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Add mapper 581.

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NewRisingSun
2025-09-08 18:15:39 +02:00
parent 4c697c7909
commit 92b64e5e06
4 changed files with 56 additions and 3 deletions
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6
src/boards/579.c
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@@ -39,11 +39,11 @@ static void sync () {
setmirror(Latch_address &0x02? MI_H: MI_V);
}
void protectLatchBits (uint16 *address, uint8 *newValue, uint8 romValue) { /* Once bit 9 is set, only the inner bank bits can be modified. */
if (Latch_address &0x200) *address = *address &0x01C | Latch_address &~0x01C;
static void trapLatchWrite (uint16 *newAddress, uint8 *newValue, uint8 romValue) { /* Once bit 9 is set, only the inner bank bits can be modified. */
if (Latch_address &0x200) *newAddress = *newAddress &0x01C | Latch_address &~0x01C;
}
void Mapper579_Init (CartInfo *info) {
Latch_init(info, sync, 0x8000, 0xFFFF, protectLatchBits);
Latch_init(info, sync, 0x8000, 0xFFFF, trapLatchWrite);
info->Reset = Latch_power;
}

51
src/boards/581.c Normal file
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@@ -0,0 +1,51 @@
/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2025 NewRisingSun
*
* 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"
#include "asic_latch.h"
static void sync () {
int prg = Latch_address >>1 &0x20 | Latch_address &0x1F;
if (Latch_address &0x20) {
if (Latch_address &0x01) {
setprg16(0x8000, prg);
setprg16(0xC000, prg);
} else
setprg32(0x8000, prg >>1);
} else {
setprg16(0x8000, prg);
setprg16(0xC000, prg |7);
}
SetupCartCHRMapping(0, CHRptr[0], CHRsize[0], Latch_address &0x20? 0: 1);
setchr8(0);
setmirror(Latch_address &0x80? MI_H: MI_V);
}
static void trapLatchWrite (uint16 *newAddress, uint8 *newValue, uint8 romValue) { /* The upper bits are only writable on a falling edge of A5. */
if (Latch_address &0x20 && !(*newAddress &0x20))
;
else
*newAddress = *newAddress &~0xC0 | Latch_address &0xC0;
}
void Mapper581_Init (CartInfo *info) {
Latch_init(info, sync, 0x8000, 0xFFFF, trapLatchWrite);
info->Reset = Latch_power;
}

1
src/ines.c
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@@ -949,6 +949,7 @@ INES_BOARD_BEGIN()
INES_BOARD( "Venus Turbo Game Doctor", 562, Mapper561_562_Init )
INES_BOARD( "J-2020", 563, Mapper563_Init )
INES_BOARD( "T-215", 579, Mapper579_Init )
INES_BOARD( "ET-82", 581, Mapper581_Init )
INES_BOARD( "HN-02", 586, Mapper586_Init )
INES_BOARD( "ET-81", 588, Mapper588_Init )
INES_BOARD( "810430", 590, Mapper590_Init )

1
src/ines.h
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@@ -414,6 +414,7 @@ void Mapper559_Init(CartInfo *);
void Mapper561_562_Init(CartInfo *);
void Mapper563_Init(CartInfo *);
void Mapper579_Init(CartInfo *);
void Mapper581_Init(CartInfo *);
void Mapper586_Init(CartInfo *);
void Mapper588_Init(CartInfo *);
void Mapper590_Init(CartInfo *);