Re: May be mistake?

[Alan Cox]

>    if (irq < 8) {
>         cache_21 |= 1 << irq;
>         outb(0x21,cache_21);       <--- outb(cache_21,0x21);
>     } else {
>         cache_A1 |= 1 << (irq-8);
>         outb(0xA1,cache_A1);       <--- outb(cache_A1,0xA1);

Linux outb() macros are data, port