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[ld45_start_nothing]
/
src
/
intr.asm
diff --git
a/src/intr.asm
b/src/intr.asm
index
0c8acf7
..
58ef37f
100644
(file)
--- a/
src/intr.asm
+++ b/
src/intr.asm
@@
-40,14
+40,29
@@
set_intr:
; selector (kcode:1) goes to the second dword of the descriptor
mov dword [ebx + 4], 08h
; selector (kcode:1) goes to the second dword of the descriptor
mov dword [ebx + 4], 08h
+ ; install dummy interrupt handlers for all IRQ vectors
+%assign i 0
+%rep 8
+ set_irq_vector i, dummy_intr_pic1
+ set_irq_vector i+8, dummy_intr_pic2
+%assign i i+1
+%endrep
+
pop ebx
pop ebp
ret
pop ebx
pop ebp
ret
-PIC1_CMD equ 20h
-PIC1_DATA equ 21h
-PIC2_CMD equ 0a0h
-PIC2_DATA equ 0a1h
+dummy_intr_pic1:
+ push eax
+ end_of_irq 0
+ pop eax
+ iret
+
+dummy_intr_pic2:
+ push eax
+ end_of_irq 8
+ pop eax
+ iret
; PIC initialization command word 1 bits
ICW1_ICW4_NEEDED equ 01h
; PIC initialization command word 1 bits
ICW1_ICW4_NEEDED equ 01h
@@
-61,8
+76,6
@@
ICW4_AUTO_EOI equ 02h
ICW4_BUF_SLAVE equ 08h
ICW4_BUF_MASTER equ 0ch
ICW4_SPECIAL equ 10h
ICW4_BUF_SLAVE equ 08h
ICW4_BUF_MASTER equ 0ch
ICW4_SPECIAL equ 10h
-; PIC operation command word 2 bits
-OCW2_EOI equ 20h
init_pic:
; send ICW1 saying we'll follow with ICW4 later on
init_pic:
; send ICW1 saying we'll follow with ICW4 later on