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Add mapper 255 as a variant, rather than a duplicate, of mapper 225.

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NewRisingSun
2026-03-13 10:41:23 +01:00
parent b60fc16d15
commit bf2a9ad3d5
2 changed files with 10 additions and 4 deletions
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6
src/boards/225.c
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@@ -31,6 +31,7 @@
#include "mapinc.h" #include "mapinc.h"
static uint8 extraRAM[4], prg, mode, chr, mirr; static uint8 extraRAM[4], prg, mode, chr, mirr;
static uint8 is255;
static SFORMAT StateRegs[] = static SFORMAT StateRegs[] =
{ {
@@ -56,6 +57,9 @@ static DECLFW(M225Write) {
uint8 bank = (A >> 14) & 1; uint8 bank = (A >> 14) & 1;
mirr = (A >> 13) & 1; mirr = (A >> 13) & 1;
mode = (A >> 12) & 1; mode = (A >> 12) & 1;
if (is255)
chr = (V & 0x03) | (A & 0x3C) | (bank << 6);
else
chr = (A & 0x3f) | (bank << 6); chr = (A & 0x3f) | (bank << 6);
prg = ((A >> 6) & 0x3f) | (bank << 6); prg = ((A >> 6) & 0x3f) | (bank << 6);
Sync(); Sync();
@@ -92,6 +96,7 @@ static void StateRestore(int version) {
} }
void Mapper225_Init(CartInfo *info) { void Mapper225_Init(CartInfo *info) {
is255 = 0;
info->Reset = M225Reset; info->Reset = M225Reset;
info->Power = M225Power; info->Power = M225Power;
GameStateRestore = StateRestore; GameStateRestore = StateRestore;
@@ -100,4 +105,5 @@ void Mapper225_Init(CartInfo *info) {
void Mapper255_Init(CartInfo *info) { void Mapper255_Init(CartInfo *info) {
Mapper225_Init(info); Mapper225_Init(info);
is255 = 1;
} }

2
src/ines.c
View File

@@ -708,7 +708,7 @@ INES_BOARD_BEGIN()
INES_BOARD( "SAN GUO ZHI PIRATE", 252, Mapper252_Init ) INES_BOARD( "SAN GUO ZHI PIRATE", 252, Mapper252_Init )
INES_BOARD( "DRAGON BALL PIRATE", 253, Mapper253_Init ) INES_BOARD( "DRAGON BALL PIRATE", 253, Mapper253_Init )
INES_BOARD( "", 254, Mapper254_Init ) INES_BOARD( "", 254, Mapper254_Init )
INES_BOARD( "", 255, Mapper255_Init ) /* Duplicate of M225? */ INES_BOARD( "", 255, Mapper255_Init ) /* Variant of M225 */
/* NES 2.0 MAPPERS */ /* NES 2.0 MAPPERS */