Toshiba A20-S259 Maintenance Manual - Page 197
Not Used, Std. Bi-Direct, are Channel 1and Channel 3 Default.
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3 Tests and Diagnostics 3.26 SETUP When the Printer Port Mode (see settings below) is set to ECP, the DMA channel can also be set to 1, 2 or 3. The default is 3. LPT setting LPT 1 LPT 2 LPT 3 Not Used Interrupt level 7 5 7 Disables the port I/O address 378H 278H 3BCH DMA channel 3 (Parallel port default) 3 3 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). OPTIONS DMA = Channel 3 (Default) For most printers, the port should be set to ECP. With some other parallel devices, the setting should be Std. Bi-Direct. 3-82 Satellite A20 Maintenance Manual (960-444)
3
Tests and Diagnostics
3.26
SETUP
3-82
Satellite A20 Maintenance Manual (960-444)
When the Printer Port Mode (see settings below) is set to
ECP
, the DMA channel
can also be set to
1
,
2
or
3
. The default is 3.
LPT setting
Interrupt level
I/O address
DMA channel
LPT 1
7
378H
3
(Parallel port default)
LPT 2
5
278H
3
LPT 3
7
3BCH
3
Not Used
Disables the 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).
For most printers, the port should be set to
ECP
. With some other parallel devices,
the setting should be
Std. Bi-Direct
.
DMA = Channel 3 (Default)
OPTIONS