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

Mapper 394: Add large variant. Correct issue when soft-resetting from JY to MMC3 mode.

Browse Source
This commit is contained in:
NewRisingSun
2025-04-01 18:56:49 +02:00
committed by LibretroAdmin
parent 0b8ec19ffe
commit 6e8b6c87ab
1 changed files with 8 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/boards/jyasic.c
View File

@@ -45,6 +45,7 @@ static uint8 mul[2];
static uint8 adder;
static uint8 test;
static uint8 dipSwitch;
static uint8 submapper;
static uint8 cpuWriteHandlersSet;
static writefunc cpuWriteHandlers[0x10000]; /* Actual write handlers for CPU write trapping as a method fo IRQ clocking */
@@ -689,8 +690,8 @@ void Mapper421_Init(CartInfo *info)
static uint8 HSK007Reg[4];
void sync394 (void) /* Called when J.Y. ASIC is active */
{
int prgOR =HSK007Reg[3] <<1 &0x010 | HSK007Reg[1] <<5 &0x020;
int chrOR =HSK007Reg[3] <<1 &0x080 | HSK007Reg[1] <<8 &0x100;
int prgOR =HSK007Reg[3] <<1 &0x010 | HSK007Reg[1] <<5 &0x060;
int chrOR =HSK007Reg[3] <<1 &0x080 | HSK007Reg[1] <<6 &0x100 | HSK007Reg[1] <<8 &0x200;
syncPRG(0x1F, prgOR);
syncCHR(0xFF, chrOR);
syncNT (0xFF, chrOR);
@@ -698,7 +699,7 @@ void sync394 (void) /* Called when J.Y. ASIC is active */
static void Mapper394_PWrap(uint32 A, uint8 V)
{
int prgAND =HSK007Reg[3] &0x10? 0x1F: 0x0F;
int prgOR =HSK007Reg[3] <<1 &0x010 | HSK007Reg[1] <<5 &0x020;
int prgOR =HSK007Reg[3] <<1 &0x010 | HSK007Reg[1] <<5 &0x060;
if (HSK007Reg[1] &0x08)
setprg8(A, V &prgAND | prgOR &~prgAND);
else
@@ -709,7 +710,7 @@ static void Mapper394_PWrap(uint32 A, uint8 V)
static void Mapper394_CWrap(uint32 A, uint8 V)
{
int chrAND =HSK007Reg[3] &0x80? 0xFF: 0x7F;
int chrOR =HSK007Reg[3] <<1 &0x080 | HSK007Reg[1] <<8 &0x100;
int chrOR =submapper ==1? (HSK007Reg[3] <<1 &0x080 | HSK007Reg[1] <<8 &0x200 | HSK007Reg[1] <<6 &0x100): (HSK007Reg[3] <<1 &0x080 | HSK007Reg[1] <<8 &0x100);
setchr1(A, V &chrAND | chrOR &~chrAND);
}
static DECLFW(Mapper394_Write)
@@ -775,13 +776,15 @@ static void Mapper394_power(void)
HSK007Reg[0] =0x00;
HSK007Reg[1] =0x0F;
HSK007Reg[2] =0x00;
HSK007Reg[3] =0x10;
HSK007Reg[3] =0x90;
irqEnabled =0;
GenMMC3Power();
SetWriteHandler(0x5000, 0x5FFF, Mapper394_Write);
}
void Mapper394_Init(CartInfo *info)
{
submapper =info->submapper;
allowExtendedMirroring =1;
sync =sync394;
JYASIC_init(info);