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Add mapper 555

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libretroadmin 2024-06-15 13:07:14 +02:00
parent ac7ab8a99f
commit fe4a4f8a53
3 changed files with 112 additions and 1 deletions
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111
src/boards/mmc3.c
View File

@ -21,7 +21,7 @@
*/
/* Code for emulating iNES mappers 4,12,44,45,47,49,52,74,114,115,116,118,
119,165,205,245,249,250,254
119,165,205,245,249,250,254,555
*/
#include "mapinc.h"
@ -1428,6 +1428,115 @@ void Mapper254_Init(CartInfo *info) {
AddExState(EXPREGS, 2, 0, "EXPR");
}
/* ---------------------------- Mapper 555 ------------------------------ */
static uint8 m555_reg[2];
static uint8 m555_count_expired;
static uint32 m555_count;
static uint32 m555_count_target = 0x20000000;
static SFORMAT M555StateRegs[] = {
{ m555_reg, 2, "REGS" },
{ &m555_count, 2, "CNTR" },
{ &m555_count_expired, 2, "CNTE" },
{ 0 }
};
static void M555CW(uint32 A, uint8 V)
{
uint16 base = (m555_reg[0] << 5) & 0x80;
if ((m555_reg[0] & 0x06) == 0x02) {
if (V & 0x40) {
setchr1r(0x10, A, base | (V & 0x07));
} else {
setchr1(A, base | (V & 0xFF));
}
} else {
setchr1(A, base | (V & 0x7F));
}
}
static void M555PW(uint32 A, uint8 V) {
uint16 mask = ((m555_reg[0] << 3) & 0x18) | 0x07;
uint16 base = ((m555_reg[0] << 3) & 0x20);
setprg8(A, base | (V & mask));
}
static DECLFR(M555Read5)
{
if (A & 0x800)
return (0x5C | (m555_count_expired ? 0x80 : 0));
return WRAM[0x2000 | (A & 0xFFF)];
}
static DECLFW(M555Write5) {
if (A & 0x800) {
m555_reg[(A >> 10) & 0x01] = V;
FixMMC3PRG(MMC3_cmd);
FixMMC3CHR(MMC3_cmd);
} else {
WRAM[0x2000 | (A & 0xFFF)] = V;
}
}
static void M555Reset(void) {
m555_count_target = 0x20000000 | ((uint32)GameInfo->cspecial << 25);
m555_count = 0;
memset(m555_reg, 0, sizeof(m555_reg));
MMC3RegReset();
}
static void M555Power(void) {
m555_count_target = 0x20000000 | ((uint32)GameInfo->cspecial << 25);
m555_count = 0;
memset(m555_reg, 0, sizeof(m555_reg));
GenMMC3Power();
SetReadHandler(0x5000, 0x5FFF, M555Read5);
SetWriteHandler(0x5000, 0x5FFF, M555Write5);
setprg8r(0x10, 0x6000, 0);
SetReadHandler(0x6000, 0x7FFF, CartBR);
SetWriteHandler(0x6000, 0x7FFF, CartBW);
}
static void M555CPUIRQHook(int a) {
while (a--) {
if (!(m555_reg[0] & 0x08))
{
m555_count = 0;
m555_count_expired = false;
}
else
{
if (++m555_count == m555_count_target)
m555_count_expired = true;
}
}
}
void Mapper555_Init(CartInfo *info) {
GenMMC3_Init(info, 0, 0, 0, info->battery);
cwrap = M555CW;
pwrap = M555PW;
info->Power = M555Power;
info->Reset = M555Reset;
MapIRQHook = M555CPUIRQHook;
AddExState(M555StateRegs, ~0, 0, NULL);
WRAMSIZE = 16 * 1024;
WRAM = (uint8 *)FCEU_gmalloc(WRAMSIZE);
SetupCartPRGMapping(0x10, WRAM, WRAMSIZE, 1);
AddExState(WRAM, WRAMSIZE, 0, "WRAM");
CHRRAMSIZE = 8 * 1024;
CHRRAM = (uint8 *)FCEU_gmalloc(CHRRAMSIZE);
SetupCartCHRMapping(0x10, CHRRAM, CHRRAMSIZE, 1);
AddExState(CHRRAM, CHRRAMSIZE, 0, "CHRR");
}
/* ---------------------------- UNIF Boards ----------------------------- */
void TBROM_Init(CartInfo *info) {

1
src/ines.c
View File

@ -873,6 +873,7 @@ INES_BOARD_BEGIN()
INES_BOARD( "", 551, Mapper178_Init )
INES_BOARD( "SACHEN 3013", 553, Mapper553_Init )
INES_BOARD( "KS-7010", 554, Mapper554_Init )
INES_BOARD( "", 555, Mapper555_Init )
INES_BOARD( "JY-215", 556, Mapper556_Init )
INES_BOARD( "", 550, Mapper550_Init )
INES_BOARD( "YC-03-09", 558, Mapper558_Init )

1
src/ines.h
View File

@ -371,6 +371,7 @@ void Mapper543_Init(CartInfo *);
void Mapper550_Init(CartInfo *);
void Mapper553_Init(CartInfo *);
void Mapper554_Init(CartInfo *);
void Mapper555_Init(CartInfo *);
void Mapper556_Init(CartInfo *);
void Mapper558_Init(CartInfo *);