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Mapper 556: use the modularized ASIC cores.

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NewRisingSun
2025-09-06 01:52:42 +02:00
parent dbe15a7910
commit bf1aa2b02d
2 changed files with 58 additions and 286 deletions
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8
src/boards/asic_tc3294.c
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@@ -37,14 +37,14 @@ void TC3294_syncWRAM (int OR) {
}
void TC3294_syncPRG (int AND, int OR) {
int prgAND =~TC3294_reg[3] &0x3F;
int prgAND = ~TC3294_reg[3] &0x3F;
int prgOR = TC3294_reg[1] | TC3294_reg[2] <<2 &0x300;
MMC3_syncPRG(prgAND &AND, prgOR &~prgAND &AND | OR &~AND);
}
void TC3294_syncCHR (int AND, int OR) {
int chrAND =0xFF >>(~TC3294_reg[2] &0xF);
int chrOR =TC3294_reg[0] | TC3294_reg[2] <<4 &0xF00;
int chrAND = 0xFF >>(~TC3294_reg[2] &0xF);
int chrOR = TC3294_reg[0] | TC3294_reg[2] <<4 &0xF00;
MMC3_syncCHR(chrAND &AND, chrOR &~chrAND &AND | OR &~AND);
}
@@ -54,7 +54,7 @@ void TC3294_syncMirror () {
DECLFW(TC3294_write) {
if (~TC3294_reg[3] &0x40) {
TC3294_reg[TC3294_index++ &3] =V;
TC3294_reg[TC3294_index++ &3] = V;
TC3294_cbSync();
}
}