mirror of
https://github.com/RaySollium99/picodrive.git
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lowercasing filenames, part1; makefile adjustments
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@574 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz
parent
6a13ef3f56
commit
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82 changed files with 240 additions and 443 deletions
925
Pico/memory_arm.s
Normal file
925
Pico/memory_arm.s
Normal file
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@ -0,0 +1,925 @@
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@ vim:filetype=armasm
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@ memory handlers with banking support for SSF II - The New Challengers
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@ mostly based on Gens code
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@ (c) Copyright 2006-2007, Grazvydas "notaz" Ignotas
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@ All Rights Reserved
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.include "port_config.s"
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.text
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.align 4
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@ default jump tables
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m_read8_def_table:
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.long m_read8_rom0 @ 0x000000 - 0x07FFFF
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.long m_read8_rom1 @ 0x080000 - 0x0FFFFF
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.long m_read8_rom2 @ 0x100000 - 0x17FFFF
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.long m_read8_rom3 @ 0x180000 - 0x1FFFFF
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.long m_read8_rom4 @ 0x200000 - 0x27FFFF
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.long m_read8_rom5 @ 0x280000 - 0x2FFFFF
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.long m_read8_rom6 @ 0x300000 - 0x37FFFF
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.long m_read8_rom7 @ 0x380000 - 0x3FFFFF
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.long m_read8_rom8 @ 0x400000 - 0x47FFFF - for all those large ROM hacks
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.long m_read8_rom9 @ 0x480000 - 0x4FFFFF
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.long m_read8_romA @ 0x500000 - 0x57FFFF
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.long m_read8_romB @ 0x580000 - 0x5FFFFF
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.long m_read8_romC @ 0x600000 - 0x67FFFF
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.long m_read8_romD @ 0x680000 - 0x6FFFFF
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.long m_read8_romE @ 0x700000 - 0x77FFFF
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.long m_read8_romF @ 0x780000 - 0x7FFFFF
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.long m_read8_rom10 @ 0x800000 - 0x87FFFF
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.long m_read8_rom11 @ 0x880000 - 0x8FFFFF
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.long m_read8_rom12 @ 0x900000 - 0x97FFFF
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.long m_read8_rom13 @ 0x980000 - 0x9FFFFF
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.long m_read8_misc @ 0xA00000 - 0xA7FFFF
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.long m_read_null @ 0xA80000 - 0xAFFFFF
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.long m_read_null @ 0xB00000 - 0xB7FFFF
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.long m_read_null @ 0xB80000 - 0xBFFFFF
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.long m_read8_vdp @ 0xC00000 - 0xC7FFFF
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.long m_read8_vdp @ 0xC80000 - 0xCFFFFF
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.long m_read8_vdp @ 0xD00000 - 0xD7FFFF
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.long m_read8_vdp @ 0xD80000 - 0xDFFFFF
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.long m_read8_ram @ 0xE00000 - 0xE7FFFF
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.long m_read8_ram @ 0xE80000 - 0xEFFFFF
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.long m_read8_ram @ 0xF00000 - 0xF7FFFF
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.long m_read8_ram @ 0xF80000 - 0xFFFFFF
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m_read16_def_table:
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.long m_read16_rom0 @ 0x000000 - 0x07FFFF
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.long m_read16_rom1 @ 0x080000 - 0x0FFFFF
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.long m_read16_rom2 @ 0x100000 - 0x17FFFF
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.long m_read16_rom3 @ 0x180000 - 0x1FFFFF
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.long m_read16_rom4 @ 0x200000 - 0x27FFFF
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.long m_read16_rom5 @ 0x280000 - 0x2FFFFF
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.long m_read16_rom6 @ 0x300000 - 0x37FFFF
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.long m_read16_rom7 @ 0x380000 - 0x3FFFFF
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.long m_read16_rom8 @ 0x400000 - 0x47FFFF
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.long m_read16_rom9 @ 0x480000 - 0x4FFFFF
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.long m_read16_romA @ 0x500000 - 0x57FFFF
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.long m_read16_romB @ 0x580000 - 0x5FFFFF
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.long m_read16_romC @ 0x600000 - 0x67FFFF
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.long m_read16_romD @ 0x680000 - 0x6FFFFF
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.long m_read16_romE @ 0x700000 - 0x77FFFF
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.long m_read16_romF @ 0x780000 - 0x7FFFFF
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.long m_read16_rom10 @ 0x800000 - 0x87FFFF
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.long m_read16_rom11 @ 0x880000 - 0x8FFFFF
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.long m_read16_rom12 @ 0x900000 - 0x97FFFF
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.long m_read16_rom13 @ 0x980000 - 0x9FFFFF
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.long m_read16_misc @ 0xA00000 - 0xA7FFFF
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.long m_read_null @ 0xA80000 - 0xAFFFFF
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.long m_read_null @ 0xB00000 - 0xB7FFFF
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.long m_read_null @ 0xB80000 - 0xBFFFFF
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.long m_read16_vdp @ 0xC00000 - 0xC7FFFF
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.long m_read16_vdp @ 0xC80000 - 0xCFFFFF
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.long m_read16_vdp @ 0xD00000 - 0xD7FFFF
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.long m_read16_vdp @ 0xD80000 - 0xDFFFFF
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.long m_read16_ram @ 0xE00000 - 0xE7FFFF
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.long m_read16_ram @ 0xE80000 - 0xEFFFFF
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.long m_read16_ram @ 0xF00000 - 0xF7FFFF
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.long m_read16_ram @ 0xF80000 - 0xFFFFFF
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m_read32_def_table:
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.long m_read32_rom0 @ 0x000000 - 0x07FFFF
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.long m_read32_rom1 @ 0x080000 - 0x0FFFFF
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.long m_read32_rom2 @ 0x100000 - 0x17FFFF
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.long m_read32_rom3 @ 0x180000 - 0x1FFFFF
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.long m_read32_rom4 @ 0x200000 - 0x27FFFF
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.long m_read32_rom5 @ 0x280000 - 0x2FFFFF
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.long m_read32_rom6 @ 0x300000 - 0x37FFFF
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.long m_read32_rom7 @ 0x380000 - 0x3FFFFF
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.long m_read32_rom8 @ 0x400000 - 0x47FFFF
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.long m_read32_rom9 @ 0x480000 - 0x4FFFFF
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.long m_read32_romA @ 0x500000 - 0x57FFFF
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.long m_read32_romB @ 0x580000 - 0x5FFFFF
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.long m_read32_romC @ 0x600000 - 0x67FFFF
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.long m_read32_romD @ 0x680000 - 0x6FFFFF
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.long m_read32_romE @ 0x700000 - 0x77FFFF
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.long m_read32_romF @ 0x780000 - 0x7FFFFF
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.long m_read32_rom10 @ 0x800000 - 0x87FFFF
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.long m_read32_rom11 @ 0x880000 - 0x8FFFFF
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.long m_read32_rom12 @ 0x900000 - 0x97FFFF
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.long m_read32_rom13 @ 0x980000 - 0x9FFFFF
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.long m_read32_misc @ 0xA00000 - 0xA7FFFF
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.long m_read_null @ 0xA80000 - 0xAFFFFF
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.long m_read_null @ 0xB00000 - 0xB7FFFF
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.long m_read_null @ 0xB80000 - 0xBFFFFF
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.long m_read32_vdp @ 0xC00000 - 0xC7FFFF
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.long m_read32_vdp @ 0xC80000 - 0xCFFFFF
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.long m_read32_vdp @ 0xD00000 - 0xD7FFFF
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.long m_read32_vdp @ 0xD80000 - 0xDFFFFF
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.long m_read32_ram @ 0xE00000 - 0xE7FFFF
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.long m_read32_ram @ 0xE80000 - 0xEFFFFF
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.long m_read32_ram @ 0xF00000 - 0xF7FFFF
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.long m_read32_ram @ 0xF80000 - 0xFFFFFF
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@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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.bss
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.align 4
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@.section .bss, "brw"
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@.data
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@ used tables
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m_read8_table:
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.skip 32*4
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m_read16_table:
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.skip 32*4
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m_read32_table:
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.skip 32*4
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@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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.text
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.align 4
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.global PicoMemReset
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.global PicoRead8
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.global PicoRead16
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.global PicoRead32
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.global PicoWrite8
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.global PicoWriteRomHW_SSF2
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.global m_m68k_read8_misc
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.global m_m68k_write8_misc
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PicoMemReset:
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ldr r12,=(Pico+0x22204)
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ldr r12,[r12] @ romsize
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add r12,r12,#0x80000
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sub r12,r12,#1
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mov r12,r12,lsr #19
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ldr r0, =m_read8_table
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ldr r1, =m_read8_def_table
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mov r2, #32
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1:
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ldr r3, [r1], #4
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str r3, [r0], #4
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subs r2, r2, #1
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bne 1b
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ldr r0, =m_read16_table
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ldr r1, =m_read16_def_table
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mov r2, #32
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1:
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subs r2, r2, #1
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ldr r3, [r1], #4
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str r3, [r0], #4
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bne 1b
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ldr r0, =m_read32_table
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ldr r1, =m_read32_def_table
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mov r2, #32
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1:
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subs r2, r2, #1
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ldr r3, [r1], #4
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str r3, [r0], #4
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bne 1b
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@ update memhandlers according to ROM size
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ldr r1, =m_read8_above_rom
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ldr r0, =m_read8_table
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mov r2, #20
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1:
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sub r2, r2, #1
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cmp r2, r12
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blt 2f
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cmp r2, #4
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beq 1b @ do not touch the SRAM area
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str r1, [r0, r2, lsl #2]
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b 1b
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2:
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ldr r1, =m_read16_above_rom
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ldr r0, =m_read16_table
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mov r2, #20
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1:
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sub r2, r2, #1
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cmp r2, r12
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blt 2f
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cmp r2, #4
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beq 1b
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str r1, [r0, r2, lsl #2]
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b 1b
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2:
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ldr r1, =m_read32_above_rom
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ldr r0, =m_read32_table
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mov r2, #20
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1:
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sub r2, r2, #1
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cmp r2, r12
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blt 2f
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cmp r2, #4
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beq 1b
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str r1, [r0, r2, lsl #2]
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b 1b
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2:
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bx lr
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.pool
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@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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PicoRead8: @ u32 a
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ldr r2, =m_read8_table
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bic r0, r0, #0xff000000
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and r1, r0, #0x00f80000
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ldr pc, [r2, r1, lsr #17]
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PicoRead16: @ u32 a
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ldr r2, =m_read16_table
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bic r0, r0, #0xff000000
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and r1, r0, #0x00f80000
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ldr pc, [r2, r1, lsr #17]
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PicoRead32: @ u32 a
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ldr r2, =m_read32_table
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bic r0, r0, #0xff000000
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and r1, r0, #0x00f80000
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ldr pc, [r2, r1, lsr #17]
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.pool
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@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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m_read_null:
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mov r0, #0
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bx lr
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.macro m_read8_rom sect
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ldr r1, =(Pico+0x22200)
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bic r0, r0, #0xf80000
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ldr r1, [r1]
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.if \sect
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orr r0, r0, #0x080000*\sect
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.endif
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eor r0, r0, #1
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ldrb r0, [r1, r0]
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bx lr
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.endm
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m_read8_rom0: @ 0x000000 - 0x07ffff
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m_read8_rom 0
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m_read8_rom1: @ 0x080000 - 0x0fffff
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m_read8_rom 1
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m_read8_rom2: @ 0x100000 - 0x17ffff
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m_read8_rom 2
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m_read8_rom3: @ 0x180000 - 0x1fffff
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m_read8_rom 3
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m_read8_rom4: @ 0x200000 - 0x27ffff, SRAM area
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ldr r2, =(SRam)
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ldr r3, =(Pico+0x22200)
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ldr r1, [r2, #8] @ SRam.end
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bic r0, r0, #0xf80000
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orr r0, r0, #0x200000
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cmp r0, r1
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bgt m_read8_nosram
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ldr r1, [r2, #4] @ SRam.start
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cmp r0, r1
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blt m_read8_nosram
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ldrb r1, [r3, #0x11] @ Pico.m.sram_reg
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tst r1, #5
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bne SRAMRead
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m_read8_nosram:
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ldr r1, [r3, #4] @ romsize
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cmp r0, r1
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movgt r0, #0
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bxgt lr @ bad location
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ldr r1, [r3]
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eor r0, r0, #1
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ldrb r0, [r1, r0]
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bx lr
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m_read8_rom5: @ 0x280000 - 0x2fffff
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m_read8_rom 5
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m_read8_rom6: @ 0x300000 - 0x37ffff
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m_read8_rom 6
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m_read8_rom7: @ 0x380000 - 0x3fffff
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m_read8_rom 7
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m_read8_rom8: @ 0x400000 - 0x47ffff
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m_read8_rom 8
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m_read8_rom9: @ 0x480000 - 0x4fffff
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m_read8_rom 9
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m_read8_romA: @ 0x500000 - 0x57ffff
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m_read8_rom 0xA
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m_read8_romB: @ 0x580000 - 0x5fffff
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m_read8_rom 0xB
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m_read8_romC: @ 0x600000 - 0x67ffff
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m_read8_rom 0xC
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m_read8_romD: @ 0x680000 - 0x6fffff
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m_read8_rom 0xD
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m_read8_romE: @ 0x700000 - 0x77ffff
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m_read8_rom 0xE
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m_read8_romF: @ 0x780000 - 0x7fffff
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m_read8_rom 0xF
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m_read8_rom10: @ 0x800000 - 0x87ffff
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m_read8_rom 0x10
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m_read8_rom11: @ 0x880000 - 0x8fffff
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m_read8_rom 0x11
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m_read8_rom12: @ 0x900000 - 0x97ffff
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m_read8_rom 0x12
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m_read8_rom13: @ 0x980000 - 0x9fffff
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m_read8_rom 0x13
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m_m68k_read8_misc:
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m_read8_misc:
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bic r2, r0, #0x001f @ most commonly we get i/o port read,
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cmp r2, #0xa10000 @ so check for it first
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bne m_read8_misc2
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m_read8_misc_io:
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ands r0, r0, #0x1e
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beq m_read8_misc_hwreg
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cmp r0, #4
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movlt r0, #0
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moveq r0, #1
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ble PadRead
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ldr r3, =(Pico+0x22000)
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mov r0, r0, lsr #1 @ other IO ports (Pico.ioports[a])
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ldrb r0, [r3, r0]
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bx lr
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m_read8_misc_hwreg:
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ldr r3, =(Pico+0x22200)
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ldrb r0, [r3, #0x0f] @ Pico.m.hardware
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bx lr
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m_read8_misc2:
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mov r2, #0xa10000 @ games also like to poll busreq,
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orr r2, r2, #0x001100 @ so we'll try it now
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cmp r0, r2
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beq z80ReadBusReq
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and r2, r0, #0xff0000 @ finally it might be
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cmp r2, #0xa00000 @ z80 area
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bne m_read8_misc3
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tst r0, #0x4000
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beq z80Read8 @ z80 RAM
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and r2, r0, #0x6000
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cmp r2, #0x4000
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mvnne r0, #0
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bxne lr @ invalid
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b ym2612_read_local_68k
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m_read8_fake_ym2612:
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ldr r3, =(Pico+0x22200)
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ldrb r0, [r3, #8] @ Pico.m.rotate
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add r1, r0, #1
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strb r1, [r3, #8]
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and r0, r0, #3
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bx lr
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m_read8_misc3:
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@ if everything else fails, use generic handler
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stmfd sp!,{r0,lr}
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bic r0, r0, #1
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mov r1, #8
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bl OtherRead16
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ldmfd sp!,{r1,lr}
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tst r1, #1
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moveq r0, r0, lsr #8
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bx lr
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m_read8_vdp:
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tst r0, #0x70000
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tsteq r0, #0x000e0
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bxne lr @ invalid read
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b PicoVideoRead8
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|
||||
m_read8_ram:
|
||||
ldr r1, =Pico
|
||||
bic r0, r0, #0xff0000
|
||||
eor r0, r0, #1
|
||||
ldrb r0, [r1, r0]
|
||||
bx lr
|
||||
|
||||
m_read8_above_rom:
|
||||
@ might still be SRam (Micro Machines, HardBall '95)
|
||||
ldr r2, =(SRam)
|
||||
ldr r3, =(Pico+0x22200)
|
||||
ldr r1, [r2, #8] @ SRam.end
|
||||
cmp r0, r1
|
||||
bgt m_read8_ar_nosram
|
||||
ldr r1, [r2, #4] @ SRam.start
|
||||
cmp r0, r1
|
||||
blt m_read8_ar_nosram
|
||||
ldrb r1, [r3, #0x11] @ Pico.m.sram_reg
|
||||
tst r1, #5
|
||||
bne SRAMRead
|
||||
m_read8_ar_nosram:
|
||||
ldr r2, =PicoRead16Hook
|
||||
stmfd sp!,{r0,lr}
|
||||
ldr r2, [r2]
|
||||
bic r0, r0, #1
|
||||
mov r1, #8
|
||||
mov lr, pc
|
||||
bx r2
|
||||
ldmfd sp!,{r1,lr}
|
||||
tst r1, #1
|
||||
moveq r0, r0, lsr #8
|
||||
bx lr
|
||||
|
||||
.pool
|
||||
|
||||
@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
|
||||
|
||||
.macro m_read16_rom sect
|
||||
ldr r1, =(Pico+0x22200)
|
||||
bic r0, r0, #0xf80000
|
||||
ldr r1, [r1]
|
||||
bic r0, r0, #1
|
||||
.if \sect
|
||||
orr r0, r0, #0x080000*\sect
|
||||
.endif
|
||||
ldrh r0, [r1, r0]
|
||||
bx lr
|
||||
.endm
|
||||
|
||||
|
||||
m_read16_rom0: @ 0x000000 - 0x07ffff
|
||||
m_read16_rom 0
|
||||
|
||||
m_read16_rom1: @ 0x080000 - 0x0fffff
|
||||
m_read16_rom 1
|
||||
|
||||
m_read16_rom2: @ 0x100000 - 0x17ffff
|
||||
m_read16_rom 2
|
||||
|
||||
m_read16_rom3: @ 0x180000 - 0x1fffff
|
||||
m_read16_rom 3
|
||||
|
||||
m_read16_rom4: @ 0x200000 - 0x27ffff, SRAM area (NBA Live 95)
|
||||
ldr r2, =(SRam)
|
||||
ldr r3, =(Pico+0x22200)
|
||||
ldr r1, [r2, #8] @ SRam.end
|
||||
bic r0, r0, #0xf80000
|
||||
bic r0, r0, #1
|
||||
orr r0, r0, #0x200000
|
||||
cmp r0, r1
|
||||
bgt m_read16_nosram
|
||||
ldr r1, [r2, #4] @ SRam.start
|
||||
cmp r0, r1
|
||||
blt m_read16_nosram
|
||||
ldrb r1, [r3, #0x11] @ Pico.m.sram_reg
|
||||
tst r1, #5
|
||||
beq m_read16_nosram
|
||||
stmfd sp!,{lr}
|
||||
bl SRAMRead16
|
||||
ldmfd sp!,{pc}
|
||||
m_read16_nosram:
|
||||
ldr r1, [r3, #4] @ romsize
|
||||
cmp r0, r1
|
||||
movgt r0, #0
|
||||
bxgt lr @ bad location
|
||||
ldr r1, [r3] @ 1ci
|
||||
ldrh r0, [r1, r0]
|
||||
bx lr
|
||||
|
||||
m_read16_rom5: @ 0x280000 - 0x2fffff
|
||||
m_read16_rom 5
|
||||
|
||||
m_read16_rom6: @ 0x300000 - 0x37ffff
|
||||
m_read16_rom 6
|
||||
|
||||
m_read16_rom7: @ 0x380000 - 0x3fffff
|
||||
m_read16_rom 7
|
||||
|
||||
m_read16_rom8: @ 0x400000 - 0x47ffff
|
||||
m_read16_rom 8
|
||||
|
||||
m_read16_rom9: @ 0x480000 - 0x4fffff
|
||||
m_read16_rom 9
|
||||
|
||||
m_read16_romA: @ 0x500000 - 0x57ffff
|
||||
m_read16_rom 0xA
|
||||
|
||||
m_read16_romB: @ 0x580000 - 0x5fffff
|
||||
m_read16_rom 0xB
|
||||
|
||||
m_read16_romC: @ 0x600000 - 0x67ffff
|
||||
m_read16_rom 0xC
|
||||
|
||||
m_read16_romD: @ 0x680000 - 0x6fffff
|
||||
m_read16_rom 0xD
|
||||
|
||||
m_read16_romE: @ 0x700000 - 0x77ffff
|
||||
m_read16_rom 0xE
|
||||
|
||||
m_read16_romF: @ 0x780000 - 0x7fffff
|
||||
m_read16_rom 0xF
|
||||
|
||||
m_read16_rom10: @ 0x800000 - 0x87ffff
|
||||
m_read16_rom 0x10
|
||||
|
||||
m_read16_rom11: @ 0x880000 - 0x8fffff
|
||||
m_read16_rom 0x11
|
||||
|
||||
m_read16_rom12: @ 0x900000 - 0x97ffff
|
||||
m_read16_rom 0x12
|
||||
|
||||
m_read16_rom13: @ 0x980000 - 0x9fffff
|
||||
m_read16_rom 0x13
|
||||
|
||||
m_read16_misc:
|
||||
bic r0, r0, #1
|
||||
mov r1, #16
|
||||
b OtherRead16
|
||||
|
||||
m_read16_vdp:
|
||||
tst r0, #0x70000 @ if ((a&0xe700e0)==0xc00000)
|
||||
tsteq r0, #0x000e0
|
||||
bxne lr @ invalid read
|
||||
bic r0, r0, #1
|
||||
b PicoVideoRead
|
||||
|
||||
m_read16_ram:
|
||||
ldr r1, =Pico
|
||||
bic r0, r0, #0xff0000
|
||||
bic r0, r0, #1
|
||||
ldrh r0, [r1, r0]
|
||||
bx lr
|
||||
|
||||
m_read16_above_rom:
|
||||
@ might still be SRam
|
||||
ldr r2, =(SRam)
|
||||
ldr r3, =(Pico+0x22200)
|
||||
ldr r1, [r2, #8] @ SRam.end
|
||||
bic r0, r0, #1
|
||||
cmp r0, r1
|
||||
bgt m_read16_ar_nosram
|
||||
ldr r1, [r2, #4] @ SRam.start
|
||||
cmp r0, r1
|
||||
blt m_read16_ar_nosram
|
||||
ldrb r1, [r3, #0x11] @ Pico.m.sram_reg
|
||||
tst r1, #5
|
||||
beq m_read16_ar_nosram
|
||||
stmfd sp!,{lr}
|
||||
bl SRAMRead16
|
||||
ldmfd sp!,{pc}
|
||||
m_read16_ar_nosram:
|
||||
ldr r2, =PicoRead16Hook
|
||||
ldr r2, [r2]
|
||||
mov r1, #16
|
||||
bx r2
|
||||
|
||||
.pool
|
||||
|
||||
@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
|
||||
|
||||
.macro m_read32_rom sect
|
||||
ldr r1, =(Pico+0x22200)
|
||||
bic r0, r0, #0xf80000
|
||||
ldr r1, [r1]
|
||||
bic r0, r0, #1
|
||||
.if \sect
|
||||
orr r0, r0, #0x080000*\sect
|
||||
.endif
|
||||
ldrh r0, [r1, r0]!
|
||||
ldrh r1, [r1, #2] @ 1ci
|
||||
orr r0, r1, r0, lsl #16
|
||||
bx lr
|
||||
.endm
|
||||
|
||||
|
||||
m_read32_rom0: @ 0x000000 - 0x07ffff
|
||||
m_read32_rom 0
|
||||
|
||||
m_read32_rom1: @ 0x080000 - 0x0fffff
|
||||
m_read32_rom 1
|
||||
|
||||
m_read32_rom2: @ 0x100000 - 0x17ffff
|
||||
m_read32_rom 2
|
||||
|
||||
m_read32_rom3: @ 0x180000 - 0x1fffff
|
||||
m_read32_rom 3
|
||||
|
||||
m_read32_rom4: @ 0x200000 - 0x27ffff, SRAM area (does any game do long reads?)
|
||||
ldr r2, =(SRam)
|
||||
ldr r3, =(Pico+0x22200)
|
||||
ldr r1, [r2, #8] @ SRam.end
|
||||
bic r0, r0, #0xf80000
|
||||
bic r0, r0, #1
|
||||
orr r0, r0, #0x200000
|
||||
cmp r0, r1
|
||||
bgt m_read32_nosram
|
||||
ldr r1, [r2, #4] @ SRam.start
|
||||
cmp r0, r1
|
||||
blt m_read32_nosram
|
||||
ldrb r1, [r3, #0x11] @ Pico.m.sram_reg
|
||||
tst r1, #5
|
||||
beq m_read32_nosram
|
||||
stmfd sp!,{r0,lr}
|
||||
bl SRAMRead16
|
||||
ldmfd sp!,{r1,lr}
|
||||
stmfd sp!,{r0,lr}
|
||||
add r0, r1, #2
|
||||
bl SRAMRead16
|
||||
ldmfd sp!,{r1,lr}
|
||||
orr r0, r0, r1, lsl #16
|
||||
bx lr
|
||||
m_read32_nosram:
|
||||
ldr r1, [r3, #4] @ romsize
|
||||
cmp r0, r1
|
||||
movgt r0, #0
|
||||
bxgt lr @ bad location
|
||||
ldr r1, [r3] @ (1ci)
|
||||
ldrh r0, [r1, r0]!
|
||||
ldrh r1, [r1, #2] @ (2ci)
|
||||
orr r0, r1, r0, lsl #16
|
||||
bx lr
|
||||
|
||||
m_read32_rom5: @ 0x280000 - 0x2fffff
|
||||
m_read32_rom 5
|
||||
|
||||
m_read32_rom6: @ 0x300000 - 0x37ffff
|
||||
m_read32_rom 6
|
||||
|
||||
m_read32_rom7: @ 0x380000 - 0x3fffff
|
||||
m_read32_rom 7
|
||||
|
||||
m_read32_rom8: @ 0x400000 - 0x47ffff
|
||||
m_read32_rom 8
|
||||
|
||||
m_read32_rom9: @ 0x480000 - 0x4fffff
|
||||
m_read32_rom 9
|
||||
|
||||
m_read32_romA: @ 0x500000 - 0x57ffff
|
||||
m_read32_rom 0xA
|
||||
|
||||
m_read32_romB: @ 0x580000 - 0x5fffff
|
||||
m_read32_rom 0xB
|
||||
|
||||
m_read32_romC: @ 0x600000 - 0x67ffff
|
||||
m_read32_rom 0xC
|
||||
|
||||
m_read32_romD: @ 0x680000 - 0x6fffff
|
||||
m_read32_rom 0xD
|
||||
|
||||
m_read32_romE: @ 0x700000 - 0x77ffff
|
||||
m_read32_rom 0xE
|
||||
|
||||
m_read32_romF: @ 0x780000 - 0x7fffff
|
||||
m_read32_rom 0xF
|
||||
|
||||
m_read32_rom10: @ 0x800000 - 0x87ffff
|
||||
m_read32_rom 0x10
|
||||
|
||||
m_read32_rom11: @ 0x880000 - 0x8fffff
|
||||
m_read32_rom 0x11
|
||||
|
||||
m_read32_rom12: @ 0x900000 - 0x97ffff
|
||||
m_read32_rom 0x12
|
||||
|
||||
m_read32_rom13: @ 0x980000 - 0x9fffff
|
||||
m_read32_rom 0x13
|
||||
|
||||
m_read32_misc:
|
||||
bic r0, r0, #1
|
||||
stmfd sp!,{r0,lr}
|
||||
mov r1, #32
|
||||
bl OtherRead16
|
||||
mov r1, r0
|
||||
ldmfd sp!,{r0}
|
||||
stmfd sp!,{r1}
|
||||
add r0, r0, #2
|
||||
mov r1, #32
|
||||
bl OtherRead16
|
||||
ldmfd sp!,{r1,lr}
|
||||
orr r0, r0, r1, lsl #16
|
||||
bx lr
|
||||
|
||||
m_read32_vdp:
|
||||
tst r0, #0x70000
|
||||
tsteq r0, #0x000e0
|
||||
bxne lr @ invalid read
|
||||
bic r0, r0, #1
|
||||
add r1, r0, #2
|
||||
stmfd sp!,{r1,lr}
|
||||
bl PicoVideoRead
|
||||
swp r0, r0, [sp]
|
||||
bl PicoVideoRead
|
||||
ldmfd sp!,{r1,lr}
|
||||
orr r0, r0, r1, lsl #16
|
||||
bx lr
|
||||
|
||||
m_read32_ram:
|
||||
ldr r1, =Pico
|
||||
bic r0, r0, #0xff0000
|
||||
bic r0, r0, #1
|
||||
ldrh r0, [r1, r0]!
|
||||
ldrh r1, [r1, #2] @ 2ci
|
||||
orr r0, r1, r0, lsl #16
|
||||
bx lr
|
||||
|
||||
m_read32_above_rom:
|
||||
ldr r2, =PicoRead16Hook
|
||||
bic r0, r0, #1
|
||||
ldr r2, [r2]
|
||||
mov r1, #32
|
||||
stmfd sp!,{r0,r2,lr}
|
||||
mov lr, pc
|
||||
bx r2
|
||||
mov r1, r0
|
||||
ldmfd sp!,{r0,r2}
|
||||
stmfd sp!,{r1}
|
||||
add r0, r0, #2
|
||||
mov r1, #32
|
||||
mov lr, pc
|
||||
bx r2
|
||||
ldmfd sp!,{r1,lr}
|
||||
orr r0, r0, r1, lsl #16
|
||||
bx lr
|
||||
|
||||
.pool
|
||||
|
||||
@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
|
||||
|
||||
PicoWriteRomHW_SSF2: @ u32 a, u32 d
|
||||
and r0, r0, #0xe
|
||||
movs r0, r0, lsr #1
|
||||
bne pwr_banking
|
||||
|
||||
@ sram register
|
||||
ldr r2, =(Pico+0x22211) @ Pico.m.sram_reg
|
||||
ldrb r0, [r2]
|
||||
and r1, r1, #3
|
||||
bic r0, r0, #3
|
||||
orr r0, r0, r1
|
||||
strb r0, [r2]
|
||||
bx lr
|
||||
|
||||
pwr_banking:
|
||||
and r1, r1, #0x1f
|
||||
|
||||
ldr r3, =m_read8_def_table
|
||||
ldr r2, =m_read8_table
|
||||
ldr r12, [r3, r1, lsl #2]
|
||||
str r12, [r2, r0, lsl #2]
|
||||
|
||||
ldr r3, =m_read16_def_table
|
||||
ldr r2, =m_read16_table
|
||||
ldr r12, [r3, r1, lsl #2]
|
||||
str r12, [r2, r0, lsl #2]
|
||||
|
||||
ldr r3, =m_read32_def_table
|
||||
ldr r2, =m_read32_table
|
||||
ldr r12, [r3, r1, lsl #2]
|
||||
str r12, [r2, r0, lsl #2]
|
||||
|
||||
bx lr
|
||||
|
||||
@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
|
||||
|
||||
@ Here we only handle most often used locations,
|
||||
@ everything else is passed to generic handlers
|
||||
|
||||
PicoWrite8: @ u32 a, u8 d
|
||||
bic r0, r0, #0xff000000
|
||||
and r2, r0, #0x00e00000
|
||||
cmp r2, #0x00e00000 @ RAM?
|
||||
ldr r3, =Pico
|
||||
biceq r0, r0, #0x00ff0000
|
||||
eoreq r0, r0, #1
|
||||
streqb r1, [r3, r0]
|
||||
bxeq lr
|
||||
|
||||
m_m68k_write8_misc:
|
||||
bic r2, r0, #0x1f @ most commonly we get i/o port write,
|
||||
cmp r2, #0xa10000 @ so check for it first
|
||||
bne m_write8_misc2
|
||||
m_write8_io:
|
||||
ldr r2, =PicoOpt
|
||||
and r0, r0, #0x1e
|
||||
ldr r2, [r2]
|
||||
ldr r3, =(Pico+0x22000) @ Pico.ioports
|
||||
tst r2, #0x20 @ 6 button pad?
|
||||
streqb r1, [r3, r0, lsr #1]
|
||||
bxeq lr
|
||||
cmp r0, #2
|
||||
cmpne r0, #4
|
||||
bne m_write8_io_done @ not likely to happen
|
||||
add r2, r3, #0x200 @ Pico+0x22200
|
||||
mov r12,#0
|
||||
cmp r0, #2
|
||||
streqb r12,[r2,#0x18]
|
||||
strneb r12,[r2,#0x19] @ Pico.m.padDelay[i] = 0
|
||||
tst r1, #0x40 @ TH
|
||||
beq m_write8_io_done
|
||||
ldrb r12,[r3, r0, lsr #1]
|
||||
tst r12,#0x40
|
||||
bne m_write8_io_done
|
||||
cmp r0, #2
|
||||
ldreqb r12,[r2,#0x0a]
|
||||
ldrneb r12,[r2,#0x0b] @ Pico.m.padTHPhase
|
||||
add r12,r12,#1
|
||||
streqb r12,[r2,#0x0a]
|
||||
strneb r12,[r2,#0x0b] @ Pico.m.padTHPhase
|
||||
m_write8_io_done:
|
||||
strb r1, [r3, r0, lsr #1]
|
||||
bx lr
|
||||
|
||||
|
||||
m_write8_misc2:
|
||||
and r2, r0, #0xff0000
|
||||
cmp r2, #0xa00000 @ z80 area?
|
||||
bne m_write8_not_z80
|
||||
tst r0, #0x4000
|
||||
bne m_write8_z80_not_ram
|
||||
ldr r3, =(Pico+0x20000) @ Pico.zram
|
||||
add r2, r3, #0x02200 @ Pico+0x22200
|
||||
ldrb r2, [r2, #9] @ Pico.m.z80Run
|
||||
bic r0, r0, #0xff0000
|
||||
bic r0, r0, #0x00e000
|
||||
tst r2, #1
|
||||
ldr r2, =SekCycleCnt
|
||||
streqb r1, [r3, r0] @ zram
|
||||
ldr r0, [r2]
|
||||
add r0, r0, #2 @ hack?
|
||||
str r0, [r2]
|
||||
bx lr
|
||||
|
||||
m_write8_z80_not_ram:
|
||||
and r2, r0, #0x6000
|
||||
cmp r2, #0x4000
|
||||
bne m_write8_z80_not_ym2612
|
||||
ldr r3, =PicoOpt
|
||||
and r0, r0, #3
|
||||
ldr r3, [r3]
|
||||
mov r2, #0 @ is_from_z80 = 0
|
||||
tst r3, #1
|
||||
bxeq lr
|
||||
stmfd sp!,{lr}
|
||||
and r1, r1, #0xff
|
||||
bl ym2612_write_local
|
||||
ldr r2, =emustatus
|
||||
ldmfd sp!,{lr}
|
||||
ldr r1, [r2]
|
||||
and r0, r0, #1
|
||||
orr r1, r0, r1
|
||||
str r1, [r2] @ emustatus|=ym2612_write_local(a&3, d);
|
||||
bx lr
|
||||
|
||||
m_write8_z80_not_ym2612: @ not too likely
|
||||
mov r2, r0, lsl #17
|
||||
bic r2, r2, #6<<17
|
||||
mov r3, #0x7f00
|
||||
orr r3, r3, #0x0011
|
||||
cmp r3, r2, lsr #17 @ psg @ z80 area?
|
||||
beq m_write8_psg
|
||||
and r2, r0, #0x7f00
|
||||
cmp r2, #0x6000 @ bank register?
|
||||
bxne lr @ invalid write
|
||||
|
||||
m_write8_z80_bank_reg:
|
||||
ldr r3, =(Pico+0x22208) @ Pico.m
|
||||
ldrh r2, [r3, #0x0a]
|
||||
mov r1, r1, lsl #8
|
||||
orr r2, r1, r2, lsr #1
|
||||
bic r2, r2, #0xfe00
|
||||
strh r2, [r3, #0x0a]
|
||||
bx lr
|
||||
|
||||
|
||||
m_write8_not_z80:
|
||||
and r2, r0, #0xe70000
|
||||
cmp r2, #0xc00000 @ VDP area?
|
||||
bne OtherWrite8 @ passthrough
|
||||
and r2, r0, #0xf9
|
||||
cmp r2, #0x11
|
||||
bne OtherWrite8
|
||||
m_write8_psg:
|
||||
ldr r2, =PicoOpt
|
||||
and r0, r1, #0xff
|
||||
ldr r2, [r2]
|
||||
tst r2, #2
|
||||
bxeq lr
|
||||
b SN76496Write
|
||||
|
||||
Loading…
Add table
Add a link
Reference in a new issue