Strange and Possibly Wonderful Cable

From: Tothwolf <>
Date: Sat Jan 5 20:40:53 2002

On Sat, 5 Jan 2002, Tony Duell wrote:

> I've worked on Tandy 8 bit machines since the model 1. I've got
> schematics of the M1 expansion interface. M1 'pregnant cable' printer
> interface, M3, M4, M100, etc to hand.
> And I can't think of one machine that used a '4 bit interface'. They all
> have the conventional 8 data lines, strobe, and busy. Tandy did do some
> unconventional things with the other, lesser used, handshake lines at one
> point, but I've used non-Tandy printers with the M1, M4 and M100 with no
> problems.
> What machine and/or printer are you thinking of?

I was referring to bi-directional parallel communication on a model 1000.
This is most often needed for laser printers and most newer printers.
Rather than duplicate the information someone else has already documented,
I'll just provide a link:

Received on Sat Jan 05 2002 - 20:40:53 GMT

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