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Generalized the 93C66 EEPROM emulation to other capacities, and add 16-bit word size support. Update mapper 529 to use 93C56 EEPROM in 16-bit mode.

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This commit is contained in:
NewRisingSun
2025-04-07 22:22:44 +02:00
committed by LibretroAdmin
parent 6cbb11bdd1
commit 553865663d
7 changed files with 201 additions and 162 deletions
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21
src/boards/529.c
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@@ -20,6 +20,14 @@
#include "mapinc.h"
#include "vrc2and4.h"
#include "eeprom_93Cx6.h"
static uint8 eeprom_data[256];
static SFORMAT stateRegs[] ={
{ eeprom_data, 256, "EEPR" },
{ 0 }
};
static void sync () {
setprg16(0x8000, VRC24_prg[1]);
@@ -29,19 +37,28 @@ static void sync () {
}
DECLFR(UNLT230_readEEPROM) {
return 0xFF;
return eeprom_93Cx6_read()? 0x01: 0x00;
}
DECLFW(UNLT230_writeEEPROM) {
eeprom_93Cx6_write(A &0x04, A &0x02, A &0x01);
}
void UNLT230_power (void) {
VRC24_power();
eeprom_93Cx6_init(256, 16);
SetReadHandler(0x5000, 0x5FFF, UNLT230_readEEPROM);
SetWriteHandler(0xF800, 0xFFFF, UNLT230_writeEEPROM);
}
void UNLT230_Init (CartInfo *info) {
VRC24_init(info, sync, 0x04, 0x08, 1, 1, 0);
info->Power =UNLT230_power;
if (info->PRGRamSaveSize) {
info->Power =UNLT230_power;
AddExState(stateRegs, ~0, 0, 0);
eeprom_93Cx6_storage = eeprom_data;
info->battery = 1;
info->SaveGame[0] = eeprom_data;
info->SaveGameLen[0] = 256;
}
}