Intel MAT-880 user manual UnlockChip Proc Near mov dx, 4Eh mov al, 0AAh out dx, al ret

INSTALLATIONS

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 pushax

mov dx, 4Eh

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

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

;Name : Read_Reg

;IN : CL - register index

; OUT : AL - Value to read ;[]===================================================

Read_Reg	Proc Near
Mov al, cl
mov dx, 4Eh
out	dx, al
inc	dx
in	al, dx
ret
Read_Reg	Endp

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

MAT-880 User’s Manual 29