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Mapper 226: Updated and remove duplicate mapper

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- Updated mapper 226 to support 1.5mb carts, which in turn makes Unif Ghostbusters63n1 a duplicate.
- Unif 42in1ResetSwitch switch to mapper 233
This commit is contained in:
retro-wertz
2019-07-12 23:35:11 +08:00
parent 748f27571d
commit ec19b07b4d
5 changed files with 43 additions and 104 deletions
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31
src/boards/bmc42in1r.c
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@@ -3,6 +3,7 @@
* Copyright notice for this file:
* Copyright (C) 2005 CaH4e3
* Copyright (C) 2009 qeed
* 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
@@ -22,10 +23,18 @@
*
*/
/* Updated 2019-07-12
* Mapper 266 - Updated and combine UNIF Ghostbusters63in1 board (1.5 MB carts), different bank order
* - some 1MB carts can switch game lists using Select
* Mapper 233 - UNIF 42in1ResetSwitch - reset-based switching
*/
#include "mapinc.h"
static uint8 reorder_banks = 0;
static uint8 isresetbased = 0;
static uint8 latche[2], reset;
static uint8 banks[4] = { 0, 0, 1, 2 };
static SFORMAT StateRegs[] =
{
{ &reset, 1, "RST" },
@@ -34,11 +43,17 @@ static SFORMAT StateRegs[] =
};
static void Sync(void) {
uint8 bank;
uint8 bank = 0;
uint8 base = ((latche[0] & 0x80) >> 7) | ((latche[1] & 1) << 1);
if (isresetbased)
bank = (latche[0] & 0x1f) | (reset << 5) | ((latche[1] & 1) << 6);
else
bank = (latche[0] & 0x1f) | ((latche[0] & 0x80) >> 2) | ((latche[1] & 1) << 6);
else {
if (reorder_banks) /* for 1536 KB prg roms */
base = banks[base];
bank = (base << 5) | (latche[0] & 0x1f);
}
if (!(latche[0] & 0x20))
setprg32(0x8000, bank >> 1);
else {
@@ -65,19 +80,29 @@ static void StateRestore(int version) {
Sync();
}
static void M226Reset(void) {
latche[0] = latche[1] = reset = 0;
Sync();
}
void Mapper226_Init(CartInfo *info) {
isresetbased = 0;
/* 1536KiB PRG roms have different bank order */
reorder_banks = ((info->prgRom * 16) == 1536) ? 1 : 0;
info->Power = M226Power;
info->Reset = M226Reset;
AddExState(&StateRegs, ~0, 0, 0);
GameStateRestore = StateRestore;
}
static void M233Reset(void) {
latche[0] = latche[1] = 0;
reset ^= 1;
Sync();
}
void Mapper233_Init(CartInfo *info) {
reorder_banks = 0;
isresetbased = 1;
info->Power = M226Power;
info->Reset = M233Reset;