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Merge pull request #191 from rzumer/gbc_memory_map 

Fix libretro GBC memory map and add IO port range for cheevos
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Lior Halphon 2019-07-20 00:04:36 +03:00 committed by GitHub
parent d2e9025be6 1a263a3acc
commit 17793ef361
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 41 additions and 33 deletions
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74
libretro/libretro.c
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@ -380,7 +380,7 @@ static void init_for_current_model(unsigned id)
set_link_cable_state(true);
}
struct retro_memory_descriptor descs[10];
struct retro_memory_descriptor descs[11];
size_t size;
uint16_t bank;
@ -389,47 +389,55 @@ static void init_for_current_model(unsigned id)
i = 0;
memset(descs, 0, sizeof(descs));
descs[0].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_IE, &size, &bank);
descs[0].start = 0xFFFF;
descs[0].len = 1;
descs[0].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_IE, &size, &bank);
descs[0].start = 0xFFFF;
descs[0].len = 1;
descs[1].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_HRAM, &size, &bank);
descs[1].start = 0xFF80;
descs[1].len = 0x0080;
descs[1].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_HRAM, &size, &bank);
descs[1].start = 0xFF80;
descs[1].len = 0x0080;
descs[2].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_RAM, &size, &bank);
descs[2].start = 0xC000;
descs[2].len = 0x1000;
descs[2].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_RAM, &size, &bank);
descs[2].start = 0xC000;
descs[2].len = 0x1000;
descs[3].ptr = descs[2].ptr + 0x1000; /* GB RAM/GBC RAM bank 1 */
descs[3].start = 0xD000;
descs[3].len = 0x1000;
descs[3].ptr = descs[2].ptr + 0x1000; /* GB RAM/GBC RAM bank 1 */
descs[3].start = 0xD000;
descs[3].len = 0x1000;
descs[4].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_CART_RAM, &size, &bank);
descs[4].start = 0xA000;
descs[4].len = 0x2000;
descs[4].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_CART_RAM, &size, &bank);
descs[4].start = 0xA000;
descs[4].len = 0x2000;
descs[5].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_VRAM, &size, &bank);
descs[5].start = 0x8000;
descs[5].len = 0x2000;
descs[5].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_VRAM, &size, &bank);
descs[5].start = 0x8000;
descs[5].len = 0x2000;
descs[6].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_ROM, &size, &bank);
descs[6].start = 0x0000;
descs[6].len = 0x4000;
descs[6].flags = RETRO_MEMDESC_CONST;
descs[6].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_ROM, &size, &bank);
descs[6].start = 0x0000;
descs[6].len = 0x4000;
descs[6].flags = RETRO_MEMDESC_CONST;
descs[7].ptr = descs[6].ptr + (bank * 0x4000);
descs[7].start = 0x4000;
descs[7].len = 0x4000;
descs[7].flags = RETRO_MEMDESC_CONST;
descs[7].ptr = descs[6].ptr + (bank * 0x4000);
descs[7].start = 0x4000;
descs[7].len = 0x4000;
descs[7].flags = RETRO_MEMDESC_CONST;
descs[8].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_OAM, &size, &bank);
descs[8].start = 0xFE00;
descs[8].len = 0x00A0;
descs[8].ptr = GB_get_direct_access(&gameboy[i], GB_DIRECT_ACCESS_OAM, &size, &bank);
descs[8].start = 0xFE00;
descs[8].select = 0xFFFFFF00;
descs[8].len = 0x00A0;
descs[9].ptr = descs[2].ptr + 0x2000; /* GBC RAM bank 2 */
descs[9].start = 0x10000;
descs[9].len = GB_is_cgb(&gameboy[i]) ? 0x6000 : 0; /* 0x1000 per bank (2-7), unmapped on GB */
descs[9].ptr = descs[2].ptr + 0x2000; /* GBC RAM bank 2 */
descs[9].start = 0x10000;
descs[9].select = 0xFFFF0000;
descs[9].len = GB_is_cgb(&gameboy[i]) ? 0x6000 : 0; /* 0x1000 per bank (2-7), unmapped on GB */
descs[10].ptr = descs[8].ptr;
descs[10].offset = 0x100;
descs[10].start = 0xFF00;
descs[10].select = 0xFFFFFF00;
descs[10].len = 0x0080;
struct retro_memory_map mmaps;
mmaps.descriptors = descs;