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

Backport r174 - UNIF BMC-10-24-C-A1 - new dump 6-in-1 by ClusteR

Browse Source
This commit is contained in:
Oggom
2015-07-12 01:06:14 +02:00
parent 204f62767c
commit 1d33799c0c
7 changed files with 180 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

106
src/boards/coolboy.c
View File

@@ -1,7 +1,7 @@
/* FCE Ultra - NES/Famicom Emulator
/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2015 CaH4e3
* Copyright (C) 2015 CaH4e3, ClusteR
*
* 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
@@ -20,67 +20,95 @@
* CoolBoy 400-in-1 FK23C-mimic mapper 16Mb/32Mb PROM + 128K/256K CHR RAM, optional SRAM, optional NTRAM
* only MMC3 mode
*
* 6000 (õõ76x210) | 0õÑ0
* 6001 (õõõ354õõ)
* 6000 (xx76x210) | 0xC0
* 6001 (xxx354x)
* 6002 = 0
* 6003 = 0
*
* hardware tested logic, don't try to understand lol
*/
#include "mapinc.h"
#include "mmc3.h"
static void COOLBOYCW(uint32 A, uint8 V) {
if(EXPREGS[3] & 0x10)
setchr8(EXPREGS[2] & 0xF);
else {
uint32 mask = 0xFF;
switch(EXPREGS[0] & 0xC0) {
case 0xC0:
mask = 0x7F;
break;
uint32 mask = 0xFF ^ (EXPREGS[0] & 0x80);
if (EXPREGS[3] & 0x10) {
if (EXPREGS[3] & 0x40) { // Weird mode
int cbase = (MMC3_cmd & 0x80) << 5;
switch (cbase ^ A) { // Don't even try do understand
case 0x0400:
case 0x0C00: V &= 0x7F; break;
}
}
setchr1(A, V & mask);
setchr8((((EXPREGS[2] & 0x0F) | ((V & 0x80) >> 3)) & (mask >> 3)) | ((((EXPREGS[0] & 0x08) << 4) & ~mask) >> 3));
} else {
if (EXPREGS[3] & 0x40) { // Weird mode, again
int cbase = (MMC3_cmd & 0x80) << 5;
switch (cbase ^ A) { // Don't even try do understand
case 0x0000: V = DRegBuf[0]; break;
case 0x0800: V = DRegBuf[1]; break;
case 0x0400:
case 0x0C00: V = 0; break;
}
}
setchr1(A, (V & mask) | (((EXPREGS[0] & 0x08) << 4) & (mask ^ 0xff)));
}
}
static void COOLBOYPW(uint32 A, uint8 V) {
uint32 mask = 0x3F;
uint32 mask = ((0x3F | (EXPREGS[1] & 0x40) | ((EXPREGS[1] & 0x20) << 2)) ^ ((EXPREGS[0] & 0x40) >> 2)) ^ ((EXPREGS[1] & 0x80) >> 2);
uint32 base = ((EXPREGS[0] & 0x07) >> 0) | ((EXPREGS[1] & 0x10) >> 1) | ((EXPREGS[1] & 0x0C) << 2) | ((EXPREGS[0] & 0x30) << 2);
switch(EXPREGS[0] & 0xC0) {
case 0x80:
mask = 0x1F;
break;
case 0xC0:
if(EXPREGS[3] & 0x10) {
mask = 0x01 | (EXPREGS[1] & 2);
} else {
mask = 0x0F;
// Very weird mode
// Last banks are first in this mode, ignored when MMC3_cmd&0x40
if ((EXPREGS[3] & 0x40) && (V >= 0xFE) && !((MMC3_cmd & 0x40) != 0)) {
switch (A & 0xE000) {
case 0xA000:
if ((MMC3_cmd & 0x40) != 0) V = 0;
break;
case 0xC000:
if ((MMC3_cmd & 0x40) == 0) V = 0;
break;
case 0xE000:
V = 0;
break;
}
break;
}
if(EXPREGS[3] & 0x10)
setprg8(A, (base << 4) | (V & mask) | ((EXPREGS[3] & (0x0E ^ (EXPREGS[1] & 2))) ));
else
setprg8(A, (base << 4) | (V & mask));
// Regular MMC3 mode, internal ROM size can be up to 2048kb! Minimal is 64kb
if (!(EXPREGS[3] & 0x10))
setprg8(A, (((base << 4) & ~mask)) | (V & mask));
else { // NROM mode
mask &= 0xF0;
uint8 emask;
if (!(EXPREGS[1] & 2)) // 4kb mode, 0xC000-0xFFFF is same as 0x8000-0xBFFF
emask = EXPREGS[3] & 0x0E;
else // 8kb mode, using second-last bank
emask = (EXPREGS[3] & 0x0C) | ((A >= 0xC000) ? 2 : 0);
emask |= (A >> 13) & 1; // does not depends on MMC3_cmd&0x40
setprg8(A, (((base << 4) & ~mask) | (V & mask) | emask));
}
}
static DECLFW(COOLBOYWrite) {
if(A001B & 0x80)
CartBW(A,V);
else
if((EXPREGS[3] & 0x80) == 0) {
EXPREGS[A & 3] = V;
FixMMC3PRG(MMC3_cmd);
FixMMC3CHR(MMC3_cmd);
uint32 base = ((EXPREGS[0] & 0x07) >> 0) | ((EXPREGS[1] & 0x10) >> 1) | ((EXPREGS[1] & 0x0C) << 2) | ((EXPREGS[0] & 0x30) << 2);
FCEU_printf("exp %02x %02x (base %03d)\n",A,V,base);
}
if((EXPREGS[3] & 0x80) == 0) {
EXPREGS[A & 3] = V;
FixMMC3PRG(MMC3_cmd);
FixMMC3CHR(MMC3_cmd);
}
}
static void COOLBOYReset(void) {
MMC3RegReset();
EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
// EXPREGS[0] = 0;
// EXPREGS[1] = 0x60;
// EXPREGS[2] = 0;
// EXPREGS[3] = 0;
FixMMC3PRG(MMC3_cmd);
FixMMC3CHR(MMC3_cmd);
}
@@ -88,6 +116,10 @@ static void COOLBOYReset(void) {
static void COOLBOYPower(void) {
GenMMC3Power();
EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
// EXPREGS[0] = 0;
// EXPREGS[1] = 0x60;
// EXPREGS[2] = 0;
// EXPREGS[3] = 0;
FixMMC3PRG(MMC3_cmd);
FixMMC3CHR(MMC3_cmd);
SetWriteHandler(0x5000, 0x5fff, CartBW); // some games access random unmapped areas and crashes because of KT-008 PCB hack in MMC3 source lol
@@ -95,7 +127,7 @@ static void COOLBOYPower(void) {
}
void COOLBOY_Init(CartInfo *info) {
GenMMC3_Init(info, 512, 128, 8, 0);
GenMMC3_Init(info, 512, 256, 8, 0);
pwrap = COOLBOYPW;
cwrap = COOLBOYCW;
info->Power = COOLBOYPower;