Fixes for COOLBOY mapper, added MINDKIDS mapper (alternative COOLBOY)
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@ -1,7 +1,7 @@
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/* FCE Ultra - NES/Famicom Emulator
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/* FCE Ultra - NES/Famicom Emulator
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*
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*
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* Copyright notice for this file:
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* Copyright notice for this file:
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* Copyright (C) 2015 CaH4e3, ClusteR
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* Copyright (C) 2018 CaH4e3, Cluster
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* it under the terms of the GNU General Public License as published by
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@ -17,15 +17,61 @@
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* along with this program; if not, write to the Free Software
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*
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* CoolBoy 400-in-1 FK23C-mimic mapper 16Mb/32Mb PROM + 128K/256K CHR RAM, optional SRAM, optional NTRAM
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* CoolBoy 400-in-1 FK23C-mimic mapper 16Mb/32Mb PROM + 128K/256K CHR RAM, optional SRAM, optional battery
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* only MMC3 mode
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* only MMC3 mode
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*
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*
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* 6000 (xx76x210) | 0xC0
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* $6000
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* 6001 (xxx354x)
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* 7 bit 0
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* 6002 = 0
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* ---- ----
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* 6003 = 0
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* ABCC DEEE
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* |||| ||||
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* |||| |+++-- PRG offset (PRG A19, A18, A17)
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* |||| +----- Alternate CHR A17
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* ||++------- PRG offset (PRG A24, A23)
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* |+--------- PRG mask (PRG A17 from 0: MMC3; 1: offset)
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* +---------- CHR mask (CHR A17 from 0: MMC3; 1: alternate)
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*
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* $6001
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*
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* 7 bit 0
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* ---- ----
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* GHIJ KKLx
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* |||| |||
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* |||| ||+--- GNROM mode bank PRG size (1: 32 KiB bank, PRG A14=CPU A14; 0: 16 KiB bank, PRG A14=offset A14)
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* |||+-++---- PRG offset (in order: PRG A20, A22, A21)
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* ||+-------- PRG mask (PRG A20 from 0: offset; 1: MMC3)
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* |+--------- PRG mask (PRG A19 from 0: offset; 1: MMC3)
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* +---------- PRG mask (PRG A18 from 0: MMC3; 1: offset)
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*
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* $6002
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* 7 bit 0
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* ---- ----
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* xxxx MMMM
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* ||||
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* ++++-- CHR offset for GNROM mode (CHR A16, A15, A14, A13)
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*
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* $6003
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* 7 bit 0
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* ---- ----
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* NPxP QQRx
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* || | |||
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* || | +++--- PRG offset for GNROM mode (PRG A16, A15, A14)
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* || +------- 1: GNROM mode; 0: MMC3 mode
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* || | (1: PRG A16...13 from QQ, L, R, CPU A14, A13 + CHR A16...10 from MMMM, PPU A12...10;
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* || | 0: PRG A16...13 from MMC3 + CHR A16...A10 from MMC3 )
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* |+-+------- Banking mode
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* |+--------- "Weird MMC3 mode"
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* +---------- Lockout (prevent further writes to these four registers, only works in MMC3 mode)
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*
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* There is also alternative version from MINDKIDS,
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* the only difference is register addresses - 500x instead of 600x
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*
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* Also some new cartridges from MINDKIDS have /WE and /OE pins connected to mapper,
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* which allows you to rewrite flash memory without soldering.
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* This also allows console to write data to the cartridge.
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* This behavior is not emulated.
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* No cart has been discovered so far that makes use of this feature, but this can be used for homebrew.
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*
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*
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* hardware tested logic, don't try to understand lol
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*/
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*/
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#include "mapinc.h"
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#include "mapinc.h"
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@ -71,12 +117,7 @@ static void COOLBOYPW(uint32 A, uint8 V) {
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// Last banks are first in this mode, ignored when MMC3_cmd&0x40
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// Last banks are first in this mode, ignored when MMC3_cmd&0x40
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if ((EXPREGS[3] & 0x40) && (V >= 0xFE) && !((MMC3_cmd & 0x40) != 0)) {
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if ((EXPREGS[3] & 0x40) && (V >= 0xFE) && !((MMC3_cmd & 0x40) != 0)) {
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switch (A & 0xE000) {
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switch (A & 0xE000) {
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case 0xA000:
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if ((MMC3_cmd & 0x40)) V = 0;
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break;
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case 0xC000:
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case 0xC000:
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if (!(MMC3_cmd & 0x40)) V = 0;
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break;
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case 0xE000:
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case 0xE000:
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V = 0;
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V = 0;
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break;
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break;
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@ -115,10 +156,6 @@ static DECLFW(COOLBOYWrite) {
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static void COOLBOYReset(void) {
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static void COOLBOYReset(void) {
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MMC3RegReset();
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MMC3RegReset();
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EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
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EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
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// EXPREGS[0] = 0;
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// EXPREGS[1] = 0x60;
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// EXPREGS[2] = 0;
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// EXPREGS[3] = 0;
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FixMMC3PRG(MMC3_cmd);
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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}
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}
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@ -126,21 +163,34 @@ static void COOLBOYReset(void) {
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static void COOLBOYPower(void) {
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static void COOLBOYPower(void) {
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GenMMC3Power();
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GenMMC3Power();
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EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
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EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
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// EXPREGS[0] = 0;
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// EXPREGS[1] = 0x60;
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// EXPREGS[2] = 0;
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// EXPREGS[3] = 0;
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FixMMC3PRG(MMC3_cmd);
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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SetWriteHandler(0x5000, 0x5fff, CartBW); // some games access random unmapped areas and crashes because of KT-008 PCB hack in MMC3 source lol
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SetWriteHandler(0x5000, 0x5fff, CartBW); // some games access random unmapped areas and crashes because of KT-008 PCB hack in MMC3 source lol
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SetWriteHandler(0x6000, 0x7fff, COOLBOYWrite);
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SetWriteHandler(0x6000, 0x6fff, COOLBOYWrite);
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}
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static void MINDKIDSPower(void) {
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GenMMC3Power();
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EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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SetWriteHandler(0x5000, 0x5fff, COOLBOYWrite);
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}
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}
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void COOLBOY_Init(CartInfo *info) {
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void COOLBOY_Init(CartInfo *info) {
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GenMMC3_Init(info, 512, 256, 8, 0);
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GenMMC3_Init(info, 2048, 256, 8, 1);
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pwrap = COOLBOYPW;
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pwrap = COOLBOYPW;
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cwrap = COOLBOYCW;
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cwrap = COOLBOYCW;
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info->Power = COOLBOYPower;
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info->Power = COOLBOYPower;
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info->Reset = COOLBOYReset;
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info->Reset = COOLBOYReset;
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AddExState(EXPREGS, 4, 0, "EXPR");
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AddExState(EXPREGS, 4, 0, "EXPR");
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}
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}
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void MINDKIDS_Init(CartInfo *info) {
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GenMMC3_Init(info, 2048, 256, 8, 1);
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pwrap = COOLBOYPW;
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cwrap = COOLBOYCW;
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info->Power = MINDKIDSPower;
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info->Reset = COOLBOYReset;
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AddExState(EXPREGS, 4, 0, "EXPR");
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}
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@ -471,6 +471,7 @@ static BMAPPING bmap[] = {
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{ "8-IN-1", BMC8IN1_Init, 0 },
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{ "8-IN-1", BMC8IN1_Init, 0 },
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{ "80013-B", BMC80013B_Init, 0 },
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{ "80013-B", BMC80013B_Init, 0 },
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{ "HPxx", BMCHPxx_Init, 0 },
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{ "HPxx", BMCHPxx_Init, 0 },
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{ "MINDKIDS", MINDKIDS_Init, BMCFLAG_256KCHRR },
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{ 0, 0, 0 }
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{ 0, 0, 0 }
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};
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};
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@ -158,6 +158,7 @@ void BMC810131C_Init(CartInfo *info);
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void BMC8IN1_Init(CartInfo *info);
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void BMC8IN1_Init(CartInfo *info);
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void BMC80013B_Init(CartInfo *info);
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void BMC80013B_Init(CartInfo *info);
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void BMCHPxx_Init(CartInfo *info);
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void BMCHPxx_Init(CartInfo *info);
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void MINDKIDS_Init(CartInfo *info);
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extern uint8 *UNIFchrrama; // Meh. So I can stop CHR RAM
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extern uint8 *UNIFchrrama; // Meh. So I can stop CHR RAM
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// bank switcherooing with certain boards...
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// bank switcherooing with certain boards...
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