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Mapper 14: use the modularized ASIC cores. Mapper 116: Add multicart variant.

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This commit is contained in:
NewRisingSun
2025-09-06 13:12:15 +02:00
parent b5fff6c80f
commit 399daf7a61
3 changed files with 133 additions and 126 deletions
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47
src/boards/116.c
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@@ -18,10 +18,6 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* NES 2.0 Mapper 556
* Used for the for the 餓狼傳說 激鬥篇 HiK 7-in-1 (JY-215) multicart.
*/
#include "mapinc.h"
#include "asic_mmc1.h"
#include "asic_mmc3.h"
@@ -29,19 +25,33 @@
static uint8 submapper;
static uint8 reg;
static uint8 init;
static uint8 init; /* Games switch between ASICs expecting registers to keep their value, so initialize each ASIC only on the first switch and use this bitfield */
static uint8 game;
static SFORMAT StateRegs[] = {
static SFORMAT stateRegs[] = {
{ &reg, 1, "MODE" },
{ &init, 1, "INIT" },
{ 0 },
};
static SFORMAT stateRegsMulti[] = {
{ &game, 1, "GAME" },
{ 0 },
};
static void sync (void) {
int prgAND = 0x3F;
int chrAND = 0xFF;
int prgOR = 0x00 &~prgAND;
int chrOR = reg <<6 &0x100 &~chrAND;
int prgAND, chrAND, prgOR, chrOR;
if (submapper == 3) { /* First game is 256K+256K, the others 128K+128K */
prgAND = game? 0x0F: 0x1F;
chrAND = game? 0x7F: 0xFF;
prgOR = game <<4 &~prgAND;
chrOR = game <<7 &~chrAND;
} else {
prgAND = 0x3F;
chrAND = 0xFF;
prgOR = 0x00 &~prgAND;
chrOR = reg <<6 &0x100 &~chrAND;
}
if (reg &0x02) {
prgAND >>= 1;
prgOR >>= 1;
@@ -67,9 +77,12 @@ int Huang2_getPRGBank (uint8 bank) {
}
static void applyMode (uint8 clear) {
PPU_hook = NULL;
MapIRQHook = NULL;
GameHBIRQHook = NULL;
if (reg &0x02) {
MMC1_activate(clear && init &1, sync, MMC1_TYPE_MMC1B, submapper == 2? Huang2_getPRGBank: NULL, NULL, NULL, NULL);
MMC1_writeReg(0x8000, 0x80);
if (submapper != 1) MMC1_writeReg(0x8000, 0x80);
init &= ~1;
} else
if (reg &0x01) {
@@ -77,7 +90,7 @@ static void applyMode (uint8 clear) {
init &= ~2;
} else {
VRC2_activate(clear && init &4, sync, 0x01, 0x02, NULL, NULL, NULL, NULL);
if (init &4) {
if (init &4) { /* The earlier version of Somari needs specific VRC2 CHR register initialization */
VRC24_writeReg(0xB000, 0xFF); VRC24_writeReg(0xB001, 0xFF); VRC24_writeReg(0xB002, 0xFF); VRC24_writeReg(0xB003, 0xFF);
VRC24_writeReg(0xC000, 0xFF); VRC24_writeReg(0xC001, 0xFF); VRC24_writeReg(0xC002, 0xFF); VRC24_writeReg(0xC003, 0xFF);
VRC24_writeReg(0xD000, 0xFF); VRC24_writeReg(0xD001, 0xFF); VRC24_writeReg(0xD002, 0xFF); VRC24_writeReg(0xD003, 0xFF);
@@ -99,14 +112,17 @@ static DECLFW(writeReg) {
}
static void reset (void) {
reg = 0;
reg = 1;
init = 7;
if (++game == 1) ++game; /* First game is twice as large */
if (game >= ROM_size /8) game = 0;
applyMode(1);
}
static void power (void) {
reg = 0;
reg = 1;
init = 7;
game = 0;
SetReadHandler(0x8000, 0xFFFF, CartBR);
SetWriteHandler(0x4020, 0x5FFF, writeReg);
applyMode(1);
@@ -124,5 +140,6 @@ void UNLSL12_Init (CartInfo *info) {
info->Reset = reset;
info->Power = power;
GameStateRestore = restore;
AddExState(StateRegs, ~0, 0, 0);
AddExState(stateRegs, ~0, 0, 0);
if (submapper == 3) AddExState(stateRegsMulti, ~0, 0, 0);
}