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

UNL-EH8813A: Update based on latest wiki

Browse Source
This commit is contained in:
retro-wertz
2019-06-27 00:56:24 +08:00
parent e734fa8796
commit fa21e91ef5
2 changed files with 18 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
src/boards/ax40g.c
View File

@@ -1,6 +1,7 @@
/* FCEUmm - NES/Famicom Emulator /* FCEUmm - NES/Famicom Emulator
* *
* Copyright notice for this file: * Copyright notice for this file:
* Copyright (C) 2019 Libretro Team
* *
* This program is free software; you can redistribute it and/or modify * 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 * it under the terms of the GNU General Public License as published by

30
src/boards/eh8813a.c
View File

@@ -18,36 +18,40 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/ */
/* Updated 6-27-19 */
#include "mapinc.h" #include "mapinc.h"
static uint16 addrlatch; static uint8 datalatch, addrlatch, lock, hw_mode;
static uint8 datalatch, hw_mode;
static SFORMAT StateRegs[] = static SFORMAT StateRegs[] =
{ {
{ &addrlatch, 2, "ADRL" }, { &addrlatch, 1, "ADRL" },
{ &datalatch, 1, "DATL" }, { &datalatch, 1, "DATL" },
{ &hw_mode, 1, "HWMO" }, { &hw_mode, 1, "HWMO" },
{ &lock, 1, "LOCK" },
{ 0 } { 0 }
}; };
static void Sync(void) { static void Sync(void) {
uint8 prg = (addrlatch & 7); uint8 prg = (addrlatch & 0x3F);
setchr8(datalatch); setchr8(datalatch);
if(addrlatch & 0x80) { if (addrlatch & 0x80) {
setprg16(0x8000,prg); setprg16(0x8000,prg);
setprg16(0xC000,prg); setprg16(0xC000,prg);
} else { } else {
setprg32(0x8000,prg >> 1); setprg32(0x8000,prg >> 1);
} }
setmirror(MI_V); setmirror(((datalatch >> 7) & 1) ^ 1);
} }
static DECLFW(EH8813AWrite) { static DECLFW(EH8813AWrite) {
if((addrlatch & 0x100) == 0) { if (lock == 0) {
addrlatch = A & 0x1FF; addrlatch = A & 0xFF;
datalatch = V & 0xF; datalatch = V & 0xFC;
lock = (A & 0x100) >> 8;
} }
datalatch = (datalatch & ~0x03) | (V & 0x03);
Sync(); Sync();
} }
@@ -56,16 +60,16 @@ static DECLFR(EH8813ARead) {
A= (A & 0xFFF0) + hw_mode; A= (A & 0xFFF0) + hw_mode;
return CartBR(A); return CartBR(A);
} }
static void EH8813APower(void) { static void EH8813APower(void) {
addrlatch = datalatch = hw_mode = 0; addrlatch = datalatch = hw_mode = lock = 0;
Sync(); Sync();
SetReadHandler(0x8000, 0xFFFF, EH8813ARead); SetReadHandler(0x8000, 0xFFFF, EH8813ARead);
SetWriteHandler(0x8000, 0xFFFF, EH8813AWrite); SetWriteHandler(0x8000, 0xFFFF, EH8813AWrite);
} }
static void EH8813AReset(void) { static void EH8813AReset(void) {
addrlatch = datalatch = 0; addrlatch = datalatch = lock = 0;
hw_mode = (hw_mode + 1) & 0xF; hw_mode = (hw_mode + 1) & 0xF;
FCEU_printf("Hardware Switch is %01X\n", hw_mode); FCEU_printf("Hardware Switch is %01X\n", hw_mode);
Sync(); Sync();