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Update PCE.ino

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32KB ROM size detection added :
- "Games Express CD Card (Japan)" is now dumped fine
- helps to see if another card is badly inserted/recognized
This commit is contained in:
PsyK0p4T 2023-01-11 00:16:46 +01:00 committed by GitHub
parent 1d57169447
commit 3725c017f7
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 29 additions and 17 deletions
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46
Cart_Reader/PCE.ino
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@ -18,7 +18,6 @@
#define HUCARD 0
#define TURBOCHIP 1
#define HUCARD_NOSWAP 2
#define DETECTION_SIZE 64
#define CHKSUM_SKIP 0
#define CHKSUM_OK 1
@ -43,7 +42,6 @@ void read_rom_PCE(void);
Variables
*****************************************/
uint8_t pce_internal_mode; //0 - HuCARD, 1 - TurboChip
uint16_t pce_force_rom_size = 0;
uint8_t tennokoe_bank_index = 0;
@ -311,14 +309,15 @@ void write_byte_PCE(uint32_t address, uint8_t data) {
PORTH |= (1 << 5);
}
//Confirm the size of ROM - 128Kb, 256Kb, 384Kb, 512Kb, 768Kb or 1024Kb
//Confirm the size of ROM
uint32_t detect_rom_size_PCE(void) {
uint32_t rom_size;
uint8_t read_byte;
uint8_t current_byte;
uint8_t detect_128, detect_256, detect_512, detect_768;
uint8_t detect_32, detect_128, detect_256, detect_512, detect_768;
//Initialize variables
detect_32 = 0;
detect_128 = 0;
detect_256 = 0;
detect_512 = 0;
@ -327,16 +326,23 @@ uint32_t detect_rom_size_PCE(void) {
//Set pins to read PC Engine cart
pin_read_write_PCE();
//Confirm where mirror address start from(128KB, 256KB, 512KB, 768, or 1024KB)
//Confirm where mirror address start from (32KB, 128KB, 256KB, 512KB, 768KB, or 1024KB)
for (current_byte = 0; current_byte < DETECTION_SIZE; current_byte++) {
if ((current_byte != detect_128) && (current_byte != detect_256) && (current_byte != detect_512) && (current_byte != detect_768)) {
if ((current_byte != detect_32) && (current_byte != detect_128) && (current_byte != detect_256) && (current_byte != detect_512) && (current_byte != detect_768)) {
//If none matched, it is 1024KB
break;
}
//read byte for 128KB, 256KB, 512KB detection
//read byte for 32KB, 128KB, 256KB, 512KB detection
read_byte = read_byte_PCE(current_byte);
//32KB detection
if (current_byte == detect_32) {
if (read_byte_PCE(current_byte + 32UL * 1024UL) == read_byte) {
detect_32++;
}
}
//128KB detection
if (current_byte == detect_128) {
if (read_byte_PCE(current_byte + 128UL * 1024UL) == read_byte) {
@ -368,25 +374,33 @@ uint32_t detect_rom_size_PCE(void) {
}
//debug
//sprintf(fileName, "%d %d %d %d", detect_128, detect_256, detect_512, detect_768); //using filename global variable as string. Initialzed in below anyways.
//sprintf(fileName, "%d %d %d %d %d", detect_32, detect_128, detect_256, detect_512, detect_768); //using filename global variable as string. Initialzed in below anyways.
//println_Msg(fileName);
//ROM size detection by result
if (detect_128 == DETECTION_SIZE) {
if (detect_32 == DETECTION_SIZE) {
rom_size = 32;
}
else if (detect_128 == DETECTION_SIZE) {
rom_size = 128;
} else if (detect_256 == DETECTION_SIZE) {
}
else if (detect_256 == DETECTION_SIZE) {
if (detect_512 == DETECTION_SIZE) {
rom_size = 256;
} else {
}
else {
//rom_size = 1024;
//Another confirmation for 384KB because 384KB hucard has data in 0x0--0x40000 and 0x80000--0xA0000(0x40000 is mirror of 0x00000)
rom_size = 384;
}
} else if (detect_512 == DETECTION_SIZE) {
}
else if (detect_512 == DETECTION_SIZE) {
rom_size = 512;
} else if (detect_768 == DETECTION_SIZE) {
}
else if (detect_768 == DETECTION_SIZE) {
rom_size = 768;
} else {
}
else {
rom_size = 1024;
}
@ -473,9 +487,7 @@ void crc_search(char *file_p, char *folder_p, uint32_t rom_size __attribute__((u
print_Msg(folder_p);
print_Msg(F("/"));
print_Msg(gamename);
//print_Msg(F(".pce"));
flag = CHKSUM_OK;
//strcat(gamename, ".pce");
rom.rename(gamename);
break;
}
@ -867,4 +879,4 @@ void pceMenu() {
//******************************************
// End of File
//******************************************
//******************************************