pic_a.asm File Reference

Go to the source code of this file.

Variables
define	PIC_MASTER_PORT
master define	PIC_MASTER_PORT2
master define	PIC_SLAVE_PORT
slave define	PIC_SLAVE_PORT2
slave define	PIC_EOI
end of interrupt global _PicIrqDisable global	_PicIrqEnable [section.text]
code	section
_PicIrqDisable	__pad0__
_PicIrqDisable get paramter passed pushfd	cli
disable all maskable interrupt mov	ah
disable all maskable interrupt mov	cl = 8
cmp jae	L_DisableHighIrq
	if = 8
jump to disable high irq	L_DisableLowIrq
get current master pic setting or	al
write to	popfd
pop register back	ret
	return
_PicIrqEnable	__pad1__
_PicIrqEnable get irq number	pushfd
shift s bit to corrospand cmp compare cl with jae	L_EnableHighIrq
if jump EnableHighIrq	L_EnableLowIrq

---

Variable Documentation

_PicIrqDisable __pad0__

Definition at line 26 of file pic_a.asm.

_PicIrqEnable __pad1__

Definition at line 50 of file pic_a.asm.

end of interrupt global _PicIrqDisable global _PicIrqEnable[section.text]

Definition at line 20 of file pic_a.asm.

unmask int bit in slave and ah

Initial value:

1
    rol ah

Definition at line 29 of file pic_a.asm.

unmask int bit in slave out al

Definition at line 35 of file pic_a.asm.

if cl = 8

Definition at line 29 of file pic_a.asm.

push eflags of cpu cli

Definition at line 26 of file pic_a.asm.

if = 8

Definition at line 32 of file pic_a.asm.

return L_DisableHighIrq

Definition at line 31 of file pic_a.asm.

jump to disable high irq L_DisableLowIrq

Definition at line 32 of file pic_a.asm.

pop eflags of cpu ret L_EnableHighIrq

Definition at line 55 of file pic_a.asm.

if jump EnableHighIrq L_EnableLowIrq

Definition at line 56 of file pic_a.asm.

slave define PIC_EOI

Definition at line 15 of file pic_a.asm.

define PIC_MASTER_PORT

Definition at line 1 of file pic_a.asm.

unmask int bit in master out PIC_MASTER_PORT2

Definition at line 12 of file pic_a.asm.

master define PIC_SLAVE_PORT

Definition at line 13 of file pic_a.asm.

unmask int bit in slave out PIC_SLAVE_PORT2

Definition at line 14 of file pic_a.asm.

unmask int bit in slave popfd

Definition at line 37 of file pic_a.asm.

_PicIrqEnable get irq number pushfd

Definition at line 50 of file pic_a.asm.

pop register back ret

Definition at line 38 of file pic_a.asm.

return

Definition at line 45 of file pic_a.asm.

code section

Definition at line 21 of file pic_a.asm.