INSTALLATIONS
MB870 User’s Manual
25
; Name : Unlock_Chip
; IN : None
; OUT : None
;[]===============================================
Unlock_Chip
Proc
Near
Mov dx, 4Eh
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, 4Eh
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, 4Eh
mov
al,cl
out dx,al
pop ax
inc dx
out dx,al
ret
Write_Reg Endp
;[]================================================
Summary of Contents for MB870
Page 1: ...MB870 Socket 478 Pentium 4 ATI RS300M Mini ITX USER S MANUAL Version 1 0A ...
Page 4: ...iv MB870 User s Manual This page is intentionally left blank ...
Page 8: ...INTRODUCTION 4 MB870 User s Manual Board Dimensions ...
Page 34: ...INSTALLATIONS 30 MB870 User s Manual This page is intentionally left blank ...