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Initial commit - http://sourceforge.net/p/fceumm/code/160/

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twinaphex
2014-03-30 22:15:17 +02:00
commit 7e6caac57d
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115
src/boards/famicombox.c Normal file
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/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2009 CaH4e3
*
* 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "mapinc.h"
static uint8 regs[8];
static uint8 *WRAM = NULL;
static uint32 WRAMSIZE;
static SFORMAT StateRegs[] =
{
{ regs, 8, "REGS" },
{ 0 }
};
static void Sync(void) {
setprg2r(0x10, 0x0800, 0);
setprg2r(0x10, 0x1000, 1);
setprg2r(0x10, 0x1800, 2);
setprg8r(0x10, 0x6000, 1);
setprg16(0x8000, 0);
setprg16(0xC000, ~0);
setchr8(0);
}
//static DECLFW(SSSNROMWrite)
//{
// CartBW(A,V);
//}
static DECLFW(SSSNROMWrite) {
// FCEU_printf("write %04x %02x\n",A,V);
// regs[A&7] = V;
}
static DECLFR(SSSNROMRead) {
// FCEU_printf("read %04x\n",A);
switch (A & 7) {
case 0: return regs[0] = 0xff; // clear all exceptions
case 2: return 0xc0; // DIP selftest + freeplay
case 3: return 0x00; // 0, 1 - attract
// 2
// 4 - menu
// 8 - self check and game casette check
// 10 - lock?
// 20 - game title & count display
case 7: return 0x22; // TV type, key not turned, relay B
default: return 0;
}
}
static void SSSNROMPower(void) {
regs[0] = regs[1] = regs[2] = regs[3] = regs[4] = regs[5] = regs[6] = 0;
regs[7] = 0xff;
Sync();
memset(WRAM, 0x00, WRAMSIZE);
// SetWriteHandler(0x0000,0x1FFF,SSSNROMRamWrite);
SetReadHandler(0x0800, 0x1FFF, CartBR);
SetWriteHandler(0x0800, 0x1FFF, CartBW);
SetReadHandler(0x5000, 0x5FFF, SSSNROMRead);
SetWriteHandler(0x5000, 0x5FFF, SSSNROMWrite);
SetReadHandler(0x6000, 0x7FFF, CartBR);
SetWriteHandler(0x6000, 0x7FFF, CartBW);
SetReadHandler(0x8000, 0xFFFF, CartBR);
}
static void SSSNROMReset(void) {
regs[1] = regs[2] = regs[3] = regs[4] = regs[5] = regs[6] = 0;
}
static void SSSNROMClose(void) {
if (WRAM)
FCEU_gfree(WRAM);
WRAM = NULL;
}
static void SSSNROMIRQHook(void) {
// X6502_IRQBegin(FCEU_IQEXT);
}
static void StateRestore(int version) {
Sync();
}
void SSSNROM_Init(CartInfo *info) {
info->Reset = SSSNROMReset;
info->Power = SSSNROMPower;
info->Close = SSSNROMClose;
GameHBIRQHook = SSSNROMIRQHook;
GameStateRestore = StateRestore;
WRAMSIZE = 16384;
WRAM = (uint8*)FCEU_gmalloc(WRAMSIZE);
SetupCartPRGMapping(0x10, WRAM, WRAMSIZE, 1);
AddExState(WRAM, WRAMSIZE, 0, "WRAM");
AddExState(&StateRegs, ~0, 0, 0);
}