IBT Technologies IB881, User Manual

Page: 59 / 60

APPENDIX
IB881 User’s Manual 55
;[]================================================
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
;[]================================================
; 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
;[]================================================