TRS-80 curiosity

Peter Cetinski pete at
Fri Apr 14 08:35:35 CDT 2017

On Apr 14, 2017, at 9:11 AM, Kelly Leavitt via cctalk <cctalk at> wrote:
>> On another note, the box is labeled "To EI Screen Printer Port".
>> Not sure what that means as the EI has a "Line Printer Card Edge"
>> and not something specific to the Screen Printer.
> Well, that explains it all then.
> The screen printer connected to the expansion interface via a dedicated cable. 

The EI expansion port was originally called the Screen Printer port because that was the only accessory that connected directly to the TRS-80 bus.
I’m not sure if this cable was for the Screen Printer as I always thought that was a straight through cable.  But, the manuals do not indicate either way.

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