Ziatech Corporation ZT 8809A, Руководство по эксплуатации

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Centronics Printer Interface
DISABLING SHARING OF PRINTER PORT
SIGNALS
This section describes how to dedicate the shared printer port signals
to printer use only. All four shared signals (INIT*, AFD*, ERR*, and
SLIN*) are treated as a group by STD DOS, so if only one is needed
by the printer, all four are still made available. If you are not using
STD DOS, each signal may be individually selected for I/O or printer
purposes by jumper selections as described in Appendix A. The
relevant jumpers are W13, W37, W39, W46, and W67.
If you are using STD DOS,
1. First edit the SYSTEM.CFG file on the RAM drive, which is a
battery-backed RAM disk designed to hold system configuration
variables and batch files. Refer to the STD DOS system manual
for further information on the contents of this file.
To edit this file, type:
P:\SETUP <CR>
Modify the "Shared Printer Port" option to "NO" and select
"YES" for the "Update System Configuration" option. Press F10
and YES to update your system.
2. Next, power down the system and remove jumpers W13B, 37,
39, 46B, and W67 if installed. This disconnects all printer port
signals from any logic other than the actual printer port drivers
and receivers, freeing them for use by the printer. STD DOS
then drives the INIT signal on power-up active (high) for the
proper time, and then inactive (low).
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