AXIOMTEK AX12270 User Manual page 68

AX12270 PC/104 Module Series User's Manual
GPO program sample:
O 2e 87
O 2e 87
o 2e 07
o 2f 07
O 2e 29
o 2f 80
o 2e 30
o 2f 01
o 2e f0
o 2f 00
o 2e f1
o 2f 00
o 2e f2
o 2f 00
q
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Extended Functions Enable Register
Extended Functions Enable Register
EFIR=EFER (Extended Functions Index
Register) point to Logical Device Number
Reg.
EFDR=EFIR+1 (select logical device 7,
GPIO in logical device 7 )
Select CR29
(Define the PINs to be GPIO or Game Port
1) "80" Pin121 ~ 128 set GPIO
Select CR30 (Active or inactive)
Set 01 (Active), 00 (inactive)
Select CRF0 (Set the PINs to be GPO or
GPI Function)
Set the PINs to be GPO
Select CRF1 (Set the PINs to be Read
only??)
Set the PINs to be R/W
Select CRF2 (Ouput High / Low)
Set the PINs to be all Low Level (FF=all
High Level)
Quit debug
Digital I/O