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stub keypad to 0xFF (no keys pressed)

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This commit is contained in:
Matthew Berry 2020-10-13 23:14:17 -07:00
parent cbe206b13e
commit 025a0c3d5b
2 changed files with 4 additions and 2 deletions
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2
src/crab/interrupts.cr
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@ -11,7 +11,7 @@ class Interrupts
when 0x203 then 0xFF_u8 & @reg_if >> 8
when 0x208 then @reg_ime ? 1_u8 : 0_u8
when 0x209 then @reg_ime ? 1_u8 : 0_u8
else raise "Unimplemented interrupts read ~ addr:#{hex_str io_addr.to_u8}"
else raise "Unimplemented interrupts read ~ addr:#{hex_str io_addr.to_u8!}"
end
end

4
src/crab/mmio.cr
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@ -6,8 +6,10 @@ class MMIO
io_addr = 0x0FFF_u16 & index
if io_addr <= 0x05F
@gba.ppu.read_io io_addr
elsif (io_addr >= 0x200 & io_addr <= 0x203) || (io_addr >= 0x208 && io_addr <= 0x209)
elsif (io_addr >= 0x200 && io_addr <= 0x203) || (io_addr >= 0x208 && io_addr <= 0x209)
@gba.interrupts.read_io io_addr
elsif io_addr >= 0x130 && io_addr <= 0x133 # todo keypad
0xFF_u8
elsif not_used? io_addr
0xFF_u8 # todo what is returned here?
else