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Mapper 178: added submapper 3, which is a variant having a solder pad for menu selection.

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This commit is contained in:
NewRisingSun
2025-09-08 23:48:54 +02:00
parent 4d48988cf4
commit a08ae1ad0a
1 changed files with 35 additions and 11 deletions
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46
src/boards/178.c
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@@ -27,7 +27,9 @@
#include "mapinc.h" #include "mapinc.h"
static uint8 submapper;
static uint8 reg[4]; static uint8 reg[4];
static uint8 pad[2];
static uint8 *WRAM = NULL; static uint8 *WRAM = NULL;
static uint32 WRAMSIZE; static uint32 WRAMSIZE;
@@ -79,6 +81,10 @@ static uint8 decode(uint8 code) {
return (acc >> 8) & 0xff; return (acc >> 8) & 0xff;
} }
static DECLFR(readPad) {
return CartBR(A &~3 | pad[1] &3);
}
static void M178Sync(void) { static void M178Sync(void) {
uint32 sbank = reg[1] & 0x7; uint32 sbank = reg[1] & 0x7;
uint32 bbank = reg[2]; uint32 bbank = reg[2];
@@ -100,6 +106,7 @@ static void M178Sync(void) {
} }
setmirror((reg[0] & 1) ^ 1); setmirror((reg[0] & 1) ^ 1);
if (submapper == 3) SetReadHandler(0x8000, 0xffff, pad[0] &1? readPad: CartBR);
} }
static void M551Sync(void) { static void M551Sync(void) {
@@ -152,6 +159,11 @@ static DECLFR(M178ReadSnd) {
return X.DB; return X.DB;
} }
static DECLFW(writePad) {
pad[0] = V;
M178Sync();
}
static void M551Power(void) { static void M551Power(void) {
reg[0] = reg[1] = reg[2] = reg[3] = 0; reg[0] = reg[1] = reg[2] = reg[3] = 0;
M551Sync(); M551Sync();
@@ -159,9 +171,9 @@ static void M551Power(void) {
SetWriteHandler(0x4800, 0x4fff, M551Write); SetWriteHandler(0x4800, 0x4fff, M551Write);
SetWriteHandler(0x5800, 0x5fff, M178WriteSnd); SetWriteHandler(0x5800, 0x5fff, M178WriteSnd);
SetReadHandler(0x5800, 0x5fff, M178ReadSnd); SetReadHandler(0x5800, 0x5fff, M178ReadSnd);
SetReadHandler(0x8000, 0xffff, CartBR);
SetReadHandler(0x6000, 0x7fff, CartBR); SetReadHandler(0x6000, 0x7fff, CartBR);
SetWriteHandler(0x6000, 0x7fff, CartBW); SetWriteHandler(0x6000, 0x7fff, CartBW);
SetReadHandler(0x8000, 0xffff, CartBR);
FCEU_CheatAddRAM(WRAMSIZE >> 10, 0x6000, WRAM); FCEU_CheatAddRAM(WRAMSIZE >> 10, 0x6000, WRAM);
} }
@@ -172,10 +184,15 @@ static void M178Power(void) {
SetWriteHandler(0x4800, 0x4fff, M178Write); SetWriteHandler(0x4800, 0x4fff, M178Write);
SetWriteHandler(0x5800, 0x5fff, M178WriteSnd); SetWriteHandler(0x5800, 0x5fff, M178WriteSnd);
SetReadHandler(0x5800, 0x5fff, M178ReadSnd); SetReadHandler(0x5800, 0x5fff, M178ReadSnd);
SetReadHandler(0x6000, 0x7fff, CartBR);
SetWriteHandler(0x6000, 0x7fff, CartBW);
SetReadHandler(0x8000, 0xffff, CartBR); SetReadHandler(0x8000, 0xffff, CartBR);
FCEU_CheatAddRAM(WRAMSIZE >> 10, 0x6000, WRAM); if (submapper == 3)
SetWriteHandler(0x6000, 0x7fff, writePad);
else {
SetReadHandler(0x6000, 0x7fff, CartBR);
SetWriteHandler(0x6000, 0x7fff, CartBW);
FCEU_CheatAddRAM(WRAMSIZE >> 10, 0x6000, WRAM);
}
pad[0] = pad[1] = 0;
} }
static void M551Reset(void) { static void M551Reset(void) {
@@ -189,6 +206,8 @@ static void M178Reset(void)
/* Always reset to menu */ /* Always reset to menu */
reg[0] = reg[1] = reg[2] = reg[3] = 0; reg[0] = reg[1] = reg[2] = reg[3] = 0;
M178Sync(); M178Sync();
pad[0] = 0;
pad[1]++;
} }
static void M178SndClk(int a) static void M178SndClk(int a)
@@ -217,6 +236,7 @@ static void M178StateRestore(int version) {
} }
void Mapper178_Init(CartInfo *info) { void Mapper178_Init(CartInfo *info) {
submapper = info->submapper;
info->Power = M178Power; info->Power = M178Power;
info->Reset = M178Reset; info->Reset = M178Reset;
info->Close = M178Close; info->Close = M178Close;
@@ -225,14 +245,18 @@ void Mapper178_Init(CartInfo *info) {
jedi_table_init(); jedi_table_init();
WRAMSIZE = 32768; if (submapper == 3)
WRAM = (uint8*)FCEU_gmalloc(WRAMSIZE); AddExState(pad, 2, 0, "DIPS");
SetupCartPRGMapping(0x10, WRAM, WRAMSIZE, 1); else {
if (info->battery) { WRAMSIZE = 32768;
info->SaveGame[0] = WRAM; WRAM = (uint8*)FCEU_gmalloc(WRAMSIZE);
info->SaveGameLen[0] = WRAMSIZE; SetupCartPRGMapping(0x10, WRAM, WRAMSIZE, 1);
if (info->battery) {
info->SaveGame[0] = WRAM;
info->SaveGameLen[0] = WRAMSIZE;
}
AddExState(WRAM, WRAMSIZE, 0, "WRAM");
} }
AddExState(WRAM, WRAMSIZE, 0, "WRAM");
AddExState(&StateRegs, ~0, 0, 0); AddExState(&StateRegs, ~0, 0, 0);