User’s Manual
Custom Embedded Solutions
WIN Enterprises, Inc. [email protected] www-win-ent.com (978)688-2000
79
MOV AL, 07H
OUT DX, AL
;O 2E 07
MOV DX, 2FH
MOV AL, 09H
OUT DX, AL
;O 2F 09 (select logic device 9)
;---------------------------------------------------------------------------------
; Read CRF1 and set bit 3= 0, bit 2= 1 to enable bypass circuit
;---------------------------------------------------------------------------------
MOV DX, 2EH
MOV AL, 0F1H
OUT DX, AL
;O 2E F1
MOV DX, 2FH
IN AL, DX
;read F1
AND AL, 0F3H
;mask bit 3, bit 2
OR AL, 04H
;set bit3 = 0, bit 2= 1
OUT DX, AL
;send value
;----------------------------------------------------------------------------------------
; Exit extended function mode
;----------------------------------------------------------------------------------------
MOV DX, 2EH
MOV AL, 0AAH
OUT DX, AL
;close super IO
