3 Tests and Diagnostics 3.31 SETUP
3-102 TECRA M3 Maintenance Manual (960-507)
10. I/O ports
This option controls settings for the parallel port.
NOTE: Do not assign the same interrupt request level and I/O address to the serial port
and PC card.
(a) Serial
Use this option to set the COM level for the serial port. The serial port interrupt
request level (IRQ) and I/O port base address for each COM level is shown below:
COM level Interrupt level I/O address
COM1 4 3F8H (Serial port default)
COM2 3 2F8H
COM3 4 3E8H
COM3 5 3E8H
COM3 7 3E8H
COM4 3 2E8H
COM4 5 2E8H
COM4 7 2E8H
Not Used Disables port
(b) Parallel
This option sets the interrupt request level (IRQ) and I/O port base address for the
parallel port. When the “Parallel Port Mode” is set to Std. Bi-direct, the options
are:
LPT setting Interrupt level I/O address
LPT 1 7 378H
LPT 2 5 278H
LPT 3 7 3BCH
Not Used Disables port
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