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properly handle if ack

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Matthew Berry 2020-11-26 12:18:36 -08:00
parent 327904b6d6
commit e48c186068
1 changed files with 2 additions and 2 deletions
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4
src/crab/interrupts.cr
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@ -40,8 +40,8 @@ class Interrupts
case io_addr
when 0x200 then @reg_ie.value = (@reg_ie.value & 0xFF00) | value
when 0x201 then @reg_ie.value = (@reg_ie.value & 0x00FF) | value.to_u16 << 8
when 0x202 then @reg_if.value = (@reg_if.value & 0xFF00) | value
when 0x203 then @reg_if.value = (@reg_if.value & 0x00FF) | value.to_u16 << 8
when 0x202 then @reg_if.value &= ~value
when 0x203 then @reg_if.value &= ~(value.to_u16 << 8)
when 0x208 then @ime = bit?(value, 0)
when 0x209 # ignored
else raise "Unimplemented interrupts write ~ addr:#{hex_str io_addr.to_u8!}, val:#{value}"