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m208: Add support for submapper 1

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negativeExponent
2022-02-14 16:11:58 +08:00
parent dbba42e984
commit a1ca113b34
1 changed files with 23 additions and 3 deletions
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26
src/boards/208.c
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@@ -2,6 +2,7 @@
* *
* Copyright notice for this file: * Copyright notice for this file:
* Copyright (C) 2005 CaH4e3 * Copyright (C) 2005 CaH4e3
* Copyright (C) 2022 negativeExponent
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@@ -17,10 +18,17 @@
* along with this program; if not, write to the Free Software * along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/ */
/* 2022-2-14
* - add support for submapper 1, Mortal Kombat (JJ-01) (Ch) [!]
* - add mirroring
*/
#include "mapinc.h" #include "mapinc.h"
#include "mmc3.h" #include "mmc3.h"
static uint8 submapper;
static const uint8 lut[256] = { static const uint8 lut[256] = {
0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x49, 0x19, 0x09, 0x59, 0x49, 0x19, 0x09, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x49, 0x19, 0x09, 0x59, 0x49, 0x19, 0x09,
0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x51, 0x41, 0x11, 0x01, 0x51, 0x41, 0x11, 0x01, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x51, 0x41, 0x11, 0x01, 0x51, 0x41, 0x11, 0x01,
@@ -41,11 +49,21 @@ static const uint8 lut[256] = {
}; };
static void M208PW(uint32 A, uint8 V) { static void M208PW(uint32 A, uint8 V) {
setprg32(0x8000, EXPREGS[5]); if (submapper == 1)
setprg32(0x8000, DRegBuf[6] >> 2);
else
setprg32(0x8000, (EXPREGS[5] & 0x1) | ((EXPREGS[5] >> 3) & 0x2));
}
static void M208MW(uint8 V) {
if (submapper == 1)
setmirror((V & 1) ^ 1);
else
setmirror(((EXPREGS[5] >> 5) & 1) ^ 1);
} }
static DECLFW(M208Write) { static DECLFW(M208Write) {
EXPREGS[5] = (V & 0x1) | ((V >> 3) & 0x2); EXPREGS[5] = V;
FixMMC3PRG(MMC3_cmd); FixMMC3PRG(MMC3_cmd);
} }
@@ -61,7 +79,7 @@ static DECLFR(M208ProtRead) {
} }
static void M208Power(void) { static void M208Power(void) {
EXPREGS[5] = 3; EXPREGS[5] = 0x11;
GenMMC3Power(); GenMMC3Power();
SetWriteHandler(0x4800, 0x4fff, M208Write); SetWriteHandler(0x4800, 0x4fff, M208Write);
SetWriteHandler(0x6800, 0x6fff, M208Write); SetWriteHandler(0x6800, 0x6fff, M208Write);
@@ -73,6 +91,8 @@ static void M208Power(void) {
void Mapper208_Init(CartInfo *info) { void Mapper208_Init(CartInfo *info) {
GenMMC3_Init(info, 128, 256, 0, 0); GenMMC3_Init(info, 128, 256, 0, 0);
pwrap = M208PW; pwrap = M208PW;
mwrap = M208MW;
info->Power = M208Power; info->Power = M208Power;
AddExState(EXPREGS, 6, 0, "EXPR"); AddExState(EXPREGS, 6, 0, "EXPR");
submapper = info->submapper;
} }