TRS-80 curiosity

Kelly Leavitt kelly at
Fri Apr 14 08:11:13 CDT 2017

-----Original Message-----
From: cctalk [mailto:cctalk-bounces at] On Behalf Of Bill Gunshannon via cctalk
Sent: Friday, April 14, 2017 8:32 AM
To: cctalk at
Subject: Re: TRS-80 curiosity

> On 4/13/2017 9:07 PM, Fred Cisin via cctalk wrote:
>>> Model I Hard Disk Adapter (40 to 50 pin):
> On Fri, 14 Apr 2017, Bill Gunshannon via cctalk wrote:
>> Nope, it's none of those.
> Can you describe in what ways it differs?
> 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. 

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