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  • Using Bidirectional Parallel Printer Ports

    From Louis Ohland@21:1/5 to All on Thu Apr 28 22:26:39 2022
    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...

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From IBMMuseum@21:1/5 to All on Sun May 1 12:02:51 2022
    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...

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Tomas Slavotinek@21:1/5 to Louis Ohland on Sat May 7 00:05:19 2022
    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...

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)