Computer Hardware User Manual

INSTALLATIONS
28 AR-B1760 User’s Manual
; 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
;[]================================================
; 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
;[]================================================