Intel IB850 user manual Near

INSTALLATIONS

;Name : Unlock_Chip

;IN : None

;OUT : None ;[]===============================================

Unlock_Chip Proc		Near
mov		dx, 2Eh
mov		al, 87h
out	dx, al
out	dx, al
ret

Unlock_Chip Endp ;[]================================================

;Name : Lock_Chip

;IN : None

;OUT : None ;[]================================================

Unlock_Chip Proc	Near
mov	dx, 2Eh
mov	al, 0AAh

out dx, al ret

Unlock_Chip Endp ;[]================================================

;Name : Write_Reg

;IN : CL - register index

;AL - Value to write

;OUT : None ;[]================================================

Write_Reg Proc Near

push ax

mov	dx, 2Eh
mov	al,cl
out	dx,al
pop ax
inc	dx
out	dx,al
ret
Write_Reg	Endp

;[]================================================

IB850 User’s Manual 31