[BITS 32] PIC1_CMD equ 0x20 PIC1_DATA equ 0x21 PIC2_CMD equ 0xA0 PIC2_DATA equ 0xA1 section .text global setup_pic setup_pic: mov al, 0x11 out PIC1_CMD, al out PIC2_CMD, al mov al, 0x20 out PIC1_DATA, al mov al, 0x28 out PIC2_DATA, al mov al, 4 out PIC1_DATA, al mov al, 2 out PIC2_DATA, al ; mask all mov al, 0xFF out PIC1_DATA, al out PIC2_DATA, al ret global pic_eoi pic_eoi: mov al, 0x20 out PIC2_CMD, al out PIC1_CMD, al ret