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Update BMC-RESET-TXROM (m313)

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- add support for submappers 1, 2, 3 and 4
This commit is contained in:
negativeExponent
2020-01-28 21:40:48 +08:00
parent 0635e047b2
commit 38305957f7
1 changed files with 30 additions and 4 deletions
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34
src/boards/resettxrom.c
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@@ -2,6 +2,7 @@
*
* Copyright notice for this file:
* Copyright (C) 2019 Libretro Team
* Copyright (C) 2020 negativeExponent
*
* 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
@@ -27,12 +28,35 @@
#include "mapinc.h"
#include "mmc3.h"
static uint8 submapper;
static void M313CW(uint32 A, uint8 V) {
setchr1(A, (EXPREGS[0] << 7) | (V & 0x7F));
/*FCEU_printf("CHR: A:%04x V:%02x 0:%02x\n", A, V, EXPREGS[0]);*/
switch (submapper) {
case 0: V = (EXPREGS[0] << 7) | (V & 0x7F); break;
case 1: V = (EXPREGS[0] << 7) | (V & 0x7F); break;
case 2: V = (EXPREGS[0] << 8) | (V & 0xFF); break;
case 3: V = (EXPREGS[0] << 8) | (V & 0xFF); break;
case 4: V = (EXPREGS[0] << 7) | (V & 0x7F); break;
}
setchr1(A, V);
}
static void M313PW(uint32 A, uint8 V) {
setprg8(A, (EXPREGS[0] << 4) | (V & 0x0F));
/*FCEU_printf("PRG: A:%04x V:%02x 0:%02x\n", A, V, EXPREGS[0]);*/
switch (submapper) {
case 0: V = (EXPREGS[0] << 4) | (V & 0x0F); break;
case 1: V = (EXPREGS[0] << 5) | (V & 0x1F); break;
case 2: V = (EXPREGS[0] << 4) | (V & 0x0F); break;
case 3: V = (EXPREGS[0] << 5) | (V & 0x1F); break;
case 4:
if (EXPREGS[0] == 0)
V = (EXPREGS[0] << 5) | (V & 0x1F);
else
V = (EXPREGS[0] << 4) | (V & 0x0F);
break;
}
setprg8(A, V);
}
static void M313Reset(void) {
@@ -48,10 +72,12 @@ static void M313Power(void) {
/* NES 2.0 313, UNIF BMC-RESET-TXROM */
void BMCRESETTXROM_Init(CartInfo *info) {
GenMMC3_Init(info, 128, 128, 0, 0);
GenMMC3_Init(info, 256, 256, 8, 0);
cwrap = M313CW;
pwrap = M313PW;
submapper = info->submapper;
info->Power = M313Power;
info->Reset = M313Reset;
AddExState(EXPREGS, 1, 0, "EXPR");
AddExState(&EXPREGS[0], 1, 0, "EXPR");
AddExState(&submapper, 1, 0, "SUBM");
}