admin/ci-libretro-fceumm
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add mapper 270, add mapper 256 submapper 14 (CPU opcode encryption)

Browse Source
This commit is contained in:
NewRisingSun
2025-04-01 22:54:58 +02:00
committed by LibretroAdmin
parent 7194d208d9
commit 1f19807dd6
6 changed files with 110 additions and 47 deletions
Download Patch File Download Diff File Expand all files Collapse all files

148
src/boards/onebus.c
View File

@@ -28,9 +28,13 @@
#include "mapinc.h"
static uint8 submapper;
static void (*Sync)(void);
static uint8 *CHRRAM;
static uint32 CHRRAMSIZE;
/* General Purpose Registers */
static uint8 cpu410x[16], ppu201x[16], apu40xx[64];
static uint8 cpu410x[64], ppu201x[16], apu40xx[64], reg4242, dipswitch;
static const uint8 *cpuMangle, *ppuMangle, *mmc3Mangle;
/* IRQ Registers */
static uint8 IRQCount, IRQa, IRQReload;
@@ -49,7 +53,7 @@ static readfunc defapuread[64];
static SFORMAT StateRegs[] =
{
{ cpu410x, 16, "REGC" },
{ cpu410x, 64, "REGC" },
{ ppu201x, 16, "REGS" },
{ apu40xx, 64, "REGA" },
{ &IRQReload, 1, "IRQR" },
@@ -61,39 +65,31 @@ static SFORMAT StateRegs[] =
{ &pcm_size, 2, "PCMS" },
{ &pcm_latch, 2, "PCML" },
{ &pcm_clock, 2, "PCMC" },
{ &reg4242, 1, "4242" },
{ &dipswitch, 1, "DIPS" },
{ 0 }
};
static uint8 *WRAM;
static void PSync(void) {
static void PSync(int AND, int OR) {
uint8 bankmode = cpu410x[0xb] & 7;
uint8 mask = (bankmode == 0x7) ? (0xff) : (0x3f >> bankmode);
uint32 block = ((cpu410x[0x0] & 0xf0) << 4) + (cpu410x[0xa] & (~mask));
uint32 pswap = (mmc3cmd & 0x40) << 8;
#if 0
uint8 bank0 = (cpu410x[0xb] & 0x40)?(~1):(cpu410x[0x7]);
uint8 bank1 = cpu410x[0x8];
uint8 bank2 = (cpu410x[0xb] & 0x40)?(cpu410x[0x9]):(~1);
uint8 bank3 = ~0;
#endif
uint8 bank0 = cpu410x[0x7];
uint8 bank1 = cpu410x[0x8];
uint8 bank2 = (cpu410x[0xb] & 0x40) ? (cpu410x[0x9]) : (~1);
uint8 bank3 = ~0;
/* FCEU_printf(" PRG: %04x [%02x]",0x8000^pswap,block | (bank0 & mask)); */
setprg8(0x8000 ^ pswap, block | (bank0 & mask));
/* FCEU_printf(" %04x [%02x]",0xa000^pswap,block | (bank1 & mask)); */
setprg8(0xa000, block | (bank1 & mask));
/* FCEU_printf(" %04x [%02x]",0xc000^pswap,block | (bank2 & mask)); */
setprg8(0xc000 ^ pswap, block | (bank2 & mask));
/* FCEU_printf(" %04x [%02x]\n",0xe000^pswap,block | (bank3 & mask)); */
setprg8(0xe000, block | (bank3 & mask));
setprg8(0x8000 ^ pswap,(block | (bank0 & mask)) &AND | OR);
setprg8(0xa000, (block | (bank1 & mask)) &AND | OR);
setprg8(0xc000 ^ pswap,(block | (bank2 & mask)) &AND | OR);
setprg8(0xe000, (block | (bank3 & mask)) &AND | OR);
}
static void CSync(void) {
static void CSync(int AND, int OR) {
static const uint8 midx[8] = { 0, 1, 2, 0, 3, 4, 5, 0 };
uint8 mask = 0xff >> midx[ppu201x[0xa] & 7];
uint32 block = ((cpu410x[0x0] & 0x0f) << 11) + ((ppu201x[0x8] & 0x70) << 4) + (ppu201x[0xa] & (~mask));
@@ -108,24 +104,25 @@ static void CSync(void) {
uint8 bank6 = ppu201x[0x4];
uint8 bank7 = ppu201x[0x5];
setchr1(0x0000 ^ cswap, block | (bank0 & mask));
setchr1(0x0400 ^ cswap, block | (bank1 & mask));
setchr1(0x0800 ^ cswap, block | (bank2 & mask));
setchr1(0x0c00 ^ cswap, block | (bank3 & mask));
setchr1(0x1000 ^ cswap, block | (bank4 & mask));
setchr1(0x1400 ^ cswap, block | (bank5 & mask));
setchr1(0x1800 ^ cswap, block | (bank6 & mask));
setchr1(0x1c00 ^ cswap, block | (bank7 & mask));
setchr1(0x0000 ^ cswap,(block | (bank0 & mask)) &AND | OR);
setchr1(0x0400 ^ cswap,(block | (bank1 & mask)) &AND | OR);
setchr1(0x0800 ^ cswap,(block | (bank2 & mask)) &AND | OR);
setchr1(0x0c00 ^ cswap,(block | (bank3 & mask)) &AND | OR);
setchr1(0x1000 ^ cswap,(block | (bank4 & mask)) &AND | OR);
setchr1(0x1400 ^ cswap,(block | (bank5 & mask)) &AND | OR);
setchr1(0x1800 ^ cswap,(block | (bank6 & mask)) &AND | OR);
setchr1(0x1c00 ^ cswap,(block | (bank7 & mask)) &AND | OR);
setmirror((mirror ^ 1) & 1);
}
static void Sync(void) {
PSync();
CSync();
static void Sync256(void) {
PSync(0x0FFF, 0x000);
CSync(0x7FFF, 0x000);
encryptOpcodes =submapper ==14 && cpu410x[0x1C] &0x40? 67: 0;
}
static const uint8 cpuMangle[16][4] = {
static const uint8 cpuMangles[16][4] = {
{ 0, 1, 2, 3 }, /* Submapper 0: Normal */
{ 0, 1, 2, 3 }, /* Submapper 1: Waixing VT03 */
{ 1, 0, 2, 3 }, /* Submapper 2: Trump Grand */
@@ -145,20 +142,25 @@ static const uint8 cpuMangle[16][4] = {
};
static DECLFW(UNLOneBusWriteCPU410X) {
/* FCEU_printf("CPU %04x:%04x\n",A,V); */
A &=0xF;
A &=0x3F;
switch (A) {
case 0x1: IRQLatch = V & 0xfe; break; /* íå ïî äàòàøèòó */
case 0x2: IRQReload = 1; break;
case 0x3: X6502_IRQEnd(FCEU_IQEXT); IRQa = 0; break;
case 0x4: IRQa = 1; break;
default:
if (A >=0x7 && A <=0xA) A =0x7 +cpuMangle[submapper][A -0x7];
if (A >=0x7 && A <=0xA) A =0x7 +cpuMangle[A -0x7];
cpu410x[A] = V;
Sync();
}
}
static const uint8 ppuMangle[16][6] = {
static DECLFW(UNLOneBusWriteCPU4242) {
reg4242 =V;
Sync();
}
static const uint8 ppuMangles[16][6] = {
{ 0, 1, 2, 3, 4, 5 }, /* Submapper 0: Normal */
{ 1, 0, 5, 4, 3, 2 }, /* Submapper 1: Waixing VT03 */
{ 0, 1, 2, 3, 4, 5 }, /* Submapper 2: Trump Grand */
@@ -179,12 +181,12 @@ static const uint8 ppuMangle[16][6] = {
static DECLFW(UNLOneBusWritePPU201X) {
/* FCEU_printf("PPU %04x:%04x\n",A,V); */
A &=0x0F;
if (A >=2 && A <=7) A =2 +ppuMangle[submapper][A -2];
if (A >=2 && A <=7) A =2 +ppuMangle[A -2];
ppu201x[A] = V;
Sync();
}
static const uint8 mmc3Mangle[16][8] = {
static const uint8 mmc3Mangles[16][8] = {
{ 0, 1, 2, 3, 4, 5, 6, 7 }, /* Submapper 0: Normal */
{ 5, 4, 3, 2, 1, 0, 6, 7 }, /* Submapper 1: Waixing VT03 */
{ 0, 1, 2, 3, 4, 5, 7, 6 }, /* Submapper 2: Trump Grand */
@@ -204,27 +206,28 @@ static const uint8 mmc3Mangle[16][8] = {
};
static DECLFW(UNLOneBusWriteMMC3) {
/* FCEU_printf("MMC %04x:%04x\n",A,V); */
if (~cpu410x[0x0B] &0x08) /* FWEN bit must be 0 */
switch (A & 0xe001) {
case 0x8000:
V =V &0xF8 | mmc3Mangle[submapper][V &0x07];
V =V &0xF8 | mmc3Mangle[V &0x07];
mmc3cmd = (mmc3cmd & 0x38) | (V & 0xc7);
Sync();
break;
case 0x8001:
{
switch (mmc3cmd & 7) {
case 0: ppu201x[0x6] = V; CSync(); break;
case 1: ppu201x[0x7] = V; CSync(); break;
case 2: ppu201x[0x2] = V; CSync(); break;
case 3: ppu201x[0x3] = V; CSync(); break;
case 4: ppu201x[0x4] = V; CSync(); break;
case 5: ppu201x[0x5] = V; CSync(); break;
case 6: cpu410x[0x7] = V; PSync(); break;
case 7: cpu410x[0x8] = V; PSync(); break;
case 0: ppu201x[0x6] = V; Sync(); break;
case 1: ppu201x[0x7] = V; Sync(); break;
case 2: ppu201x[0x2] = V; Sync(); break;
case 3: ppu201x[0x3] = V; Sync(); break;
case 4: ppu201x[0x4] = V; Sync(); break;
case 5: ppu201x[0x5] = V; Sync(); break;
case 6: cpu410x[0x7] = V; Sync(); break;
case 7: cpu410x[0x8] = V; Sync(); break;
}
break;
}
case 0xa000: mirror = V; CSync(); break;
case 0xa000: mirror = V; Sync(); break;
case 0xc000: IRQLatch = V & 0xfe; break;
case 0xc001: IRQReload = 1; break;
case 0xe000: X6502_IRQEnd(FCEU_IQEXT); IRQa = 0; break;
@@ -288,6 +291,10 @@ static DECLFR(UNLOneBusReadAPU40XX) {
return result;
}
static DECLFR(readDIP) {
return dipswitch;
}
static void UNLOneBusCpuHook(int a) {
if (pcm_enable) {
pcm_latch -= a;
@@ -316,6 +323,7 @@ static void UNLOneBusPower(void) {
memset(cpu410x, 0x00, sizeof(cpu410x));
memset(ppu201x, 0x00, sizeof(ppu201x));
memset(apu40xx, 0x00, sizeof(apu40xx));
cpu410x[0x1C] =submapper ==14? 0x40: 0x00;
SetupCartCHRMapping(0, PRGptr[0], PRGsize[0], 0);
@@ -326,14 +334,17 @@ static void UNLOneBusPower(void) {
SetReadHandler(0x4000, 0x403f, UNLOneBusReadAPU40XX);
SetWriteHandler(0x4000, 0x403f, UNLOneBusWriteAPU40XX);
SetReadHandler(0x412C, 0x412C, readDIP);
SetReadHandler(0x6000, 0xFFFF, CartBR);
SetWriteHandler(0x6000, 0x7FFF, CartBW);
SetWriteHandler(0x2010, 0x201f, UNLOneBusWritePPU201X);
SetWriteHandler(0x4100, 0x410f, UNLOneBusWriteCPU410X);
SetWriteHandler(0x4100, 0x413f, UNLOneBusWriteCPU410X);
SetWriteHandler(0x4242, 0x4242, UNLOneBusWriteCPU4242);
SetWriteHandler(0x8000, 0xffff, UNLOneBusWriteMMC3);
FCEU_CheatAddRAM(8, 0x6000, WRAM);
setprg8r(0x10, 0x6000, 0);
dipswitch =0;
Sync();
}
@@ -343,6 +354,9 @@ static void UNLOneBusReset(void) {
memset(cpu410x, 0x00, sizeof(cpu410x));
memset(ppu201x, 0x00, sizeof(ppu201x));
memset(apu40xx, 0x00, sizeof(apu40xx));
cpu410x[0x1C] =submapper ==14? 0x40: 0x00;
reg4242 =0;
dipswitch ^=8;
Sync();
}
@@ -361,12 +375,17 @@ void UNLOneBus_Init(CartInfo *info) {
info->Power = UNLOneBusPower;
info->Reset = UNLOneBusReset;
info->Close = UNLOneBus_Close;
Sync =Sync256;
if (info->iNES2)
submapper =info->submapper;
else
submapper =(((*(uint32*)&(info->MD5)) == 0x305fcdc3) || ((*(uint32*)&(info->MD5)) == 0x6abfce8e))? 2: 0; /* PowerJoy Supermax Carts */
cpuMangle =cpuMangles[submapper];
ppuMangle =ppuMangles[submapper];
mmc3Mangle =mmc3Mangles[submapper];
GameHBIRQHook = UNLOneBusIRQHook;
MapIRQHook = UNLOneBusCpuHook;
GameStateRestore = StateRestore;
@@ -376,3 +395,38 @@ void UNLOneBus_Init(CartInfo *info) {
SetupCartPRGMapping(0x10, WRAM, 8192, 1);
}
static void Sync270(void) {
int OR =0;
switch(submapper) {
case 1: OR = cpu410x[0x2C] &0x02? 0x0800: 0x0000;
break;
case 2: OR =(cpu410x[0x2C] &0x02? 0x0800: 0x0000) |
(cpu410x[0x2C] &0x01? 0x1000: 0x0000);
break;
case 3: OR = cpu410x[0x2C] &0x04? 0x0800: 0x0000;
break;
default: OR =(cpu410x[0x2C] &0x06? 0x0800: 0x0000) |
(cpu410x[0x2C] &0x01? 0x1000: 0x0000);
break;
}
PSync(0x07FF, OR);
if (reg4242 &1) {
setchr8r(0x10, 0);
setmirror((mirror ^ 1) & 1);
} else
CSync(0x3FFF, OR <<3);
}
void Mapper270_Init(CartInfo *info) {
UNLOneBus_Init(info);
cpuMangle =cpuMangles[0];
ppuMangle =ppuMangles[0];
mmc3Mangle =mmc3Mangles[0];
CHRRAMSIZE = 8192;
CHRRAM = (uint8*)FCEU_gmalloc(CHRRAMSIZE);
SetupCartCHRMapping(0x10, CHRRAM, CHRRAMSIZE, 1);
AddExState(CHRRAM, CHRRAMSIZE, 0, "CHRR");
Sync =Sync270;
}

2
src/fceu.c
View File

@@ -392,6 +392,8 @@ void PowerNES(void)
if (!GameInfo)
return;
encryptOpcodes =0;
FCEU_CheatResetRAM();
FCEU_CheatAddRAM(2, 0, RAM);

1
src/ines.c
View File

@@ -693,6 +693,7 @@ INES_BOARD_BEGIN()
INES_BOARD( "8-in-1 JY-119", 267, Mapper267_Init )
INES_BOARD( "COOLBOY/MINDKIDS", 268, Mapper268_Init ) /* Submapper distinguishes between COOLBOY and MINDKIDS */
INES_BOARD( "Games Xplosion 121-in-1", 269, Mapper269_Init )
INES_BOARD( "OneBus+412C Bankswitch", 270, Mapper270_Init )
INES_BOARD( "MGC-026", 271, Mapper271_Init )
INES_BOARD( "Akumajō Special: Boku Dracula-kun", 272, Mapper272_Init )
INES_BOARD( "80013-B", 274, BMC80013B_Init )

1
src/ines.h
View File

@@ -250,6 +250,7 @@ void Mapper254_Init(CartInfo *);
void Mapper255_Init(CartInfo *);
void GN45_Init(CartInfo *info); /* m361, m366 */
void Mapper270_Init(CartInfo *);
void Mapper272_Init(CartInfo *);
void Mapper277_Init(CartInfo *);
void Mapper281_Init(CartInfo *);

4
src/x6502.c
View File

@@ -27,6 +27,7 @@
#include "sound.h"
X6502 X;
uint8 encryptOpcodes =0;
#ifdef FCEUDEF_DEBUGGER
void (*X6502_Run)(int32 cycles);
@@ -491,6 +492,7 @@ static void X6502_RunDebug(int32 cycles) {
X.preexec = 1;
b1 = RdMem(_PC);
_PC++;
if (encryptOpcodes ==67) b1 =b1 &0x3F | b1 >>1 &0x40 | b1 <<1 &0x80;
switch (b1) {
#include "ops.h"
}
@@ -520,6 +522,7 @@ static void X6502_RunDebug(int32 cycles) {
FCEU_SoundCPUHook(temp);
_PC++;
if (encryptOpcodes ==67) b1 =b1 &0x3F | b1 >>1 &0x40 | b1 <<1 &0x80;
switch (b1) {
#include "ops.h"
}
@@ -617,6 +620,7 @@ void X6502_Run(int32 cycles)
FCEU_SoundCPUHook(temp);
X.PC = pbackus;
_PC++;
if (encryptOpcodes ==67) b1 =b1 &0x3F | b1 >>1 &0x40 | b1 <<1 &0x80;
switch (b1) {
#include "ops.h"
}

1
src/x6502.h
View File

@@ -36,6 +36,7 @@ void X6502_Run(int32 cycles);
extern uint32 timestamp;
extern uint32 sound_timestamp;
extern X6502 X;
extern uint8 encryptOpcodes;
#define N_FLAG 0x80
#define V_FLAG 0x40