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

Mapper 30: Add submappers.

Browse Source
This commit is contained in:
NewRisingSun
2025-09-09 23:35:32 +02:00
parent 35033127b5
commit 7e023ec488
1 changed files with 12 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
src/boards/unrom512.c
View File

@@ -43,6 +43,7 @@
static uint8 fceumm_flash_buf[flashdata_size + flash_write_count_size];
static uint32 fceumm_flash_buf_size = sizeof(fceumm_flash_buf);
static uint8 submapper;
static uint8 latche, latcheinit, bus_conflict, chrram_mask, software_id=0;
static uint16 latcha;
static uint8 *flashdata = fceumm_flash_buf + flash_write_count_size;
@@ -135,11 +136,11 @@ static void UNROM512LatchPower(void) {
latche = latcheinit;
WHSync();
SetReadHandler(0x8000, 0xFFFF, UNROM512LatchRead);
if (!flash_save)
if (submapper == 0 && !flash_save || submapper == 2)
SetWriteHandler(0x8000, 0xFFFF, UNROM512HLatchWrite);
else
{
SetWriteHandler(0x8000, 0xBFFF, UNROM512LLatchWrite);
if (submapper != 4) SetWriteHandler(0x8000, 0xBFFF, UNROM512LLatchWrite);
SetWriteHandler(0xC000, 0xFFFF, UNROM512HLatchWrite);
}
}
@@ -205,12 +206,15 @@ static void UNROM512HSync(void) {
setfprg16(0x8000, flash_bank);
setfprg16(0xC000, ~0);
setchr8r(0, (latche & chrram_mask) >> 5);
setmirror(MI_0 + (latche >> 7));
if (submapper == 3)
setmirror(latche &0x80? MI_V: MI_H);
else
setmirror(MI_0 + (latche >> 7));
}
void UNROM512_Init(CartInfo *info) {
int mirror;
submapper = info->submapper;
memset(fceumm_flash_buf, 0x00, fceumm_flash_buf_size);
flash_state = 0;
flash_bank = 0;
@@ -224,6 +228,9 @@ void UNROM512_Init(CartInfo *info) {
chrram_mask = 0x60;
mirror = (head.ROM_type & 1) | ((head.ROM_type & 8) >> 2);
if (submapper == 3) /* Mega Man II (30th Anniversary Edition): switchable H/V */
SetupCartMirroring(MI_V, 0, NULL);
else
switch (mirror) {
case 0: /* hard horizontal, internal */
SetupCartMirroring(MI_H, 1, NULL);
@@ -238,7 +245,7 @@ void UNROM512_Init(CartInfo *info) {
SetupCartMirroring(4, 1, VROM + (info->CHRRamSize - 8192));
break;
}
bus_conflict = !info->battery;
bus_conflict = submapper == 0 && !info->battery || submapper == 2;
latcheinit = 0;
WLSync = UNROM512LSync;
WHSync = UNROM512HSync;