root/hwhelp.s

    .text

InBuffEmpty:
    push %eax
    push %ecx
    mov $0x2FFFF, %ecx
ibe:
    in $0x64, %al
    test $2, %al
    loopnz ibe
    pop %ecx
    pop %eax
    ret

OutBuffFull:
    push %eax
    push %ecx
    mov $0x2FFFF, %ecx
obf:
    in $0x64, %al
    test $1, %al
    loopz   obf
    pop %ecx
    pop %eax
    ret