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update 225 from fceumm to get 255 support too.

This commit is contained in:
zeromus 2023-01-18 11:05:30 -06:00
parent db6d5bed8c
commit ebf0c2c737
3 changed files with 44 additions and 35 deletions
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40
src/boards/225.cpp
View File

@ -2,6 +2,8 @@
*
* Copyright notice for this file:
* Copyright (C) 2011 CaH4e3
* Copyright (C) 2019 Libretro Team
* Copyright (C) 2020
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -16,15 +18,23 @@
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* PCB-018 board, discrete multigame cart 110-in-1
*
* Mapper 225
* Mapper 255
*
*/
/* 2020-2-20 - merge mapper 255, re-implement extra RAM */
#include "mapinc.h"
static uint8 prot[4], prg, mode, chr, mirr;
static uint8 extraRAM[4], prg, mode, chr, mirr;
static SFORMAT StateRegs[] =
{
{ prot, 4, "PROT" },
{ extraRAM, 4, "PROT" },
{ &prg, 1, "PRG" },
{ &chr, 1, "CHR" },
{ &mode, 1, "MODE" },
@ -36,14 +46,15 @@ static void Sync(void) {
if (mode) {
setprg16(0x8000, prg);
setprg16(0xC000, prg);
} else
}
else
setprg32(0x8000, prg >> 1);
setchr8(chr);
setmirror(mirr ^ 1);
}
static DECLFW(M225Write) {
uint32 bank = (A >> 14) & 1;
uint8 bank = (A >> 14) & 1;
mirr = (A >> 13) & 1;
mode = (A >> 12) & 1;
chr = (A & 0x3f) | (bank << 6);
@ -52,35 +63,28 @@ static DECLFW(M225Write) {
}
static DECLFW(M225LoWrite) {
if (A & 0x800) {
prot[A & 0x03] = V;
}
/* e.g. 115-in-1 [p1][!] CRC32 0xb39d30b4 */
if (A & 0x800) extraRAM[A & 3] = V & 0x0F;
}
static DECLFR(M225LoRead) {
if (A & 0x800) {
return prot[A & 3] & 0x0F;
}
if (A & 0x800) return extraRAM[A & 3];
return X.DB;
}
static void M225Power(void) {
prg = 0;
chr = 0;
mode = 0;
mirr = 0;
Sync();
SetReadHandler(0x5000, 0x5FFF, M225LoRead);
SetWriteHandler(0x5000, 0x5FFF, M225LoWrite);
SetReadHandler(0x5000, 0x5fff, M225LoRead);
SetWriteHandler(0x5000, 0x5fff, M225LoWrite);
SetReadHandler(0x8000, 0xFFFF, CartBR);
SetWriteHandler(0x8000, 0xFFFF, M225Write);
}
static void M225Reset(void) {
prg = 0;
chr = 0;
mode = 0;
mirr = 0;
Sync();
}
@ -94,3 +98,7 @@ void Mapper225_Init(CartInfo *info) {
GameStateRestore = StateRestore;
AddExState(&StateRegs, ~0, 0, 0);
}
void Mapper255_Init(CartInfo *info) {
Mapper225_Init(info);
}

2
src/ines.cpp
View File

@ -770,7 +770,7 @@ BMAPPINGLocal bmap[] = {
{"SAN GUO ZHI PIRATE", 252, Mapper252_Init},
{"DRAGON BALL PIRATE", 253, Mapper253_Init},
{"", 254, Mapper254_Init},
// {"", 255, Mapper255_Init}, // No good dumps for this mapper
{"", 255, Mapper255_Init}, // dupe of 225
//-------- Mappers 256-511 is the Supplementary Multilingual Plane ----------
//-------- Mappers 512-767 is the Supplementary Ideographic Plane -----------

1
src/ines.h
View File

@ -274,6 +274,7 @@ void Mapper250_Init(CartInfo *);
void Mapper252_Init(CartInfo *);
void Mapper253_Init(CartInfo *);
void Mapper254_Init(CartInfo *);
void Mapper255_Init(CartInfo *);
void Mapper354_Init(CartInfo *);
void Mapper406_Init(CartInfo *);