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Merge pull request #152 from gwilymk/set-waitstate-control-to-standard

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Set waitstate to 0x4317 as is standard in most games
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Corwin 2022-01-03 23:53:06 +00:00 committed by GitHub
parent 311c26caad 234db0da96
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agb/crt0.s
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@ -44,6 +44,11 @@ b .Initialise_mb
@ see: https://mgba-emu.github.io/gbatek/#swi-0bh-gbands7nds9dsi7dsi9---cpuset @ see: https://mgba-emu.github.io/gbatek/#swi-0bh-gbands7nds9dsi7dsi9---cpuset
.CommonInit: .CommonInit:
@ set the waitstate control register to the normal value used in manufactured cartridges
ldr r0, =0x04000204 @ address for waitstate control register
ldr r1, =0x4317 @ WS0/ROM=3,1 clks; SRAM=8 clks; WS2/EEPROM: 8,8 clks; prefetch enabled
strh r1, [r0]
@ copies iwram section in rom to iwram in ram @ copies iwram section in rom to iwram in ram
ldr r0, =__iwram_rom_start ldr r0, =__iwram_rom_start
ldr r1, =__iwram_data_start ldr r1, =__iwram_data_start