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change to_u8 to to_u8! to avoid bounds checks at runtime

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Matthew Berry 2020-12-06 16:07:44 -08:00
parent 524eeabd11
commit 18eabafad1
1 changed files with 6 additions and 6 deletions
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12
src/crab/apu.cr
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@ -164,10 +164,10 @@ class APU
when @channel2 then @channel2.read_io io_addr
when @channel3 then @channel3.read_io io_addr
when @channel4 then @channel4.read_io io_addr
when 0x80 then @soundcnt_l.value.to_u8
when 0x81 then (@soundcnt_l.value >> 8).to_u8
when 0x82 then @soundcnt_h.value.to_u8
when 0x83 then (@soundcnt_h.value >> 8).to_u8
when 0x80 then @soundcnt_l.value.to_u8!
when 0x81 then (@soundcnt_l.value >> 8).to_u8!
when 0x82 then @soundcnt_h.value.to_u8!
when 0x83 then (@soundcnt_h.value >> 8).to_u8!
when 0x84
0x70_u8 |
(@sound_enabled ? 0x80 : 0) |
@ -176,8 +176,8 @@ class APU
(@channel2.enabled ? 0b0010 : 0) |
(@channel1.enabled ? 0b0001 : 0)
when 0x85 then 0_u8 # unused
when 0x88 then @soundbias.value.to_u8
when 0x89 then (@soundbias.value >> 8).to_u8
when 0x88 then @soundbias.value.to_u8!
when 0x89 then (@soundbias.value >> 8).to_u8!
else abort "Unmapped APU read ~ addr:#{hex_str io_addr.to_u8}"
end
end