005eb7bdc3
- Added a few mappers to the list. Tested with roms from goodnes set and some demos - Fix IRQ for Kaiser7032/202 - Issue noticeable with SMB2/3's status status bar
75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
/* FCEUmm - NES/Famicom Emulator
|
|
*
|
|
* Copyright (C) 2019 Libretro Team
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/* added 2019-5-23
|
|
* BMC-WS Used for Super 40-in-1 multicart
|
|
* https://wiki.nesdev.com/w/index.php/NES_2.0_Mapper_332 */
|
|
|
|
#include "mapinc.h"
|
|
|
|
static uint8 preg, creg;
|
|
|
|
static SFORMAT StateRegs[] =
|
|
{
|
|
{ &preg, 1, "PREG" },
|
|
{ &creg, 1, "CREG" },
|
|
{ 0 }
|
|
};
|
|
|
|
static void Sync(void) {
|
|
if (preg & 8) {
|
|
setprg16(0x8000, preg & 7);
|
|
setprg16(0xc000, preg & 7);
|
|
}
|
|
else
|
|
setprg32(0x8000, (preg & 6) >> 1);
|
|
setchr8(creg);
|
|
setmirror(((preg >> 4) & 1) ^ 1);
|
|
}
|
|
|
|
static DECLFW(BMCWSWrite) {
|
|
if (preg & 0x20)
|
|
return;
|
|
|
|
switch (A & 1) {
|
|
case 0: preg = V; Sync(); break;
|
|
case 1: creg = V; Sync(); break;
|
|
}
|
|
}
|
|
|
|
static void MBMCWSPower(void) {
|
|
Sync();
|
|
SetReadHandler(0x8000, 0xFFFF, CartBR);
|
|
SetWriteHandler(0x6000, 0x6001, BMCWSWrite);
|
|
}
|
|
|
|
static void BMCWSReset(void) {
|
|
}
|
|
|
|
static void StateRestore(int version) {
|
|
Sync();
|
|
}
|
|
|
|
void BMCWS_Init(CartInfo *info) {
|
|
info->Reset = BMCWSReset;
|
|
info->Power = MBMCWSPower;
|
|
GameStateRestore = StateRestore;
|
|
AddExState(&StateRegs, ~0, 0, 0);
|
|
}
|