#: 19709 S12/OS9/68000 (OSK)
    13-Feb-94  16:33:09
Sb: #Printer Problems
Fm: Bob van der Poel 76510,2203
To: All

Can one of the hardware, expert types help me out? I am having some very
frustrating experiences in getting my computers to work with a printer switch I
recently purchased... All I'm trying to do is to get two computers to share one
printer...surely not a difficult task! Here is the hardware:

    Printer - Epson Action Laser II with Parallel interface
    Switch - Agiler 4-in, 1-out auto selecting switch,
             power apparently from the printer???
    Print Buffer - 128K Microfazer parallel-parallel,
                   power from a remote 'cube'
    Computer #1 - MM/1 extended
    Computer #2 - MVME 147S-1 (68030)

I have determined that the following setups work:

    MM/1 --> Printer
    MM/1 --> Buffer --> Printer

    MVME --> Printer
    MVME --> Switch --> Printer
    MVME --> Buffer --> Switch --> Printer

The following configurations do not work:

    MM/1 --> Switch --> Printer

This seems to skip every other, or more, character. Apparently this is caused
by the low logic levels on the MM/1....So, I put the buffer on the circuit.

    MM/1 --> Buffer --> Switch --> Printer

With this setup the buffer shows "ERROR" and nothing gets printed.

This doesn't appear to make a lot of sense. After all, the buffer should appear
as a printer to the switch and any level problems should be between the MM/1
and the buffer. The other configurations indicate to me that the switch and the
buffer are okay.

Any ideas?

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