mirror of
https://github.com/dborth/vbagx.git
synced 2024-11-01 16:35:11 +01:00
1713 lines
51 KiB
C++
1713 lines
51 KiB
C++
#include "../System.h"
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#include "../common/Port.h"
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#include "gbGlobals.h"
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#include "gbMemory.h"
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#include "gb.h"
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u8 gbDaysinMonth [12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
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const u8 gbDisabledRam [8] = {0x80, 0xff, 0xf0, 0x00, 0x30, 0xbf, 0xbf, 0xbf};
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extern int gbHardware;
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extern int gbGBCColorType;
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extern gbRegister PC;
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mapperMBC1 gbDataMBC1 = {
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0, // RAM enable
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1, // ROM bank
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0, // RAM bank
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0, // memory model
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0, // ROM high address
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0, // RAM address
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0 // Rom Bank 0 remapping
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};
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// MBC1 ROM write registers
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void mapperMBC1ROM(u16 address, u8 value)
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{
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int tmpAddress = 0;
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switch(address & 0x6000) {
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case 0x0000: // RAM enable register
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gbDataMBC1.mapperRAMEnable = ( ( value & 0x0a) == 0x0a ? 1 : 0);
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break;
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case 0x2000: // ROM bank select
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// value = value & 0x1f;
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if ((value == 1) && (address == 0x2100))
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gbDataMBC1.mapperRomBank0Remapping = 1;
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if((value & 0x1f) == 0)
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value += 1;
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if(value == gbDataMBC1.mapperROMBank)
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break;
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tmpAddress = value << 14;
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// check current model
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if (gbDataMBC1.mapperRomBank0Remapping == 3) {
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tmpAddress = (value & 0xf) << 14;
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tmpAddress |= (gbDataMBC1.mapperROMHighAddress & 3) << 18;
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}
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else
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if(gbDataMBC1.mapperMemoryModel == 0) {
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// model is 16/8, so we have a high address in use
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tmpAddress |= (gbDataMBC1.mapperROMHighAddress & 3) << 19;
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}
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tmpAddress &= gbRomSizeMask;
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gbDataMBC1.mapperROMBank = value;
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gbMemoryMap[0x04] = &gbRom[tmpAddress];
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gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
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gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
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gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
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break;
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case 0x4000: // RAM bank select
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if(gbDataMBC1.mapperMemoryModel == 1) {
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if (!gbRamSize)
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{
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if (gbDataMBC1.mapperRomBank0Remapping == 3)
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{
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gbDataMBC1.mapperROMHighAddress = value & 0x03;
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tmpAddress = (gbDataMBC1.mapperROMHighAddress) << 18;
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tmpAddress &= gbRomSizeMask;
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gbMemoryMap[0x00] = &gbRom[tmpAddress];
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gbMemoryMap[0x01] = &gbRom[tmpAddress + 0x1000];
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gbMemoryMap[0x02] = &gbRom[tmpAddress + 0x2000];
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gbMemoryMap[0x03] = &gbRom[tmpAddress + 0x3000];
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gbMemoryMap[0x04] = &gbRom[tmpAddress + 0x4000];
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gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x5000];
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gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x6000];
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gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x7000];
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}
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else gbDataMBC1.mapperRomBank0Remapping = 0;
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}
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// 4/32 model, RAM bank switching provided
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value = value & 0x03;
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if(value == gbDataMBC1.mapperRAMBank)
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break;
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tmpAddress = value << 13;
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tmpAddress &= gbRamSizeMask;
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if(gbRamSize) {
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gbMemoryMap[0x0a] = &gbRam[tmpAddress];
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gbMemoryMap[0x0b] = &gbRam[tmpAddress + 0x1000];
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}
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gbDataMBC1.mapperRAMBank = value;
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gbDataMBC1.mapperRAMAddress = tmpAddress;
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if (gbDataMBC1.mapperRomBank0Remapping != 3)
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gbDataMBC1.mapperROMHighAddress = 0;
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} else {
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// 16/8, set the high address
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gbDataMBC1.mapperROMHighAddress = value & 0x03;
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tmpAddress = gbDataMBC1.mapperROMBank << 14;
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tmpAddress |= (gbDataMBC1.mapperROMHighAddress) << 19;
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tmpAddress &= gbRomSizeMask;
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gbMemoryMap[0x04] = &gbRom[tmpAddress];
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gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
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gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
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gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
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if(gbRamSize) {
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gbMemoryMap[0x0a] = &gbRam[0];
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gbMemoryMap[0x0b] = &gbRam[0x1000];
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}
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gbDataMBC1.mapperRAMBank = 0;
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}
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break;
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case 0x6000: // memory model select
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gbDataMBC1.mapperMemoryModel = value & 1;
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if(gbDataMBC1.mapperMemoryModel == 1) {
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// 4/32 model, RAM bank switching provided
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value = gbDataMBC1.mapperRAMBank & 0x03;
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tmpAddress = value << 13;
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tmpAddress &= gbRamSizeMask;
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if(gbRamSize) {
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gbMemoryMap[0x0a] = &gbRam[gbDataMBC1.mapperRAMAddress];
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gbMemoryMap[0x0b] = &gbRam[gbDataMBC1.mapperRAMAddress + 0x1000];
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gbDataMBC1.mapperRomBank0Remapping = 0;
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}
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else gbDataMBC1.mapperRomBank0Remapping |=2;
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gbDataMBC1.mapperRAMBank = value;
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gbDataMBC1.mapperRAMAddress = tmpAddress;
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tmpAddress = gbDataMBC1.mapperROMBank << 14;
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tmpAddress &= gbRomSizeMask;
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gbMemoryMap[0x04] = &gbRom[tmpAddress];
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gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
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gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
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gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
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} else {
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// 16/8, set the high address
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tmpAddress = gbDataMBC1.mapperROMBank << 14;
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tmpAddress |= (gbDataMBC1.mapperROMHighAddress) << 19;
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tmpAddress &= gbRomSizeMask;
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gbMemoryMap[0x04] = &gbRom[tmpAddress];
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gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
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gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
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gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
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if(gbRamSize) {
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gbMemoryMap[0x0a] = &gbRam[0];
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gbMemoryMap[0x0b] = &gbRam[0x1000];
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}
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}
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break;
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}
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}
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// MBC1 RAM write
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void mapperMBC1RAM(u16 address, u8 value)
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{
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if(gbDataMBC1.mapperRAMEnable) {
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if(gbRamSize) {
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gbMemoryMap[address >> 12][address & 0x0fff] = value;
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systemSaveUpdateCounter = SYSTEM_SAVE_UPDATED;
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}
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}
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}
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// MBC1 read RAM
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u8 mapperMBC1ReadRAM(u16 address)
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{
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if(gbDataMBC1.mapperRAMEnable)
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return gbMemoryMap[address>>12][address & 0x0fff];
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if (!genericflashcardEnable)
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return 0xff;
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else
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if ((address & 0x1000) >= 0x1000)
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{
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// The value returned when reading RAM while it's disabled
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// is constant, exept for the GBASP hardware.
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// (actually, is the address that read is out of the ROM, the returned value if 0xff...)
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if (PC.W>=0xff80)
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return 0xff;
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else
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if ((gbHardware & 0x08) && (gbGBCColorType == 2))
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{
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if (address & 1)
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return 0xfb;
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else
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return 0x7a;
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}
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else
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return 0x0a;
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}
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else
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return gbDisabledRam[address & 7];
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}
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void memoryUpdateMapMBC1()
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{
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int tmpAddress = gbDataMBC1.mapperROMBank << 14;
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// check current model
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if (gbDataMBC1.mapperRomBank0Remapping == 3) {
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tmpAddress = (gbDataMBC1.mapperROMHighAddress & 3) << 18;
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tmpAddress &= gbRomSizeMask;
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gbMemoryMap[0x00] = &gbRom[tmpAddress];
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gbMemoryMap[0x01] = &gbRom[tmpAddress + 0x1000];
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gbMemoryMap[0x02] = &gbRom[tmpAddress + 0x2000];
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gbMemoryMap[0x03] = &gbRom[tmpAddress + 0x3000];
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tmpAddress |= (gbDataMBC1.mapperROMBank & 0xf) << 14;
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gbMemoryMap[0x04] = &gbRom[tmpAddress];
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gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
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gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
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gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
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}
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else
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{
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if(gbDataMBC1.mapperMemoryModel == 0) {
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// model is 16/8, so we have a high address in use
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tmpAddress |= (gbDataMBC1.mapperROMHighAddress & 3) << 19;
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}
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tmpAddress &= gbRomSizeMask;
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gbMemoryMap[0x04] = &gbRom[tmpAddress];
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gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
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gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
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gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
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}
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if(gbRamSize) {
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if(gbDataMBC1.mapperMemoryModel == 1) {
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gbMemoryMap[0x0a] = &gbRam[gbDataMBC1.mapperRAMAddress];
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gbMemoryMap[0x0b] = &gbRam[gbDataMBC1.mapperRAMAddress + 0x1000];
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} else {
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gbMemoryMap[0x0a] = &gbRam[0];
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gbMemoryMap[0x0b] = &gbRam[0x1000];
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}
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}
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}
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mapperMBC2 gbDataMBC2 = {
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0, // RAM enable
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1 // ROM bank
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};
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// MBC2 ROM write registers
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void mapperMBC2ROM(u16 address, u8 value)
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{
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switch(address & 0x6000) {
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case 0x0000: // RAM enable
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if(!(address & 0x0100)) {
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gbDataMBC2.mapperRAMEnable = (value & 0x0f) == 0x0a;
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}
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break;
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case 0x2000: // ROM bank select
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if(address & 0x0100) {
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value &= 0x0f;
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if(value == 0)
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value = 1;
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if(gbDataMBC2.mapperROMBank != value) {
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gbDataMBC2.mapperROMBank = value;
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int tmpAddress = value << 14;
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tmpAddress &= gbRomSizeMask;
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gbMemoryMap[0x04] = &gbRom[tmpAddress];
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gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
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gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
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gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
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}
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}
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break;
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}
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}
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// MBC2 RAM write
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void mapperMBC2RAM(u16 address, u8 value)
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{
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if(gbDataMBC2.mapperRAMEnable) {
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if(gbRamSize && address < 0xa200) {
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gbMemoryMap[address >> 12][address & 0x0fff] = value;
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systemSaveUpdateCounter = SYSTEM_SAVE_UPDATED;
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}
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}
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}
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void memoryUpdateMapMBC2()
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{
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int tmpAddress = gbDataMBC2.mapperROMBank << 14;
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tmpAddress &= gbRomSizeMask;
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gbMemoryMap[0x04] = &gbRom[tmpAddress];
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gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
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gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
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gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
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}
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mapperMBC3 gbDataMBC3 = {
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0, // RAM enable
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1, // ROM bank
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0, // RAM bank
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0, // RAM address
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0, // timer clock latch
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0, // timer clock register
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0, // timer seconds
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0, // timer minutes
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0, // timer hours
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0, // timer days
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0, // timer control
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0, // timer latched seconds
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0, // timer latched minutes
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0, // timer latched hours
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0, // timer latched days
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0, // timer latched control
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(time_t)-1 // last time
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};
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void memoryUpdateMBC3Clock()
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{
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time_t now = time(NULL);
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time_t diff = now - gbDataMBC3.mapperLastTime;
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if(diff > 0) {
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// update the clock according to the last update time
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gbDataMBC3.mapperSeconds += (int)(diff % 60);
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if(gbDataMBC3.mapperSeconds > 59) {
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gbDataMBC3.mapperSeconds -= 60;
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++gbDataMBC3.mapperMinutes;
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}
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diff /= 60;
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gbDataMBC3.mapperMinutes += (int)(diff % 60);
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if(gbDataMBC3.mapperMinutes > 59) {
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gbDataMBC3.mapperMinutes -= 60;
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++gbDataMBC3.mapperHours;
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}
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diff /= 60;
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gbDataMBC3.mapperHours += (int)(diff % 24);
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if(gbDataMBC3.mapperHours > 23) {
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gbDataMBC3.mapperHours -= 24;
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++gbDataMBC3.mapperDays;
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}
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diff /= 24;
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gbDataMBC3.mapperDays += (int)(diff & 0xffffffff);
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if(gbDataMBC3.mapperDays > 255) {
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if(gbDataMBC3.mapperDays > 511) {
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gbDataMBC3.mapperDays %= 512;
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gbDataMBC3.mapperControl |= 0x80;
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}
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gbDataMBC3.mapperControl = (gbDataMBC3.mapperControl & 0xfe) |
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(gbDataMBC3.mapperDays>255 ? 1 : 0);
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}
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}
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gbDataMBC3.mapperLastTime = now;
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}
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// MBC3 ROM write registers
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void mapperMBC3ROM(u16 address, u8 value)
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{
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int tmpAddress = 0;
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switch(address & 0x6000) {
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case 0x0000: // RAM enable register
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gbDataMBC3.mapperRAMEnable = ( ( value & 0x0a) == 0x0a ? 1 : 0);
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break;
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case 0x2000: // ROM bank select
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value = value & 0x7f;
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if(value == 0)
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value = 1;
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if(value == gbDataMBC3.mapperROMBank)
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break;
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tmpAddress = value << 14;
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tmpAddress &= gbRomSizeMask;
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gbDataMBC3.mapperROMBank = value;
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gbMemoryMap[0x04] = &gbRom[tmpAddress];
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gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
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gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
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gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
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break;
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case 0x4000: // RAM bank select
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if(value < 8) {
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if(value == gbDataMBC3.mapperRAMBank)
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break;
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tmpAddress = value << 13;
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tmpAddress &= gbRamSizeMask;
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gbMemoryMap[0x0a] = &gbRam[tmpAddress];
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gbMemoryMap[0x0b] = &gbRam[tmpAddress + 0x1000];
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gbDataMBC3.mapperRAMBank = value;
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gbDataMBC3.mapperRAMAddress = tmpAddress;
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} else {
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if(gbDataMBC3.mapperRAMEnable) {
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gbDataMBC3.mapperRAMBank = -1;
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gbDataMBC3.mapperClockRegister = value;
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}
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}
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break;
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case 0x6000: // clock latch
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if(gbDataMBC3.mapperClockLatch == 0 && value == 1) {
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memoryUpdateMBC3Clock();
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gbDataMBC3.mapperLSeconds = gbDataMBC3.mapperSeconds;
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gbDataMBC3.mapperLMinutes = gbDataMBC3.mapperMinutes;
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gbDataMBC3.mapperLHours = gbDataMBC3.mapperHours;
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gbDataMBC3.mapperLDays = gbDataMBC3.mapperDays;
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gbDataMBC3.mapperLControl = gbDataMBC3.mapperControl;
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}
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if(value == 0x00 || value == 0x01)
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gbDataMBC3.mapperClockLatch = value;
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break;
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}
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}
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// MBC3 RAM write
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void mapperMBC3RAM(u16 address, u8 value)
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{
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if(gbDataMBC3.mapperRAMEnable) {
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if(gbDataMBC3.mapperRAMBank != -1) {
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if(gbRamSize) {
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gbMemoryMap[address>>12][address & 0x0fff] = value;
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systemSaveUpdateCounter = SYSTEM_SAVE_UPDATED;
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}
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} else {
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time(&gbDataMBC3.mapperLastTime);
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switch(gbDataMBC3.mapperClockRegister) {
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case 0x08:
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gbDataMBC3.mapperSeconds = value;
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break;
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case 0x09:
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gbDataMBC3.mapperMinutes = value;
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break;
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case 0x0a:
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gbDataMBC3.mapperHours = value;
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break;
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case 0x0b:
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gbDataMBC3.mapperDays = value;
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break;
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case 0x0c:
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if(gbDataMBC3.mapperControl & 0x80)
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gbDataMBC3.mapperControl = 0x80 | value;
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else
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gbDataMBC3.mapperControl = value;
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break;
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}
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}
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}
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}
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// MBC3 read RAM
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u8 mapperMBC3ReadRAM(u16 address)
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{
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if(gbDataMBC3.mapperRAMEnable) {
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if(gbDataMBC3.mapperRAMBank != -1) {
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return gbMemoryMap[address>>12][address & 0x0fff];
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}
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switch(gbDataMBC3.mapperClockRegister) {
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case 0x08:
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return gbDataMBC3.mapperLSeconds;
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break;
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case 0x09:
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return gbDataMBC3.mapperLMinutes;
|
|
break;
|
|
case 0x0a:
|
|
return gbDataMBC3.mapperLHours;
|
|
break;
|
|
case 0x0b:
|
|
return gbDataMBC3.mapperLDays;
|
|
break;
|
|
case 0x0c:
|
|
return gbDataMBC3.mapperLControl;
|
|
}
|
|
}
|
|
|
|
if (!genericflashcardEnable)
|
|
return 0xff;
|
|
else
|
|
if ((address & 0x1000) >= 0x1000)
|
|
{
|
|
// The value returned when reading RAM while it's disabled
|
|
// is constant, exept for the GBASP hardware.
|
|
// (actually, is the address that read is out of the ROM, the returned value if 0xff...)
|
|
if (PC.W>=0xff80)
|
|
return 0xff;
|
|
else
|
|
if ((gbHardware & 0x08) && (gbGBCColorType == 2))
|
|
{
|
|
if (address & 1)
|
|
return 0xfb;
|
|
else
|
|
return 0x7a;
|
|
}
|
|
else
|
|
return 0x0a;
|
|
}
|
|
else
|
|
return gbDisabledRam[address & 7];
|
|
}
|
|
|
|
void memoryUpdateMapMBC3()
|
|
{
|
|
int tmpAddress = gbDataMBC3.mapperROMBank << 14;
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
|
|
if(gbDataMBC3.mapperRAMBank >= 0 && gbRamSize) {
|
|
tmpAddress = gbDataMBC3.mapperRAMBank << 13;
|
|
tmpAddress &= gbRamSizeMask;
|
|
gbMemoryMap[0x0a] = &gbRam[tmpAddress];
|
|
gbMemoryMap[0x0b] = &gbRam[tmpAddress + 0x1000];
|
|
}
|
|
}
|
|
|
|
mapperMBC5 gbDataMBC5 = {
|
|
0, // RAM enable
|
|
1, // ROM bank
|
|
0, // RAM bank
|
|
0, // ROM high address
|
|
0, // RAM address
|
|
0 // is rumble cartridge?
|
|
};
|
|
|
|
extern int ConfigRequested;
|
|
// MBC5 ROM write registers
|
|
void mapperMBC5ROM(u16 address, u8 value)
|
|
{
|
|
int tmpAddress = 0;
|
|
|
|
switch(address & 0x6000) {
|
|
case 0x0000: // RAM enable register
|
|
gbDataMBC5.mapperRAMEnable = ( ( value & 0x0a) == 0x0a ? 1 : 0);
|
|
break;
|
|
case 0x2000: // ROM bank select
|
|
|
|
if(address < 0x3000) {
|
|
value = value & 0xff;
|
|
if(value == gbDataMBC5.mapperROMBank)
|
|
break;
|
|
|
|
tmpAddress = (value << 14) | (gbDataMBC5.mapperROMHighAddress << 22) ;
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbDataMBC5.mapperROMBank = value;
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
|
|
} else {
|
|
value &= 1;
|
|
if(value == gbDataMBC5.mapperROMHighAddress)
|
|
break;
|
|
|
|
tmpAddress = (gbDataMBC5.mapperROMBank << 14) | (value << 22);
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbDataMBC5.mapperROMHighAddress = value;
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
}
|
|
break;
|
|
case 0x4000: // RAM bank select, plus rumble
|
|
// Some games support rumble, such as Disney Tarzan, but aren't on a
|
|
// rumble cartridge. As long as the RAM is less than or equal to 256Kbit
|
|
// we know that the last address line is not used for real RAM addresses,
|
|
// so it must be a rumble signal instead.
|
|
if(gbDataMBC5.isRumbleCartridge) {
|
|
systemCartridgeRumble(value & 0x08);
|
|
value &= 0x07;
|
|
} else if (gbRamSizeMask <= 0x7FFF) {
|
|
systemPossibleCartridgeRumble(value & 0x08);
|
|
value &= 0x07;
|
|
} else
|
|
value &= 0x0f;
|
|
if(value == gbDataMBC5.mapperRAMBank)
|
|
break;
|
|
tmpAddress = value << 13;
|
|
tmpAddress &= gbRamSizeMask;
|
|
if(gbRamSize) {
|
|
gbMemoryMap[0x0a] = &gbRam[tmpAddress];
|
|
gbMemoryMap[0x0b] = &gbRam[tmpAddress + 0x1000];
|
|
|
|
gbDataMBC5.mapperRAMBank = value;
|
|
gbDataMBC5.mapperRAMAddress = tmpAddress;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// MBC5 RAM write
|
|
void mapperMBC5RAM(u16 address, u8 value)
|
|
{
|
|
if(gbDataMBC5.mapperRAMEnable) {
|
|
if(gbRamSize) {
|
|
gbMemoryMap[address >> 12][address & 0x0fff] = value;
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_UPDATED;
|
|
}
|
|
}
|
|
}
|
|
|
|
// MBC5 read RAM
|
|
u8 mapperMBC5ReadRAM(u16 address)
|
|
{
|
|
|
|
if(gbDataMBC5.mapperRAMEnable)
|
|
return gbMemoryMap[address>>12][address & 0x0fff];
|
|
|
|
if (!genericflashcardEnable)
|
|
return 0xff;
|
|
else
|
|
if ((address & 0x1000) >= 0x1000)
|
|
{
|
|
// The value returned when reading RAM while it's disabled
|
|
// is constant, exept for the GBASP hardware.
|
|
// (actually, is the address that read is out of the ROM, the returned value if 0xff...)
|
|
if (PC.W>=0xff80)
|
|
return 0xff;
|
|
else
|
|
if ((gbHardware & 0x08) && (gbGBCColorType == 2))
|
|
{
|
|
if (address & 1)
|
|
return 0xfb;
|
|
else
|
|
return 0x7a;
|
|
}
|
|
else
|
|
return 0x0a;
|
|
}
|
|
else
|
|
return gbDisabledRam[address & 7];
|
|
}
|
|
|
|
void memoryUpdateMapMBC5()
|
|
{
|
|
int tmpAddress = (gbDataMBC5.mapperROMBank << 14) |
|
|
(gbDataMBC5.mapperROMHighAddress << 22) ;
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
|
|
if(gbRamSize) {
|
|
tmpAddress = gbDataMBC5.mapperRAMBank << 13;
|
|
tmpAddress &= gbRamSizeMask;
|
|
gbMemoryMap[0x0a] = &gbRam[tmpAddress];
|
|
gbMemoryMap[0x0b] = &gbRam[tmpAddress + 0x1000];
|
|
}
|
|
}
|
|
|
|
mapperMBC7 gbDataMBC7 = {
|
|
0, // RAM enable
|
|
1, // ROM bank
|
|
0, // RAM bank
|
|
0, // RAM address
|
|
0, // chip select
|
|
0, // ??
|
|
0, // mapper state
|
|
0, // buffer for receiving serial data
|
|
0, // idle state
|
|
0, // count of bits received
|
|
0, // command received
|
|
0, // address received
|
|
0, // write enable
|
|
0, // value to return on ram
|
|
};
|
|
|
|
// MBC7 ROM write registers
|
|
void mapperMBC7ROM(u16 address, u8 value)
|
|
{
|
|
int tmpAddress = 0;
|
|
|
|
switch(address & 0x6000) {
|
|
case 0x0000:
|
|
break;
|
|
case 0x2000: // ROM bank select
|
|
value = value & 0x7f;
|
|
if(value == 0)
|
|
value = 1;
|
|
|
|
if(value == gbDataMBC7.mapperROMBank)
|
|
break;
|
|
|
|
tmpAddress = (value << 14);
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbDataMBC7.mapperROMBank = value;
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
break;
|
|
case 0x4000: // RAM bank select/enable
|
|
if(value < 8) {
|
|
tmpAddress = (value&3) << 13;
|
|
tmpAddress &= gbRamSizeMask;
|
|
gbMemoryMap[0x0a] = &gbMemory[0xa000];
|
|
gbMemoryMap[0x0b] = &gbMemory[0xb000];
|
|
|
|
gbDataMBC7.mapperRAMBank = value;
|
|
gbDataMBC7.mapperRAMAddress = tmpAddress;
|
|
gbDataMBC7.mapperRAMEnable = 0;
|
|
} else {
|
|
gbDataMBC7.mapperRAMEnable = 0;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// MBC7 read RAM
|
|
u8 mapperMBC7ReadRAM(u16 address)
|
|
{
|
|
switch(address & 0xa0f0) {
|
|
case 0xa000:
|
|
case 0xa010:
|
|
case 0xa060:
|
|
case 0xa070:
|
|
return 0;
|
|
case 0xa020:
|
|
// sensor X low byte
|
|
return systemGetSensorX() & 255;
|
|
case 0xa030:
|
|
// sensor X high byte
|
|
return systemGetSensorX() >> 8;
|
|
case 0xa040:
|
|
// sensor Y low byte
|
|
return systemGetSensorY() & 255;
|
|
case 0xa050:
|
|
// sensor Y high byte
|
|
return systemGetSensorY() >> 8;
|
|
case 0xa080:
|
|
return gbDataMBC7.value;
|
|
}
|
|
|
|
if (!genericflashcardEnable)
|
|
return 0xff;
|
|
else
|
|
if ((address & 0x1000) >= 0x1000)
|
|
{
|
|
// The value returned when reading RAM while it's disabled
|
|
// is constant, exept for the GBASP hardware.
|
|
// (actually, is the address that read is out of the ROM, the returned value if 0xff...)
|
|
if (PC.W>=0xff80)
|
|
return 0xff;
|
|
else
|
|
if ((gbHardware & 0x08) && (gbGBCColorType == 2))
|
|
{
|
|
if (address & 1)
|
|
return 0xfb;
|
|
else
|
|
return 0x7a;
|
|
}
|
|
else
|
|
return 0x0a;
|
|
}
|
|
else
|
|
return gbDisabledRam[address & 7];
|
|
}
|
|
|
|
// MBC7 RAM write
|
|
void mapperMBC7RAM(u16 address, u8 value)
|
|
{
|
|
if(address == 0xa080) {
|
|
// special processing needed
|
|
int oldCs = gbDataMBC7.cs,oldSk=gbDataMBC7.sk;
|
|
|
|
gbDataMBC7.cs=value>>7;
|
|
gbDataMBC7.sk=(value>>6)&1;
|
|
|
|
if(!oldCs && gbDataMBC7.cs) {
|
|
if(gbDataMBC7.state==5) {
|
|
if(gbDataMBC7.writeEnable) {
|
|
gbMemory[0xa000+gbDataMBC7.address*2]=gbDataMBC7.buffer>>8;
|
|
gbMemory[0xa000+gbDataMBC7.address*2+1]=gbDataMBC7.buffer&0xff;
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_UPDATED;
|
|
}
|
|
gbDataMBC7.state=0;
|
|
gbDataMBC7.value=1;
|
|
} else {
|
|
gbDataMBC7.idle=true;
|
|
gbDataMBC7.state=0;
|
|
}
|
|
}
|
|
|
|
if(!oldSk && gbDataMBC7.sk) {
|
|
if(gbDataMBC7.idle) {
|
|
if(value & 0x02) {
|
|
gbDataMBC7.idle=false;
|
|
gbDataMBC7.count=0;
|
|
gbDataMBC7.state=1;
|
|
}
|
|
} else {
|
|
switch(gbDataMBC7.state) {
|
|
case 1:
|
|
// receiving command
|
|
gbDataMBC7.buffer <<= 1;
|
|
gbDataMBC7.buffer |= (value & 0x02)?1:0;
|
|
++gbDataMBC7.count;
|
|
if(gbDataMBC7.count==2) {
|
|
// finished receiving command
|
|
gbDataMBC7.state=2;
|
|
gbDataMBC7.count=0;
|
|
gbDataMBC7.code=gbDataMBC7.buffer & 3;
|
|
}
|
|
break;
|
|
case 2:
|
|
// receive address
|
|
gbDataMBC7.buffer <<= 1;
|
|
gbDataMBC7.buffer |= (value&0x02)?1:0;
|
|
++gbDataMBC7.count;
|
|
if(gbDataMBC7.count==8) {
|
|
// finish receiving
|
|
gbDataMBC7.state=3;
|
|
gbDataMBC7.count=0;
|
|
gbDataMBC7.address=gbDataMBC7.buffer&0xff;
|
|
if(gbDataMBC7.code==0) {
|
|
if((gbDataMBC7.address>>6)==0) {
|
|
gbDataMBC7.writeEnable=0;
|
|
gbDataMBC7.state=0;
|
|
} else if((gbDataMBC7.address>>6) == 3) {
|
|
gbDataMBC7.writeEnable=1;
|
|
gbDataMBC7.state=0;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case 3:
|
|
gbDataMBC7.buffer <<= 1;
|
|
gbDataMBC7.buffer |= (value&0x02)?1:0;
|
|
++gbDataMBC7.count;
|
|
|
|
switch(gbDataMBC7.code) {
|
|
case 0:
|
|
if(gbDataMBC7.count==16) {
|
|
if((gbDataMBC7.address>>6)==0) {
|
|
gbDataMBC7.writeEnable = 0;
|
|
gbDataMBC7.state=0;
|
|
} else if((gbDataMBC7.address>>6)==1) {
|
|
if (gbDataMBC7.writeEnable) {
|
|
for(int i=0;i<256;i++) {
|
|
gbMemory[0xa000+i*2] = gbDataMBC7.buffer >> 8;
|
|
gbMemory[0xa000+i*2+1] = gbDataMBC7.buffer & 0xff;
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_UPDATED;
|
|
}
|
|
}
|
|
gbDataMBC7.state=5;
|
|
} else if((gbDataMBC7.address>>6) == 2) {
|
|
if (gbDataMBC7.writeEnable) {
|
|
for(int i=0;i<256;i++)
|
|
WRITE16LE((u16 *)&gbMemory[0xa000+i*2], 0xffff);
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_UPDATED;
|
|
}
|
|
gbDataMBC7.state=5;
|
|
} else if((gbDataMBC7.address>>6)==3) {
|
|
gbDataMBC7.writeEnable = 1;
|
|
gbDataMBC7.state=0;
|
|
}
|
|
gbDataMBC7.count=0;
|
|
}
|
|
break;
|
|
case 1:
|
|
if(gbDataMBC7.count==16) {
|
|
gbDataMBC7.count=0;
|
|
gbDataMBC7.state=5;
|
|
gbDataMBC7.value=0;
|
|
}
|
|
break;
|
|
case 2:
|
|
if(gbDataMBC7.count==1) {
|
|
gbDataMBC7.state=4;
|
|
gbDataMBC7.count=0;
|
|
gbDataMBC7.buffer = (gbMemory[0xa000+gbDataMBC7.address*2]<<8)|
|
|
(gbMemory[0xa000+gbDataMBC7.address*2+1]);
|
|
}
|
|
break;
|
|
case 3:
|
|
if(gbDataMBC7.count==16) {
|
|
gbDataMBC7.count=0;
|
|
gbDataMBC7.state=5;
|
|
gbDataMBC7.value=0;
|
|
gbDataMBC7.buffer=0xffff;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (oldSk && !gbDataMBC7.sk) {
|
|
if (gbDataMBC7.state==4) {
|
|
gbDataMBC7.value = (gbDataMBC7.buffer & 0x8000)?1:0;
|
|
gbDataMBC7.buffer <<= 1;
|
|
gbDataMBC7.count++;
|
|
if (gbDataMBC7.count==16) {
|
|
gbDataMBC7.count=0;
|
|
gbDataMBC7.state=0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void memoryUpdateMapMBC7()
|
|
{
|
|
int tmpAddress = (gbDataMBC7.mapperROMBank << 14);
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
}
|
|
|
|
mapperHuC1 gbDataHuC1 = {
|
|
0, // RAM enable
|
|
1, // ROM bank
|
|
0, // RAM bank
|
|
0, // memory model
|
|
0, // ROM high address
|
|
0 // RAM address
|
|
};
|
|
|
|
// HuC1 ROM write registers
|
|
void mapperHuC1ROM(u16 address, u8 value)
|
|
{
|
|
int tmpAddress = 0;
|
|
|
|
switch(address & 0x6000) {
|
|
case 0x0000: // RAM enable register
|
|
gbDataHuC1.mapperRAMEnable = ( ( value & 0x0a) == 0x0a ? 1 : 0);
|
|
break;
|
|
case 0x2000: // ROM bank select
|
|
value = value & 0x3f;
|
|
if(value == 0)
|
|
value = 1;
|
|
if(value == gbDataHuC1.mapperROMBank)
|
|
break;
|
|
|
|
tmpAddress = value << 14;
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbDataHuC1.mapperROMBank = value;
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
break;
|
|
case 0x4000: // RAM bank select
|
|
if(gbDataHuC1.mapperMemoryModel == 1) {
|
|
// 4/32 model, RAM bank switching provided
|
|
value = value & 0x03;
|
|
if(value == gbDataHuC1.mapperRAMBank)
|
|
break;
|
|
tmpAddress = value << 13;
|
|
tmpAddress &= gbRamSizeMask;
|
|
gbMemoryMap[0x0a] = &gbRam[tmpAddress];
|
|
gbMemoryMap[0x0b] = &gbRam[tmpAddress + 0x1000];
|
|
gbDataHuC1.mapperRAMBank = value;
|
|
gbDataHuC1.mapperRAMAddress = tmpAddress;
|
|
} else {
|
|
// 16/8, set the high address
|
|
gbDataHuC1.mapperROMHighAddress = value & 0x03;
|
|
tmpAddress = gbDataHuC1.mapperROMBank << 14;
|
|
tmpAddress |= (gbDataHuC1.mapperROMHighAddress) << 19;
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
}
|
|
break;
|
|
case 0x6000: // memory model select
|
|
gbDataHuC1.mapperMemoryModel = value & 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// HuC1 RAM write
|
|
void mapperHuC1RAM(u16 address, u8 value)
|
|
{
|
|
if(gbDataHuC1.mapperRAMEnable) {
|
|
if(gbRamSize) {
|
|
gbMemoryMap[address >> 12][address & 0x0fff] = value;
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_UPDATED;
|
|
}
|
|
}
|
|
}
|
|
|
|
void memoryUpdateMapHuC1()
|
|
{
|
|
int tmpAddress = gbDataHuC1.mapperROMBank << 14;
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
|
|
if(gbRamSize) {
|
|
tmpAddress = gbDataHuC1.mapperRAMBank << 13;
|
|
tmpAddress &= gbRamSizeMask;
|
|
gbMemoryMap[0x0a] = &gbRam[tmpAddress];
|
|
gbMemoryMap[0x0b] = &gbRam[tmpAddress + 0x1000];
|
|
}
|
|
}
|
|
|
|
mapperHuC3 gbDataHuC3 = {
|
|
0, // RAM enable
|
|
1, // ROM bank
|
|
0, // RAM bank
|
|
0, // RAM address
|
|
0, // RAM flag
|
|
0 // RAM read value
|
|
};
|
|
|
|
|
|
// HuC3 ROM write registers
|
|
void mapperHuC3ROM(u16 address, u8 value)
|
|
{
|
|
int tmpAddress = 0;
|
|
|
|
switch(address & 0x6000) {
|
|
case 0x0000: // RAM enable register
|
|
gbDataHuC3.mapperRAMEnable = ( value == 0x0a ? 1 : 0);
|
|
gbDataHuC3.mapperRAMFlag = value;
|
|
if(gbDataHuC3.mapperRAMFlag != 0x0a)
|
|
gbDataHuC3.mapperRAMBank = -1;
|
|
break;
|
|
case 0x2000: // ROM bank select
|
|
value = value & 0x7f;
|
|
if(value == 0)
|
|
value = 1;
|
|
if(value == gbDataHuC3.mapperROMBank)
|
|
break;
|
|
|
|
tmpAddress = value << 14;
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbDataHuC3.mapperROMBank = value;
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
break;
|
|
case 0x4000: // RAM bank select
|
|
value = value & 0x03;
|
|
if(value == gbDataHuC3.mapperRAMBank)
|
|
break;
|
|
tmpAddress = value << 13;
|
|
tmpAddress &= gbRamSizeMask;
|
|
gbMemoryMap[0x0a] = &gbRam[tmpAddress];
|
|
gbMemoryMap[0x0b] = &gbRam[tmpAddress + 0x1000];
|
|
gbDataHuC3.mapperRAMBank = value;
|
|
gbDataHuC3.mapperRAMAddress = tmpAddress;
|
|
break;
|
|
case 0x6000: // nothing to do!
|
|
break;
|
|
}
|
|
}
|
|
|
|
// HuC3 read RAM
|
|
u8 mapperHuC3ReadRAM(u16 address)
|
|
{
|
|
if(gbDataHuC3.mapperRAMFlag > 0x0b &&
|
|
gbDataHuC3.mapperRAMFlag < 0x0e) {
|
|
if(gbDataHuC3.mapperRAMFlag != 0x0c)
|
|
return 1;
|
|
return gbDataHuC3.mapperRAMValue;
|
|
} else
|
|
return gbMemoryMap[address >> 12][address & 0x0fff];
|
|
}
|
|
|
|
// HuC3 RAM write
|
|
void mapperHuC3RAM(u16 address, u8 value)
|
|
{
|
|
int *p;
|
|
|
|
if(gbDataHuC3.mapperRAMFlag < 0x0b ||
|
|
gbDataHuC3.mapperRAMFlag > 0x0e) {
|
|
if(gbDataHuC3.mapperRAMEnable) {
|
|
if(gbRamSize) {
|
|
gbMemoryMap[address >> 12][address & 0x0fff] = value;
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_UPDATED;
|
|
}
|
|
}
|
|
} else {
|
|
if(gbDataHuC3.mapperRAMFlag == 0x0b) {
|
|
if(value == 0x62) {
|
|
gbDataHuC3.mapperRAMValue = 1;
|
|
} else {
|
|
switch(value & 0xf0) {
|
|
case 0x10:
|
|
p = &gbDataHuC3.mapperRegister2;
|
|
gbDataHuC3.mapperRAMValue = *(p+gbDataHuC3.mapperRegister1++);
|
|
if(gbDataHuC3.mapperRegister1 > 6)
|
|
gbDataHuC3.mapperRegister1 = 0;
|
|
break;
|
|
case 0x30:
|
|
p = &gbDataHuC3.mapperRegister2;
|
|
*(p+gbDataHuC3.mapperRegister1++) = value & 0x0f;
|
|
if(gbDataHuC3.mapperRegister1 > 6)
|
|
gbDataHuC3.mapperRegister1 = 0;
|
|
gbDataHuC3.mapperAddress =
|
|
(gbDataHuC3.mapperRegister6 << 24) |
|
|
(gbDataHuC3.mapperRegister5 << 16) |
|
|
(gbDataHuC3.mapperRegister4 << 8) |
|
|
(gbDataHuC3.mapperRegister3 << 4) |
|
|
(gbDataHuC3.mapperRegister2);
|
|
break;
|
|
case 0x40:
|
|
gbDataHuC3.mapperRegister1 = (gbDataHuC3.mapperRegister1 & 0xf0) |
|
|
(value & 0x0f);
|
|
gbDataHuC3.mapperRegister2 = (gbDataHuC3.mapperAddress & 0x0f);
|
|
gbDataHuC3.mapperRegister3 = ((gbDataHuC3.mapperAddress>>4)&0x0f);
|
|
gbDataHuC3.mapperRegister4 = ((gbDataHuC3.mapperAddress>>8)&0x0f);
|
|
gbDataHuC3.mapperRegister5 = ((gbDataHuC3.mapperAddress>>16)&0x0f);
|
|
gbDataHuC3.mapperRegister6 = ((gbDataHuC3.mapperAddress>>24)&0x0f);
|
|
gbDataHuC3.mapperRegister7 = 0;
|
|
gbDataHuC3.mapperRegister8 = 0;
|
|
gbDataHuC3.mapperRAMValue = 0;
|
|
break;
|
|
case 0x50:
|
|
gbDataHuC3.mapperRegister1 = (gbDataHuC3.mapperRegister1 & 0x0f) |
|
|
((value << 4)&0x0f);
|
|
break;
|
|
default:
|
|
gbDataHuC3.mapperRAMValue = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void memoryUpdateMapHuC3()
|
|
{
|
|
int tmpAddress = gbDataHuC3.mapperROMBank << 14;
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
|
|
if(gbRamSize) {
|
|
tmpAddress = gbDataHuC3.mapperRAMBank << 13;
|
|
tmpAddress &= gbRamSizeMask;
|
|
gbMemoryMap[0x0a] = &gbRam[tmpAddress];
|
|
gbMemoryMap[0x0b] = &gbRam[tmpAddress + 0x1000];
|
|
}
|
|
}
|
|
|
|
// TAMA5 (for Tamagotchi 3 (gb)).
|
|
// Very basic (and ugly :p) support, only rom bank switching is actually working...
|
|
mapperTAMA5 gbDataTAMA5 = {
|
|
1, // RAM enable
|
|
1, // ROM bank
|
|
0, // RAM bank
|
|
0, // RAM address
|
|
0, // RAM Byte select
|
|
0, // mapper command number
|
|
0, // mapper last command;
|
|
{
|
|
0, // commands 0x0
|
|
0, // commands 0x1
|
|
0, // commands 0x2
|
|
0, // commands 0x3
|
|
0, // commands 0x4
|
|
0, // commands 0x5
|
|
0, // commands 0x6
|
|
0, // commands 0x7
|
|
0, // commands 0x8
|
|
0, // commands 0x9
|
|
0, // commands 0xa
|
|
0, // commands 0xb
|
|
0, // commands 0xc
|
|
0, // commands 0xd
|
|
0, // commands 0xe
|
|
0 // commands 0xf
|
|
},
|
|
0, // register
|
|
0, // timer clock latch
|
|
0, // timer clock register
|
|
0, // timer seconds
|
|
0, // timer minutes
|
|
0, // timer hours
|
|
0, // timer days
|
|
0, // timer months
|
|
0, // timer years
|
|
0, // timer control
|
|
0, // timer latched seconds
|
|
0, // timer latched minutes
|
|
0, // timer latched hours
|
|
0, // timer latched days
|
|
0, // timer latched months
|
|
0, // timer latched years
|
|
0, // timer latched control
|
|
(time_t)-1 // last time
|
|
};
|
|
|
|
|
|
void memoryUpdateTAMA5Clock()
|
|
{
|
|
if ((gbDataTAMA5.mapperYears & 3) == 0)
|
|
gbDaysinMonth[1] = 29;
|
|
else
|
|
gbDaysinMonth[1] = 28;
|
|
|
|
time_t now = time(NULL);
|
|
time_t diff = now - gbDataTAMA5.mapperLastTime;
|
|
if(diff > 0) {
|
|
// update the clock according to the last update time
|
|
gbDataTAMA5.mapperSeconds += (int)(diff % 60);
|
|
if(gbDataTAMA5.mapperSeconds > 59) {
|
|
gbDataTAMA5.mapperSeconds -= 60;
|
|
++gbDataTAMA5.mapperMinutes;
|
|
}
|
|
|
|
diff /= 60;
|
|
|
|
gbDataTAMA5.mapperMinutes += (int)(diff % 60);
|
|
if(gbDataTAMA5.mapperMinutes > 59) {
|
|
gbDataTAMA5.mapperMinutes -= 60;
|
|
++gbDataTAMA5.mapperHours;
|
|
}
|
|
|
|
diff /= 60;
|
|
|
|
gbDataTAMA5.mapperHours += (int)(diff % 24);
|
|
diff /= 24;
|
|
if(gbDataTAMA5.mapperHours > 23) {
|
|
gbDataTAMA5.mapperHours -= 24;
|
|
++diff;
|
|
|
|
}
|
|
|
|
time_t days = diff;
|
|
while (days)
|
|
{
|
|
++gbDataTAMA5.mapperDays;
|
|
--days;
|
|
if (gbDataTAMA5.mapperDays>gbDaysinMonth[gbDataTAMA5.mapperMonths-1])
|
|
{
|
|
gbDataTAMA5.mapperDays = 1;
|
|
++gbDataTAMA5.mapperMonths;
|
|
if (gbDataTAMA5.mapperMonths>12)
|
|
{
|
|
gbDataTAMA5.mapperMonths = 1;
|
|
++gbDataTAMA5.mapperYears;
|
|
if ((gbDataTAMA5.mapperYears & 3) == 0)
|
|
gbDaysinMonth[1] = 29;
|
|
else
|
|
gbDaysinMonth[1] = 28;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
gbDataTAMA5.mapperLastTime = now;
|
|
|
|
}
|
|
|
|
|
|
|
|
// TAMA5 RAM write
|
|
void mapperTAMA5RAM(u16 address, u8 value)
|
|
{
|
|
if ((address & 0xffff) <= 0xa001)
|
|
{
|
|
switch (address & 1)
|
|
{
|
|
case 0: // 'Values' Register
|
|
{
|
|
value &= 0xf;
|
|
gbDataTAMA5.mapperCommands[gbDataTAMA5.mapperCommandNumber] = value;
|
|
gbMemoryMap[0xa][0] = value;
|
|
|
|
/* int test = gbDataTAMA5.mapperCommands[gbDataTAMA5.mapperCommandNumber & 0x0e] |
|
|
(gbDataTAMA5.mapperCommands[(gbDataTAMA5.mapperCommandNumber & 0x0e) +1]<<4);*/
|
|
|
|
if ((gbDataTAMA5.mapperCommandNumber & 0xe) == 0) // Read Command !!!
|
|
{
|
|
gbDataTAMA5.mapperROMBank = gbDataTAMA5.mapperCommands[0] |
|
|
(gbDataTAMA5.mapperCommands[1]<<4);
|
|
|
|
int tmpAddress = (gbDataTAMA5.mapperROMBank << 14);
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
|
|
gbDataTAMA5.mapperCommands[0x0f] = 0;
|
|
}
|
|
else if ((gbDataTAMA5.mapperCommandNumber & 0xe) == 4)
|
|
{
|
|
gbDataTAMA5.mapperCommands[0x0f] = 1;
|
|
if (gbDataTAMA5.mapperCommandNumber == 4)
|
|
gbDataTAMA5.mapperCommands[5] =0; // correct ?
|
|
}
|
|
else if ((gbDataTAMA5.mapperCommandNumber & 0xe) == 6)
|
|
{
|
|
gbDataTAMA5.mapperRamByteSelect = (gbDataTAMA5.mapperCommands[7]<<4) |
|
|
(gbDataTAMA5.mapperCommands[6]&0x0f);
|
|
|
|
// Write Commands !!!
|
|
if (gbDataTAMA5.mapperCommands[0x0f] && (gbDataTAMA5.mapperCommandNumber == 7))
|
|
{
|
|
int data = (gbDataTAMA5.mapperCommands[0x04] & 0x0f) |
|
|
(gbDataTAMA5.mapperCommands[0x05] <<4);
|
|
|
|
// Not sure when the write command should reset...
|
|
// but it doesn't seem to matter.
|
|
// gbDataTAMA5.mapperCommands[0x0f] = 0;
|
|
|
|
if (gbDataTAMA5.mapperRamByteSelect == 0x8) // Timer stuff
|
|
{
|
|
switch (data & 0xf)
|
|
{
|
|
case 0x7:
|
|
gbDataTAMA5.mapperDays = ((gbDataTAMA5.mapperDays)/10)*10 + (data >> 4);
|
|
break;
|
|
case 0x8:
|
|
gbDataTAMA5.mapperDays = (gbDataTAMA5.mapperDays%10) + (data >>4)*10;
|
|
break;
|
|
case 0x9:
|
|
gbDataTAMA5.mapperMonths = ((gbDataTAMA5.mapperMonths)/10)*10 + (data >> 4);
|
|
break;
|
|
case 0xa:
|
|
gbDataTAMA5.mapperMonths = (gbDataTAMA5.mapperMonths%10) + (data >>4)*10;
|
|
break;
|
|
case 0xb:
|
|
gbDataTAMA5.mapperYears = ((gbDataTAMA5.mapperYears)%1000) + (data >> 4)*1000;
|
|
break;
|
|
case 0xc:
|
|
gbDataTAMA5.mapperYears = (gbDataTAMA5.mapperYears%100) + (gbDataTAMA5.mapperYears/1000)*1000 +
|
|
(data >>4)*100;
|
|
break;
|
|
default :
|
|
break;
|
|
}
|
|
}
|
|
else if (gbDataTAMA5.mapperRamByteSelect == 0x18) // Timer stuff again
|
|
{
|
|
memoryUpdateTAMA5Clock();
|
|
gbDataTAMA5.mapperLSeconds = gbDataTAMA5.mapperSeconds;
|
|
gbDataTAMA5.mapperLMinutes = gbDataTAMA5.mapperMinutes;
|
|
gbDataTAMA5.mapperLHours = gbDataTAMA5.mapperHours;
|
|
gbDataTAMA5.mapperLDays = gbDataTAMA5.mapperDays;
|
|
gbDataTAMA5.mapperLMonths = gbDataTAMA5.mapperMonths;
|
|
gbDataTAMA5.mapperLYears = gbDataTAMA5.mapperYears;
|
|
gbDataTAMA5.mapperLControl = gbDataTAMA5.mapperControl;
|
|
|
|
int seconds = ((gbDataTAMA5.mapperLSeconds / 10)<<4) + gbDataTAMA5.mapperLSeconds %10;
|
|
int secondsL = (gbDataTAMA5.mapperLSeconds % 10);
|
|
int secondsH = (gbDataTAMA5.mapperLSeconds / 10);
|
|
int minutes = ((gbDataTAMA5.mapperLMinutes / 10)<<4) + gbDataTAMA5.mapperLMinutes %10;
|
|
int hours = ((gbDataTAMA5.mapperLHours / 10)<<4) + gbDataTAMA5.mapperLHours %10;
|
|
int DaysL = gbDataTAMA5.mapperLDays % 10;
|
|
int DaysH = gbDataTAMA5.mapperLDays /10;
|
|
int MonthsL = gbDataTAMA5.mapperLMonths % 10;
|
|
int MonthsH = gbDataTAMA5.mapperLMonths / 10;
|
|
int Years3 = (gbDataTAMA5.mapperLYears / 100) % 10;
|
|
int Years4 = (gbDataTAMA5.mapperLYears / 1000);
|
|
|
|
switch (data & 0x0f)
|
|
{
|
|
// I guess cases 0 and 1 are used for secondsL and secondsH
|
|
// so the game would update the timer values on screen when
|
|
// the seconds reset to 0... ?
|
|
case 0x0:
|
|
gbTAMA5ram[gbDataTAMA5.mapperRamByteSelect] = secondsL;
|
|
break;
|
|
case 0x1:
|
|
gbTAMA5ram[gbDataTAMA5.mapperRamByteSelect] = secondsH;
|
|
break;
|
|
case 0x7:
|
|
gbTAMA5ram[gbDataTAMA5.mapperRamByteSelect] = DaysL; // days low
|
|
break;
|
|
case 0x8:
|
|
gbTAMA5ram[gbDataTAMA5.mapperRamByteSelect] = DaysH; // days high
|
|
break;
|
|
case 0x9:
|
|
gbTAMA5ram[gbDataTAMA5.mapperRamByteSelect] = MonthsL; // month low
|
|
break;
|
|
case 0xa:
|
|
gbTAMA5ram[gbDataTAMA5.mapperRamByteSelect] = MonthsH; // month high
|
|
break;
|
|
case 0xb:
|
|
gbTAMA5ram[gbDataTAMA5.mapperRamByteSelect] = Years4; // years 4th digit
|
|
break;
|
|
case 0xc:
|
|
gbTAMA5ram[gbDataTAMA5.mapperRamByteSelect] = Years3; // years 3rd digit
|
|
break;
|
|
default :
|
|
break;
|
|
}
|
|
|
|
gbTAMA5ram[0x54] = seconds; // incorrect ? (not used by the game) ?
|
|
gbTAMA5ram[0x64] = minutes;
|
|
gbTAMA5ram[0x74] = hours;
|
|
gbTAMA5ram[0x84] = DaysH*16+DaysL; // incorrect ? (not used by the game) ?
|
|
gbTAMA5ram[0x94] = MonthsH*16+MonthsL; // incorrect ? (not used by the game) ?
|
|
|
|
time(&gbDataTAMA5.mapperLastTime);
|
|
|
|
gbMemoryMap[0xa][0] = 1;
|
|
}
|
|
else if (gbDataTAMA5.mapperRamByteSelect == 0x28) // Timer stuff again
|
|
{
|
|
if ((data & 0xf) == 0xb)
|
|
gbDataTAMA5.mapperYears = ((gbDataTAMA5.mapperYears>>2)<<2) + (data & 3);
|
|
}
|
|
else if (gbDataTAMA5.mapperRamByteSelect == 0x44)
|
|
{
|
|
gbDataTAMA5.mapperMinutes = (data>>4)*10 + (data & 15);
|
|
}
|
|
else if (gbDataTAMA5.mapperRamByteSelect == 0x54)
|
|
{
|
|
gbDataTAMA5.mapperHours = (data>>4)*10 + (data & 15);
|
|
}
|
|
else
|
|
{
|
|
gbTAMA5ram[gbDataTAMA5.mapperRamByteSelect] = data;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case 1: // 'Commands' Register
|
|
{
|
|
gbMemoryMap[0xa][1] = gbDataTAMA5.mapperCommandNumber = value;
|
|
|
|
// This should be only a 'is the flashrom ready ?' command.
|
|
// However as I couldn't find any 'copy' command
|
|
// (that seems to be needed for the saving system to work)
|
|
// I put it there...
|
|
if (value == 0x0a)
|
|
{
|
|
for (int i = 0; i<0x10; i++){
|
|
int i16 = i<<4;
|
|
for (int j = 0; j<0x10; j+=4){
|
|
gbTAMA5ram[(i16 + j ) | 2] = gbTAMA5ram[i16 + j ];
|
|
gbTAMA5ram[(i16 + j + 1) | 2] = gbTAMA5ram[i16 + j + 1];
|
|
}
|
|
}
|
|
gbMemoryMap[0xa][0] = gbDataTAMA5.mapperRAMEnable = 1;
|
|
}
|
|
else
|
|
{
|
|
if ((value & 0x0e) == 0x0c)
|
|
{
|
|
gbDataTAMA5.mapperRamByteSelect = gbDataTAMA5.mapperCommands[6] |
|
|
(gbDataTAMA5.mapperCommands[7]<<4);
|
|
|
|
u8 byte = gbTAMA5ram[gbDataTAMA5.mapperRamByteSelect];
|
|
|
|
gbMemoryMap[0xa][0] = (value & 1) ? byte >> 4 : byte & 0x0f;
|
|
|
|
gbDataTAMA5.mapperCommands[0x0f] = 0;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(gbDataTAMA5.mapperRAMEnable) {
|
|
if(gbDataTAMA5.mapperRAMBank != -1) {
|
|
if(gbRamSize) {
|
|
gbMemoryMap[address>>12][address & 0x0fff] = value;
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_UPDATED;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// TAMA5 read RAM
|
|
u8 mapperTAMA5ReadRAM(u16 address)
|
|
{
|
|
return gbMemoryMap[address>>12][address & 0xfff];
|
|
}
|
|
|
|
|
|
void memoryUpdateMapTAMA5()
|
|
{
|
|
int tmpAddress = (gbDataTAMA5.mapperROMBank << 14);
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
|
|
if(gbRamSize) {
|
|
tmpAddress = 0 << 13;
|
|
tmpAddress &= gbRamSizeMask;
|
|
gbMemoryMap[0x0a] = &gbRam[tmpAddress];
|
|
gbMemoryMap[0x0b] = &gbRam[tmpAddress + 0x1000];
|
|
}
|
|
}
|
|
|
|
// MMM01 Used in Momotarou collection (however the rom is corrupted)
|
|
mapperMMM01 gbDataMMM01 ={
|
|
0, // RAM enable
|
|
1, // ROM bank
|
|
0, // RAM bank
|
|
0, // memory model
|
|
0, // ROM high address
|
|
0, // RAM address
|
|
0 // Rom Bank 0 remapping
|
|
};
|
|
|
|
// MMM01 ROM write registers
|
|
void mapperMMM01ROM(u16 address, u8 value)
|
|
{
|
|
int tmpAddress = 0;
|
|
|
|
switch(address & 0x6000) {
|
|
case 0x0000: // RAM enable register
|
|
gbDataMMM01.mapperRAMEnable = ( ( value & 0x0a) == 0x0a ? 1 : 0);
|
|
break;
|
|
case 0x2000: // ROM bank select
|
|
// value = value & 0x1f;
|
|
if(value == 0)
|
|
value = 1;
|
|
if(value == gbDataMMM01.mapperROMBank)
|
|
break;
|
|
|
|
tmpAddress = value << 14;
|
|
|
|
// check current model
|
|
if(gbDataMMM01.mapperMemoryModel == 0) {
|
|
// model is 16/8, so we have a high address in use
|
|
tmpAddress |= (gbDataMMM01.mapperROMHighAddress) << 19;
|
|
}
|
|
else
|
|
tmpAddress |= gbDataMMM01.mapperRomBank0Remapping << 18;
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbDataMMM01.mapperROMBank = value;
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
break;
|
|
case 0x4000: // RAM bank select
|
|
if(gbDataMMM01.mapperMemoryModel == 1) {
|
|
// 4/32 model, RAM bank switching provided
|
|
value = value & 0x03;
|
|
if(value == gbDataMBC1.mapperRAMBank)
|
|
break;
|
|
tmpAddress = value << 13;
|
|
tmpAddress &= gbRamSizeMask;
|
|
gbMemoryMap[0x0a] = &gbRam[tmpAddress];
|
|
gbMemoryMap[0x0b] = &gbRam[tmpAddress + 0x1000];
|
|
gbDataMMM01.mapperRAMBank = value;
|
|
gbDataMMM01.mapperRAMAddress = tmpAddress;
|
|
} else {
|
|
// 16/8, set the high address
|
|
gbDataMMM01.mapperROMHighAddress = value & 0x03;
|
|
tmpAddress = gbDataMMM01.mapperROMBank << 14;
|
|
tmpAddress |= (gbDataMMM01.mapperROMHighAddress) << 19;
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
|
|
gbDataMMM01.mapperRomBank0Remapping = ((value<<1) | (value & 0x40 ? 1 : 0)) & 0xff;
|
|
tmpAddress = gbDataMMM01.mapperRomBank0Remapping << 18;
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbMemoryMap[0x00] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x01] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x02] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x03] = &gbRom[tmpAddress + 0x3000];
|
|
}
|
|
break;
|
|
case 0x6000: // memory model select
|
|
gbDataMMM01.mapperMemoryModel = value & 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// MMM01 RAM write
|
|
void mapperMMM01RAM(u16 address, u8 value)
|
|
{
|
|
if(gbDataMMM01.mapperRAMEnable) {
|
|
if(gbRamSize) {
|
|
gbMemoryMap[address >> 12][address & 0x0fff] = value;
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_UPDATED;
|
|
}
|
|
}
|
|
}
|
|
|
|
void memoryUpdateMapMMM01()
|
|
{
|
|
int tmpAddress = gbDataMMM01.mapperROMBank << 14;
|
|
|
|
// check current model
|
|
if(gbDataMMM01.mapperMemoryModel == 1) {
|
|
// model is 16/8, so we have a high address in use
|
|
tmpAddress |= (gbDataMMM01.mapperROMHighAddress) << 19;
|
|
}
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x06] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x07] = &gbRom[tmpAddress + 0x3000];
|
|
|
|
tmpAddress = gbDataMMM01.mapperRomBank0Remapping << 18;
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbMemoryMap[0x00] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x01] = &gbRom[tmpAddress + 0x1000];
|
|
gbMemoryMap[0x02] = &gbRom[tmpAddress + 0x2000];
|
|
gbMemoryMap[0x03] = &gbRom[tmpAddress + 0x3000];
|
|
|
|
if(gbRamSize) {
|
|
gbMemoryMap[0x0a] = &gbRam[gbDataMMM01.mapperRAMAddress];
|
|
gbMemoryMap[0x0b] = &gbRam[gbDataMMM01.mapperRAMAddress + 0x1000];
|
|
}
|
|
}
|
|
|
|
// GameGenie ROM write registers
|
|
void mapperGGROM(u16 address, u8 value)
|
|
{
|
|
switch(address & 0x6000) {
|
|
case 0x0000: // RAM enable register
|
|
break;
|
|
case 0x2000: // GameGenie has only a half bank
|
|
break;
|
|
case 0x4000: // GameGenie has no RAM
|
|
if ((address >=0x4001) && (address <= 0x4020)) // GG Hardware Registers
|
|
gbMemoryMap[address >> 12][address & 0x0fff] = value;
|
|
break;
|
|
case 0x6000: // GameGenie has only a half bank
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
// GS3 Used to emulate the GS V3.0 rom bank switching
|
|
mapperGS3 gbDataGS3 = { 1 }; // ROM bank
|
|
|
|
void mapperGS3ROM(u16 address, u8 value)
|
|
{
|
|
int tmpAddress = 0;
|
|
|
|
switch(address & 0x6000) {
|
|
case 0x0000: // GS has no ram
|
|
break;
|
|
case 0x2000: // GS has no 'classic' ROM bank select
|
|
break;
|
|
case 0x4000: // GS has no ram
|
|
break;
|
|
case 0x6000: // 0x6000 area is RW, and used for GS hardware registers
|
|
|
|
if (address == 0x7FE1) // This is the (half) ROM bank select register
|
|
{
|
|
if(value == gbDataGS3.mapperROMBank)
|
|
break;
|
|
tmpAddress = value << 13;
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
gbDataGS3.mapperROMBank = value;
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
}
|
|
else
|
|
gbMemoryMap[address>>12][address & 0x0fff] = value;
|
|
break;
|
|
}
|
|
}
|
|
|
|
void memoryUpdateMapGS3()
|
|
{
|
|
int tmpAddress = gbDataGS3.mapperROMBank << 13;
|
|
|
|
tmpAddress &= gbRomSizeMask;
|
|
// GS can only change a half ROM bank
|
|
gbMemoryMap[0x04] = &gbRom[tmpAddress];
|
|
gbMemoryMap[0x05] = &gbRom[tmpAddress + 0x1000];
|
|
}
|