NAR-5050/5070 Series User
’
s Manual
47
mov bl,ch
and bl,40h ; Other bits = 0 except Bit6
rol bl,01h ; Bit6 rotate to Bit7 for EBX_Bit[23..16]
add bh,bl ; Add BIt6 of ch in BH
mov bl,ch ; Bit7 of Ch needs to be saved since Programmed
and bl,80h ; Other bits = 0 except Bit7
ror bl,07h ; Bit7 rotate to Bit0 for EBX_Bit[23..16]
; Keep bit7,6,5 end -----------------------
add bl,bh ; Bit7 ,Bit6, Bit5 and Bit4 of Ch programmed
mov bh,GPDO3 ; EBX_Bit[31..24]
rol ebx,10h ; Restore the Swap of EBX high and low word
call LOOP_GPO_BITS ; call output GPDO
; Bit4 of Ch end ---------------------------------
; Bit3 of Ch start ------------------------------
; GPIO32
; EBX_Bit[31..24] : GPDO Offset value = 08h,
; EBX_Bit[23..16] : GPO Data = Bit3 of Ch ---> Bit2 , other bits --> 0
; EBX_Bit[15..8] : GPCFG1(LDN07_Index_F1h) Data = ( read value ) or 07h
; EBX_Bit[7..0] : GPSEL (LDN07_Index_F0h) Data , Port# and Pin# = 32h
mov bl,32h ; EBX_Bit[7..0] = 32h
mov dx,Index_IO_Port ; Read Index F1h first
mov al,GPCFG1
out dx,al
mov dx,Data_IO_Port
in al,dx
or al,07h ; OR 07h
mov bh,al ; EBX_Bit[15..8]
ror ebx,10h ; Swap EBX high and low word
mov bl,ch
and bl,08h ; Other bits = 0 except Bit3
ror bl,01h ; Bit3 rotate to Bit2 for EBX_Bit[23..16]
mov bh,bl ; Temperoary save in BH
; Keep bit7,6,5,4 start ---------------------
mov bl,ch
and bl,10h ; Other bits = 0 except Bit4
rol bl,02h ; Bit4 rotate to Bit6 for EBX_Bit[23..16]
add bh,bl ; Add Bit4 of ch in BH
