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GAP/UnixWare 7.x Printer Hardware Flow Control Configuration GAP/UnixWare 7.x Printer Hardware Flow Control Configuration
Hardware Flow Control is indicated whenever a printer is having buffer
overruns, is losing sections of a file, or is having other problems which
can't seem to be resolved. Most printers are simply more reliable under
hardware flow control.
1) The Printer
Should be set for hardware flow control,
on most printers this is DTR flow control (Okidata printers should be set
for SSD+ and cabled appropriately.)
2) The Cable
Use the Standard Printer Cable as diagrammed in the
Digi Standard Cable section.
3) Adding the Printer
run: scoadmin
Choose: Printer Setup Manager --> Printer --> Add Local
Type in a name for the printer
Choose the model (use other if not sure)
Select: serial
Serial settings (the defaults are fine for most printers)
Connection port -- choose other
type in the name of the appropriate port, i.e.:
/dev/term/a01s
Advanced options -- if appropriate
4) Configure for Hardware Flow Control
Create a file called /etc/rc2.d/S99digi and add the following commands
cat < /dev/term/a01s > /dev/null &
ditty ctspace -ixon -ixoff -ixany /dev/term/a01s
ditty altpin /dev/term/a01s [if using 8 wire cable]
5) Setting up a Print Spool
To set up a Spool, issue the following commands:
/usr/lib/lpadmin -p spoolname -v/dev/term/a01s -m standard
Use standard or a different printer type if appropriate.
enable spoolname
/usr/lib/accept spoolname
| Device | Dialin | Dialout/Printer/Terminal
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xem, c/x, epc/x
and portserver | term/a01m | term/a01s
| | xe and xi | term/i1A | term/i1a
| | xr | term/r1A | term/r1a |
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