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This mini forum is intended to provide a simple means of discussion about the Tandy Radio Shack  TRS 80 Model 4P computer. If you want to share your own experience or memories, or add relevant information about this system: post a message!

  Click Here to add a message in the forum


Monday 4th June 2018
Steve mills (Corvallis or)

Trs80 model 4p for sale

Sunday 1st April 2018
CJ (Virginia)

I own a 4P myself, and thought I would add some more specific technical details -

The 180K disk drives it uses are Tandon brand drives, model TM50-1, belt-driven.
The Z80A CPU is SGS Thompson branded, model Z8400AB1.

Monday 17th July 2017
Jeff Gillis (united states)

Unbelievably, I actually have the original cardboard box for a TRS 80 model 4P that I recovered from my folks attic where it sat undisturbed for decades. The internal packing material is long gone, but the box itself is in very good shape. I was going to flatten it and recycle it unless someone wants it. Any takers?

Monday 12th December 2016
Marcus N. (Germany)
MarNoWeb - virtual vintage Computermuseum

Dear Mr. Bryant, do you still have these manuals and Softwaredisks? I''m about to buy a TRS-80 4p with nothing except the defective machine... I would be so happy if you could send it over here to Germany by Mail postage - of course all on my cost :-)

Tuesday 10th November 2015
Dean Notarnicola (NJ, USA)

Harry and John: Do you still have those Model 4P computers?

Saturday 29th August 2015
Harry Bryant (United States)

I have a TRS80 4P and assoiated manuals and software. I''d gladly donate it to a hobbiest/museum for the cost of shipment.

Thursday 15th January 2015
Chuck Rose

My model 4P had double sided drives just like the 4D. I developed with it mostly in CP/M mode because it had the bigger market compared to the model 4.

Monday 13rd October 2014
John E Iacono (USA)

I have a 4P that has not been turned on for about 20 years. Also several hundred dsdd floppies, if anyone is interested. We used it in our accounting company for several years.

Thursday 10th November 2011

I have this computer but do not have a power cord. Would any power cord work?

Thursday 10th November 2011

I have this computer but do not have a power cord. Would any power cord work?

Saturday 4th June 2011
James (USA)

I am still in possession of the Model 4P that my father purchased for me in 1984. (my junior year of HS.) The unit is still in functional condition, although the floppy''s are getting worn out. Anyone know where I could find replacement disks for it ??

Wednesday 21st October 2009
Charles Rose (Maine, USA)

Ahhh yes, the TRS-80 4P. I had one of these machines as my main computer in the mid/late 80''s. I used it to keep the books for my freelance software company as well as developed some software for it (mainly a Video renting system) in Model III mode. I have not-so-fond memeories of hauling this thing through various airports to make connecting flights. I think the only thing that made it portable was the handle in the case lol. It was seriously a very heavy ''portable'' machine.

Tuesday 20th June 2006
Andy (Washington)

Well, went to my local Goodwill today and bought one of these babys for a smokin price of 5 bucks! Anyone interested in snaging this?

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