| 0,0 → 1,90 |
|---|
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| ;; ;; |
| ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;; |
| ;; Distributed under terms of the GNU General Public License ;; |
| ;; ;; |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| |
| align 4 |
| pic_delay: |
| |
| jmp pdl1 |
| pdl1: ret |
| |
| align 4 |
| rerouteirqs: |
| |
| cli |
| |
| mov al,0x11 ; icw4, edge triggered |
| out 0x20,al |
| call pic_delay |
| out 0xA0,al |
| call pic_delay |
| |
| mov al,0x20 ; generate 0x20 + |
| out 0x21,al |
| call pic_delay |
| mov al,0x28 ; generate 0x28 + |
| out 0xA1,al |
| call pic_delay |
| |
| mov al,0x04 ; slave at irq2 |
| out 0x21,al |
| call pic_delay |
| mov al,0x02 ; at irq9 |
| out 0xA1,al |
| call pic_delay |
| |
| mov al,0x01 ; 8086 mode |
| out 0x21,al |
| call pic_delay |
| out 0xA1,al |
| call pic_delay |
| |
| mov al,255 ; mask all irq's |
| out 0xA1,al |
| call pic_delay |
| out 0x21,al |
| call pic_delay |
| |
| mov ecx,0x1000 |
| cld |
| picl1: call pic_delay |
| loop picl1 |
| |
| mov al,255 ; mask all irq's |
| out 0xA1,al |
| call pic_delay |
| out 0x21,al |
| call pic_delay |
| |
| ret |
| |
| |
| align 4 |
| ;proc enable_irq stdcall, irq_line:dword |
| enable_irq: ; FIXME make fastcall |
| mov ebx, [esp+4] ;irq_line |
| mov edx, 0x21 |
| cmp ebx, 8 |
| jb @F |
| mov edx, 0xA1 |
| sub ebx,8 |
| @@: |
| in al,dx |
| btr eax, ebx |
| out dx, al |
| ret 4 |
| |
| |
| align 4 |
| ;proc irq_eoi fastcall, irq_line:dword |
| irq_eoi: |
| cmp cl, 8 |
| mov al, 0x20 |
| jb @f |
| out 0xa0, al |
| @@: |
| out 0x20, al |
| ret |