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Fixed the new parseHex

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I accidentally did `add 0xe9` without specifying `a`
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Clanmaster21 2019-10-15 22:01:48 +01:00 committed by GitHub
parent 2224a9264e
commit 174148100c
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1 changed files with 2 additions and 3 deletions
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kernel/parse.asm
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@ -16,12 +16,11 @@ parseHex:
sub 0xf6 ; maps to 0-9 and carries if not a digit
ret nc
.alpha:
and 0xdf ; converts lowercase to uppercase
add 0xe9 ; map 0x11-x017 onto 0xFA - 0xFF
add a, 0xe9 ; map 0x11-x017 onto 0xFA - 0xFF
sub 0xfa ; map onto 0-6
ret c
; We have alpha.
; we have an A-F digit
add a, 10 ; C is clear, map back to 0xA-0xF
ret