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computers / comp.sys.ibm.ps2.hardware / Re: Using Bidirectional Parallel Printer Ports

SubjectAuthor
* Using Bidirectional Parallel Printer PortsLouis Ohland
+- Re: Using Bidirectional Parallel Printer PortsIBMMuseum
`- Re: Using Bidirectional Parallel Printer PortsTomas Slavotinek

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Using Bidirectional Parallel Printer Ports

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From: ohland@charter.net (Louis Ohland)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Using Bidirectional Parallel Printer Ports
Date: Thu, 28 Apr 2022 22:26:39 -0500
Organization: csiph.com Internet News Service
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 by: Louis Ohland - Fri, 29 Apr 2022 03:26 UTC

http://ps-2.kev009.com/ohland/parallel/Using_Bidirectional_Parallel_Printer_Ports.html

Odd, the author sez the Model 50 needs a QBASIC program to set it to BiDi.

Near the end, he says "forcing" non-BiDi to BiDi can be hard on the
drivers. XIRCOM used that method on early PCs or PS/2s...

Re: Using Bidirectional Parallel Printer Ports

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Subject: Re: Using Bidirectional Parallel Printer Ports
From: ibmmuseum@gmail.com (IBMMuseum)
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 by: IBMMuseum - Sun, 1 May 2022 19:02 UTC

> Odd, the author sez the Model 50 needs a QBASIC program to set it to BiDi.

He's probably just referring to the parallel port being in SPP mode after boot...

Re: Using Bidirectional Parallel Printer Ports

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From: slavotinek@gmail.com (Tomas Slavotinek)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: Using Bidirectional Parallel Printer Ports
Date: Sat, 7 May 2022 00:05:19 +0200
Organization: csiph.com Internet News Service
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 by: Tomas Slavotinek - Fri, 6 May 2022 22:05 UTC

Added as well, including the code samples:
https://www.ardent-tool.com/comms/Using_Bidir.html

On 29.04.2022 5:26, Louis Ohland wrote:
> http://ps-2.kev009.com/ohland/parallel/Using_Bidirectional_Parallel_Printer_Ports.html
>
>
> Odd, the author sez the Model 50 needs a QBASIC program to set it to BiDi.
>
> Near the end, he says "forcing" non-BiDi to BiDi can be hard on the
> drivers. XIRCOM used that method on early PCs or PS/2s...

computers / comp.sys.ibm.ps2.hardware / Re: Using Bidirectional Parallel Printer Ports

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