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This commit is contained in:
Kartik K. Agaram 2021-04-02 22:53:11 -07:00
parent 350a10251a
commit 3e9a266eda
1 changed files with 2 additions and 2 deletions
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boot.subx
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@ -53,14 +53,14 @@
{
e4/read-port-into-al 0x64/imm8
a8/test-bits-in-al 0x02/imm8 # set zf if bit 1 (second-least significant) is not set
75/jump-if-!zero loop/imm8
75/jump-if-!zero loop/disp8
b0/copy-to-al 0xd1/imm8
e6/write-al-into-port 0x64/imm8
}
{
e4/read-port-into-al 0x64/imm8
a8/test-bits-in-al 0x02/imm8 # set zf if bit 1 (second-least significant) is not set
75/jump-if-!zero loop/imm8
75/jump-if-!zero loop/disp8
b0/copy-to-al 0xdf/imm8
e6/write-al-into-port 0x64/imm8
}