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

Mapper 351: Correct CHR mask, add FDS-like mirroring control

Browse Source
This commit is contained in:
NewRisingSun
2022-07-27 22:01:05 +02:00
parent 94a6359a9d
commit 2fd8f6c233
1 changed files with 7 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/boards/351.c
View File

@@ -100,7 +100,7 @@ static void sync () {
setprg32(0x8000, (MMC1_reg[3] &prgAND | prgOR &~prgAND) >>1); setprg32(0x8000, (MMC1_reg[3] &prgAND | prgOR &~prgAND) >>1);
} }
chrAND =reg[2] &0x10? 0x1F: reg[2] &0x20? 0x7F: 0xFF; chrAND =reg[2] &0x10 && ~reg[2] &0x20? 0x1F: reg[2] &0x20? 0x7F: 0xFF;
chrOR =reg[0] <<1; chrOR =reg[0] <<1;
if (reg[2] &0x01) /* CHR RAM mode */ if (reg[2] &0x01) /* CHR RAM mode */
setchr8r(0x10, 0); setchr8r(0x10, 0);
@@ -265,6 +265,11 @@ static DECLFW(writeReg) {
sync(); sync();
} }
static DECLFW(writeFDSMirroring) {
MMC3_mirroring =V >>3 &1;
sync();
}
static void Mapper351_power(void) { static void Mapper351_power(void) {
int i; int i;
for (i =0; i <4; i++) reg[i] =0; for (i =0; i <4; i++) reg[i] =0;
@@ -281,6 +286,7 @@ static void Mapper351_power(void) {
SetReadHandler(0x6000, 0xFFFF, CartBR); SetReadHandler(0x6000, 0xFFFF, CartBR);
SetReadHandler(0x5000, 0x5FFF, readDIP); SetReadHandler(0x5000, 0x5FFF, readDIP);
SetWriteHandler(0x5000, 0x5FFF, writeReg); SetWriteHandler(0x5000, 0x5FFF, writeReg);
SetWriteHandler(0x4025, 0x4025, writeFDSMirroring);
applyMode(); applyMode();
sync(); sync();
} }