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The PC I/O port map is given below.
ADDRESS Device
ADDRESS DEVICE
000-1FF
PC reserved
320-32F
XT Hard Disk
200-20F Game/control
378-37F Parallel
Printer
210-21F
XT Expansion Unit
380-38F
SDLC
238-23F
Bus Mouse/Alt. Bus Mouse 3A0-3AF
SDLC
278-27F
Parallel Printer
3B0-3BF
MDA/Parallel Printer
2B0-2DF EGA
3C0-3CF EGA
2E0-2E7 AT
GPIB
3D0-3DF CGA
2E8-2EF
Serial Port
3E8-3EF
Serial Port
2F8-2FF
Serial Port
3F0-3F7
Floppy Disk
300-31F
Prototype Card
3F8-3FF
Serial Port
2.3 Jumper Settings
2.3.1 JP1 : D/A Internal Reference Voltage
Selection
Reference
Voltage
-5V
(default)
1
2
3
(-10V)
(-5V)
Reference
Voltage
-10V
1
2
3
(-10V)
(-5V)
Select (-5V) : D/A voltage output = 0 to 5V (both channel)
Select (-10V) : D/A voltage output = 0 to 10V (both channel)
JP1 is valid only if JP2 is set to D/A internal reference voltage
OME-A-822PGL/PGH Hardware Manual ----
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