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computers / comp.sys.ibm.ps2.hardware / H027141 HIGH SPEED PARALLEL PORT PROBLEMS

H027141 HIGH SPEED PARALLEL PORT PROBLEMS

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From: ohl...@charter.net (Louis Ohland)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: H027141 HIGH SPEED PARALLEL PORT PROBLEMS
Date: Tue, 7 Dec 2021 21:53:09 -0600
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by: Louis Ohland - Wed, 8 Dec 2021 03:53 UTC

PCINFO, PS.TIP

SYMPTOM:
There are multiple symptoms that may be experienced with this
situation. The following are three known symptoms:

1. System hangs during High Speed Parallel Port* operations
while multi-tasking or while busy with display screen
updates.

2. DMA arbitration time-outs (error code 01291300).

3. Internal Processing Error at location ##0160:FFF6015C -
000D:A15C 60002, 9084, (when running OS/2).

The affected systems are:
Server 95/95A Models, 0PT, 0NT, 0NG, 3NG, 3PT, 3NT

* This system board also has a standard parallel port.

PROBLEM ISOLATION AIDS:
Use the "view configuration" function of the system main menu
to note the DMA arbitration level of the high speed parallel
port.

FIX:
If you are experiencing any of the above problems, the following
changes are recommended:

Assign the arbitration level for the High Speed Parallel Port
to "Shared Level 7" (default setting).

If "Shared Level 6" has to be used for the High Speed Parallel
Port, then the other Bus Masters' DMA Arbitration Levels
should be assigned to either 8, A, C or E.

Subject	Author
H027141 HIGH SPEED PARALLEL PORT PROBLEMS	Louis Ohland