IBASE IB550 - Manual (Page 58)

APPENDIX
54 IB550F User’s Manual
;[]================================================
Unlock_Chip
Proc Near
mov dx, 4Eh
mov al, 0Aah
out dx, al
ret
Unlock_Chip Endp
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; 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
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; 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
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