Don't depend on dx being 0 in modify_sector
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1 changed files with 4 additions and 4 deletions
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@ -283,11 +283,11 @@ modify_sectors:
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modify_sector:
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pusha
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mov cx, 18
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div cx
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mov cl, 18
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div cl
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; cl = sector (1…18)
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mov cl, dl
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mov cl, ah
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inc cl
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; dh = head (0…1)
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@ -295,7 +295,7 @@ modify_sector:
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and dh, al
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; ch = cylinder
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shr ax, 1
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shr al, 1
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mov ch, al
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; dl = drive number
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