3 Tests and Diagnostics 3.23 SETUP
9. 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 PC card.
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
When you select one of the above options, except for Not Used, a subwindow
similar to the one below appears to let you set the DMA. The options for this
setting are Channel 1and Channel 3 (Default).
DMA = Channel 3 (Default)
OPTIONS
For most printers, the port should be set to ECP in Peripheral. With some
other parallel devices, the setting should be Std. Bi-Direct.
3-64 Satellite A40 Maintenance Manual (960-458)
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