Sharp 21H-S3P Especificações Página 217

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3.31 SETUP 3 Tests and Diagnostics
3-104 [CONFIDENTIAL] Satellite A50S/TECRA A3X Maintenance Manual (960-534)
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
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