Update mapper 150/243 (unif UNL-Sachen-74LS374N)
This commit is contained in:
negativeExponent
@@ -2,6 +2,7 @@
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*
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* Copyright notice for this file:
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* Copyright (C) 2002 Xodnizel
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* Copyright (C) 2020 negativeExponent
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*
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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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@@ -18,10 +19,13 @@
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/* 2020-2-3 - updated mapper 150/243 */
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#include "mapinc.h"
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static uint8 cmd, dip;
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static uint8 latch[8];
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static uint8 mapperNum;
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static void S74LS374MSync(uint8 mirr) {
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switch (mirr & 3) {
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@@ -32,7 +36,8 @@ static void S74LS374MSync(uint8 mirr) {
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}
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}
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static void S74LS374NSynco(void) {
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/* old mapper 150 and 243 */
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/* static void S74LS374NSynco(void) {
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setprg32(0x8000, latch[0]);
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setchr8(latch[1] | latch[3] | latch[4]);
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S74LS374MSync(latch[2]);
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@@ -57,7 +62,7 @@ static DECLFW(S74LS374NWrite) {
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static DECLFR(S74LS374NRead) {
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uint8 ret;
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if ((A & 0x4100) == 0x4100)
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/* ret=(X.DB&0xC0)|((~cmd)&0x3F); */
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// ret=(X.DB&0xC0)|((~cmd)&0x3F);
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ret = ((~cmd) & 0x3F) ^ dip;
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else
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ret = X.DB;
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@@ -128,7 +133,7 @@ void S74LS374NA_Init(CartInfo *info) {
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GameStateRestore = S74LS374NRestore;
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AddExState(latch, 5, 0, "LATC");
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AddExState(&cmd, 1, 0, "CMD");
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}
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}*/
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static int type;
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static void S8259Synco(void) {
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@@ -407,3 +412,84 @@ void TCA01_Init(CartInfo *info) {
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info->Power = TCA01Power;
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}
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/* ------------------ Mapper 150 --------------------- */
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/* ------------------ Mapper 243 --------------------- */
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/* Mapper 150 - SA-015 / SA-630 / Unif UNL-Sachen-74LS374N */
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/* Mapper 243 - SA-020A */
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static void S74LS374NSynco(void) {
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uint32 chrBank;
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if (mapperNum == 150)
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chrBank = (latch[6] & 3) | ((latch[4] << 2) & 4) | (latch[2] << 3);
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else
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chrBank = (latch[2] & 1) | ((latch[4] << 1) & 2) | (latch[6] << 2);
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setprg32(0x8000, (latch[2] & 1) | latch[5]);
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setchr8(chrBank);
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switch ((latch[7] >> 1) & 3) {
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case 0: setmirrorw(0, 1, 1, 1); break;
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case 1: setmirror(MI_H); break;
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case 2: setmirror(MI_V); break;
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case 3: setmirror(MI_0); break;
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}
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}
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static DECLFR(S74LS374NRead) {
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uint8 ret;
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if ((A & 0xC101) == 0x4101) {
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if (dip & 1)
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ret = (latch[cmd] & 3) | (X.DB & 0xFC);
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else
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ret = (latch[cmd] & 7) | (X.DB & 0xF8);
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} else {
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ret = X.DB;
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}
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return ret;
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}
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static DECLFW(S74LS374NWrite) {
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if (dip & 1)
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V |= 4;
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switch (A & 0xC101) {
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case 0x4100:
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cmd = V & 7;
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break;
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case 0x4101:
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latch[cmd] = V & 7;
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S74LS374NSynco();
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break;
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}
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}
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static void S74LS374NRestore(int version) {
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S74LS374NSynco();
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}
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static void S74LS374NReset(void) {
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dip ^= 1;
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latch[0] = latch[1] = latch[2] = latch[3] = 0;
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latch[4] = latch[5] = latch[6] = latch[7] = 0;
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S74LS374NSynco();
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}
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static void S74LS374NPower(void) {
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dip = 0;
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latch[0] = latch[1] = latch[2] = latch[3] = 0;
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latch[4] = latch[5] = latch[6] = latch[7] = 0;
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S74LS374NSynco();
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SetReadHandler(0x8000, 0xFFFF, CartBR);
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SetWriteHandler(0x4100, 0x7FFF, S74LS374NWrite);
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if (mapperNum == 150)
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SetReadHandler(0x4100, 0x7FFF, S74LS374NRead);
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}
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void S74LS374N_Init(CartInfo *info) {
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mapperNum = info->mapper;
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info->Power = S74LS374NPower;
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info->Reset = S74LS374NReset;
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GameStateRestore = S74LS374NRestore;
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AddExState(latch, 8, 0, "LATC");
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AddExState(&cmd, 1, 0, "CMD");
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}
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@@ -545,7 +545,7 @@ static BMAPPINGLocal bmap[] = {
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{(uint8_t*)"TCU01", 147, TCU01_Init},
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{(uint8_t*)"SA0037", 148, SA0037_Init},
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{(uint8_t*)"SA0036", 149, SA0036_Init},
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{(uint8_t*)"S74LS374N", 150, S74LS374N_Init},
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{(uint8_t*)"SA-015/SA-630", 150, S74LS374N_Init},
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{(uint8_t*)"", 151, Mapper151_Init},
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{(uint8_t*)"", 152, Mapper152_Init},
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{(uint8_t*)"BANDAI SRAM", 153, Mapper153_Init}, /* Bandai board 16 with SRAM instead of EEPROM */
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@@ -638,7 +638,7 @@ static BMAPPINGLocal bmap[] = {
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{(uint8_t*)"", 240, Mapper240_Init},
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{(uint8_t*)"", 241, Mapper241_Init},
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{(uint8_t*)"", 242, Mapper242_Init},
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{(uint8_t*)"S74LS374NA", 243, S74LS374NA_Init},
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{(uint8_t*)"SA-020A", 243, S74LS374N_Init},
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{(uint8_t*)"DECATHLON", 244, Mapper244_Init},
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{(uint8_t*)"", 245, Mapper245_Init},
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{(uint8_t*)"FONG SHEN BANG", 246, Mapper246_Init},
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@@ -520,7 +520,7 @@ static BMAPPING bmap[] = {
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{ "SSS-NROM-256", NO_INES, SSSNROM_Init, 0 },
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{ "SUNSOFT_UNROM", 93, SUNSOFT_UNROM_Init, 0 }, /* fix me, real pcb name, real pcb type */
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{ "Sachen-74LS374N", 150, S74LS374N_Init, 0 },
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{ "Sachen-74LS374NA", 243, S74LS374NA_Init, 0 }, /* seems to be custom mapper */
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{ "Sachen-74LS374NA", 243, S74LS374N_Init, 0 }, /* seems to be custom mapper */
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{ "Sachen-8259A", 141, S8259A_Init, 0 },
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{ "Sachen-8259B", 138, S8259B_Init, 0 },
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{ "Sachen-8259C", 139, S8259C_Init, 0 },
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