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-added support for mappers 80, 82 and 207
-clearing prg ram on first creation so theres no random garbage in new saves
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,182 @@ | ||
| /* | ||
| * Copyright (C) 2019 FIX94 | ||
| * | ||
| * This software may be modified and distributed under the terms | ||
| * of the MIT license. See the LICENSE file for details. | ||
| */ | ||
|
|
||
| #include <stdio.h> | ||
| #include <inttypes.h> | ||
| #include <stdbool.h> | ||
| #include <string.h> | ||
| #include "../ppu.h" | ||
| #include "../mapper.h" | ||
| #include "../mem.h" | ||
| #include "../mapper_h/common.h" | ||
|
|
||
| static struct { | ||
| bool usesPrgRAM; | ||
| bool prgRAMenabled; | ||
| uint8_t *prgRAM; | ||
| } m80; | ||
|
|
||
| void m80init(uint8_t *prgROMin, uint32_t prgROMsizeIn, | ||
| uint8_t *prgRAMin, uint32_t prgRAMsizeIn, | ||
| uint8_t *chrROMin, uint32_t chrROMsizeIn) | ||
| { | ||
| prg8init(prgROMin, prgROMsizeIn); | ||
| prg8setBank3(prgROMsizeIn - 0x2000); | ||
| if(prgRAMin && prgRAMsizeIn) | ||
| { | ||
| m80.prgRAM = prgRAMin; | ||
| m80.usesPrgRAM = true; | ||
| } | ||
| else | ||
| m80.usesPrgRAM = true; | ||
| m80.prgRAMenabled = false; | ||
| chr1init(chrROMin, chrROMsizeIn); | ||
| printf("Taito X1-005 inited\n"); | ||
| } | ||
|
|
||
| static uint16_t m207nt0, m207nt1; | ||
| void m207init(uint8_t *prgROMin, uint32_t prgROMsizeIn, | ||
| uint8_t *prgRAMin, uint32_t prgRAMsizeIn, | ||
| uint8_t *chrROMin, uint32_t chrROMsizeIn) | ||
| { | ||
| m80init(prgROMin,prgROMsizeIn,prgRAMin,prgRAMsizeIn,chrROMin,chrROMsizeIn); | ||
| //some extra regs | ||
| m207nt0 = 0, m207nt1 = 0; | ||
| ppuSetNameTblCustom(m207nt0,m207nt0,m207nt1,m207nt1); | ||
| } | ||
|
|
||
| extern uint8_t memLastVal; | ||
| static uint8_t m80prgRAMget8(uint16_t addr) | ||
| { | ||
| if(m80.usesPrgRAM && m80.prgRAMenabled) | ||
| return m80.prgRAM[addr&0x7F]; | ||
| return memLastVal; //aka open bus | ||
| } | ||
|
|
||
| void m80initGet8(uint16_t addr) | ||
| { | ||
| if(addr >= 0x7F00 && addr < 0x8000) | ||
| memInitMapperGetPointer(addr, m80prgRAMget8); | ||
| else | ||
| prg8initGet8(addr); | ||
| } | ||
|
|
||
| static void m80setParams7EF0(uint16_t addr, uint8_t val) | ||
| { | ||
| (void)addr; | ||
| chr1setBank0((val&0xFE)<<10); | ||
| chr1setBank1((val|0x01)<<10); | ||
| } | ||
|
|
||
| static void m80setParams7EF1(uint16_t addr, uint8_t val) | ||
| { | ||
| (void)addr; | ||
| chr1setBank2((val&0xFE)<<10); | ||
| chr1setBank3((val|0x01)<<10); | ||
| } | ||
|
|
||
| static void m80setParams7EF2(uint16_t addr, uint8_t val) { (void)addr; chr1setBank4(val<<10); } | ||
| static void m80setParams7EF3(uint16_t addr, uint8_t val) { (void)addr; chr1setBank5(val<<10); } | ||
| static void m80setParams7EF4(uint16_t addr, uint8_t val) { (void)addr; chr1setBank6(val<<10); } | ||
| static void m80setParams7EF5(uint16_t addr, uint8_t val) { (void)addr; chr1setBank7(val<<10); } | ||
|
|
||
| static void m80setParams7EF6(uint16_t addr, uint8_t val) | ||
| { | ||
| (void)addr; | ||
| if(!ppu4Screen) | ||
| { | ||
| if(val&1) | ||
| { | ||
| //printf("Vertical mode\n"); | ||
| ppuSetNameTblVertical(); | ||
| } | ||
| else | ||
| { | ||
| //printf("Horizontal mode\n"); | ||
| ppuSetNameTblHorizontal(); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| static void m80setParams7EF8(uint16_t addr, uint8_t val) { (void)addr; m80.prgRAMenabled = (val == 0xA3); } | ||
|
|
||
| static void m80setParams7EFA(uint16_t addr, uint8_t val) { (void)addr; prg8setBank0(val<<13); } | ||
| static void m80setParams7EFC(uint16_t addr, uint8_t val) { (void)addr; prg8setBank1(val<<13); } | ||
| static void m80setParams7EFE(uint16_t addr, uint8_t val) { (void)addr; prg8setBank2(val<<13); } | ||
|
|
||
| static void m80prgRAMset8(uint16_t addr, uint8_t val) { if(m80.usesPrgRAM && m80.prgRAMenabled) m80.prgRAM[addr&0x7F] = val; } | ||
|
|
||
| void m80initSet8(uint16_t addr) | ||
| { | ||
| if(addr >= 0x7EF0 && addr < 0x7F00) | ||
| { | ||
| switch(addr&0xF) | ||
| { | ||
| case 0: | ||
| memInitMapperSetPointer(addr, m80setParams7EF0); | ||
| break; | ||
| case 1: | ||
| memInitMapperSetPointer(addr, m80setParams7EF1); | ||
| break; | ||
| case 2: | ||
| memInitMapperSetPointer(addr, m80setParams7EF2); | ||
| break; | ||
| case 3: | ||
| memInitMapperSetPointer(addr, m80setParams7EF3); | ||
| break; | ||
| case 4: | ||
| memInitMapperSetPointer(addr, m80setParams7EF4); | ||
| break; | ||
| case 5: | ||
| memInitMapperSetPointer(addr, m80setParams7EF5); | ||
| break; | ||
| case 6: case 7: | ||
| memInitMapperSetPointer(addr, m80setParams7EF6); | ||
| break; | ||
| case 8: case 9: | ||
| memInitMapperSetPointer(addr, m80setParams7EF8); | ||
| break; | ||
| case 0xA: case 0xB: | ||
| memInitMapperSetPointer(addr, m80setParams7EFA); | ||
| break; | ||
| case 0xC: case 0xD: | ||
| memInitMapperSetPointer(addr, m80setParams7EFC); | ||
| break; | ||
| case 0xE: case 0xF: | ||
| memInitMapperSetPointer(addr, m80setParams7EFE); | ||
| break; | ||
| } | ||
| } | ||
| else if(addr >= 0x7F00 && addr < 0x8000) | ||
| memInitMapperSetPointer(addr, m80prgRAMset8); | ||
| } | ||
|
|
||
| static void m207setParams7EF0(uint16_t addr, uint8_t val) | ||
| { | ||
| (void)addr; | ||
| m207nt0 = (val&0x80) ? 0x400 : 0; | ||
| ppuSetNameTblCustom(m207nt0,m207nt0,m207nt1,m207nt1); | ||
| m80setParams7EF0(addr, val&0x7F); | ||
| } | ||
|
|
||
| static void m207setParams7EF1(uint16_t addr, uint8_t val) | ||
| { | ||
| (void)addr; | ||
| m207nt1 = (val&0x80) ? 0x400 : 0; | ||
| ppuSetNameTblCustom(m207nt0,m207nt0,m207nt1,m207nt1); | ||
| m80setParams7EF1(addr, val&0x7F); | ||
| } | ||
|
|
||
| void m207initSet8(uint16_t addr) | ||
| { | ||
| if(addr == 0x7EF0) | ||
| memInitMapperSetPointer(addr, m207setParams7EF0); | ||
| else if(addr == 0x7EF1) | ||
| memInitMapperSetPointer(addr, m207setParams7EF1); | ||
| else if(addr != 0x7EF6 && addr != 0x7EF7) | ||
| m80initSet8(addr); | ||
| } |
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