mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-12-27 03:31:50 +01:00
137 lines
3.8 KiB
C++
137 lines
3.8 KiB
C++
/*****
|
|
* SPC7110 emulator - version 0.03 (2008-08-10)
|
|
* Copyright (c) 2008, byuu and neviksti
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* The software is provided "as is" and the author disclaims all warranties
|
|
* with regard to this software including all implied warranties of
|
|
* merchantibility and fitness, in no event shall the author be liable for
|
|
* any special, direct, indirect, or consequential damages or any damages
|
|
* whatsoever resulting from loss of use, data or profits, whether in an
|
|
* action of contract, negligence or other tortious action, arising out of
|
|
* or in connection with the use or performance of this software.
|
|
*****/
|
|
|
|
|
|
#ifndef _SPC7110EMU_H_
|
|
#define _SPC7110EMU_H_
|
|
|
|
#include "spc7110dec.h"
|
|
|
|
class SPC7110 {
|
|
public:
|
|
void init();
|
|
void enable();
|
|
void power();
|
|
void reset();
|
|
|
|
unsigned datarom_addr(unsigned addr);
|
|
|
|
unsigned data_pointer();
|
|
unsigned data_adjust();
|
|
unsigned data_increment();
|
|
void set_data_pointer(unsigned addr);
|
|
void set_data_adjust(unsigned addr);
|
|
|
|
void update_time(int offset = 0);
|
|
time_t create_time();
|
|
|
|
uint8 mmio_read (unsigned addr);
|
|
void mmio_write(unsigned addr, uint8 data);
|
|
|
|
uint8 read (unsigned addr);
|
|
void write(unsigned addr, uint8 data);
|
|
|
|
//spc7110decomp
|
|
void decomp_init();
|
|
uint8 decomp_read();
|
|
|
|
SPC7110();
|
|
|
|
//==================
|
|
//decompression unit
|
|
//==================
|
|
uint8 r4801; //compression table low
|
|
uint8 r4802; //compression table high
|
|
uint8 r4803; //compression table bank
|
|
uint8 r4804; //compression table index
|
|
uint8 r4805; //decompression buffer index low
|
|
uint8 r4806; //decompression buffer index high
|
|
uint8 r4807; //???
|
|
uint8 r4808; //???
|
|
uint8 r4809; //compression length low
|
|
uint8 r480a; //compression length high
|
|
uint8 r480b; //decompression control register
|
|
uint8 r480c; //decompression status
|
|
|
|
SPC7110Decomp decomp;
|
|
|
|
//==============
|
|
//data port unit
|
|
//==============
|
|
uint8 r4811; //data pointer low
|
|
uint8 r4812; //data pointer high
|
|
uint8 r4813; //data pointer bank
|
|
uint8 r4814; //data adjust low
|
|
uint8 r4815; //data adjust high
|
|
uint8 r4816; //data increment low
|
|
uint8 r4817; //data increment high
|
|
uint8 r4818; //data port control register
|
|
|
|
uint8 r481x;
|
|
|
|
bool r4814_latch;
|
|
bool r4815_latch;
|
|
|
|
//=========
|
|
//math unit
|
|
//=========
|
|
uint8 r4820; //16-bit multiplicand B0, 32-bit dividend B0
|
|
uint8 r4821; //16-bit multiplicand B1, 32-bit dividend B1
|
|
uint8 r4822; //32-bit dividend B2
|
|
uint8 r4823; //32-bit dividend B3
|
|
uint8 r4824; //16-bit multiplier B0
|
|
uint8 r4825; //16-bit multiplier B1
|
|
uint8 r4826; //16-bit divisor B0
|
|
uint8 r4827; //16-bit divisor B1
|
|
uint8 r4828; //32-bit product B0, 32-bit quotient B0
|
|
uint8 r4829; //32-bit product B1, 32-bit quotient B1
|
|
uint8 r482a; //32-bit product B2, 32-bit quotient B2
|
|
uint8 r482b; //32-bit product B3, 32-bit quotient B3
|
|
uint8 r482c; //16-bit remainder B0
|
|
uint8 r482d; //16-bit remainder B1
|
|
uint8 r482e; //math control register
|
|
uint8 r482f; //math status
|
|
|
|
//===================
|
|
//memory mapping unit
|
|
//===================
|
|
uint8 r4830; //SRAM write enable
|
|
uint8 r4831; //$[d0-df]:[0000-ffff] mapping
|
|
uint8 r4832; //$[e0-ef]:[0000-ffff] mapping
|
|
uint8 r4833; //$[f0-ff]:[0000-ffff] mapping
|
|
uint8 r4834; //???
|
|
|
|
unsigned dx_offset;
|
|
unsigned ex_offset;
|
|
unsigned fx_offset;
|
|
|
|
//====================
|
|
//real-time clock unit
|
|
//====================
|
|
uint8 r4840; //RTC latch
|
|
uint8 r4841; //RTC index/data port
|
|
uint8 r4842; //RTC status
|
|
|
|
enum RTC_State { RTCS_Inactive, RTCS_ModeSelect, RTCS_IndexSelect, RTCS_Write } rtc_state;
|
|
enum RTC_Mode { RTCM_Linear = 0x03, RTCM_Indexed = 0x0c } rtc_mode;
|
|
unsigned rtc_index;
|
|
|
|
static const unsigned months[12];
|
|
};
|
|
|
|
#endif
|