3 Tests and Diagnostics
3.31 SETUP
Satellite A50S/TECRA A3X Maintenance Manual (960-534)
[CONFIDENTIAL] 3-103
10.
I/O ports
This option controls settings for the serial and parallel ports.
(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
(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 and I/O port base address for the
parallel port. When the parallel port mode is set to
Std. Bi-direct
, the options
are as follows:
LPT setting
Interrupt level
I/O address
LPT 1
7
378H
LPT 2
5
278H
LPT 3
7
3BCH
Not Used
Disables port
When the parallel port mode (see settings below) is set to
ECP
, the DMA
channel can also be set to
1
or
3
. The default is 3.
LPT setting
Interrupt level
I/O address
DMA channel
LPT 1
7
378H
3 (Default)
LPT 2
5
278H
3
LPT 3
7
3BCH
3
Not Used
Disables port
Summary of Contents for Tecra A3X
Page 10: ...x CONFIDENTIAL Satellite A50S TECRA A3X Maintenance Manual 960 534 ...
Page 11: ... CONFIDENTIAL Chapter 1 Hardware Overview ...
Page 16: ...1 Hardware Overview 1 vi CONFIDENTIAL Satellite A50S TECRA A3X Maintenance Manual 960 534 ...
Page 51: ... CONFIDENTIAL Chapter 2 Troubleshooting Procedures ...
Page 105: ... CONFIDENTIAL Chapter 3 Tests and Diagnostics ...
Page 110: ...3 Tests and Diagnostics 3 vi CONFIDENTIAL Satellite A50S TECRA A3X Maintenance Manual 960 534 ...
Page 217: ... CONFIDENTIAL Chapter 4 Replacement Procedures ...
Page 337: ... CONFIDENTIAL Appendices ...
Page 338: ...Appendices App ii CONFIDENTIAL Satellite A50S TECRA A3X Maintenance Manual 960 534 ...