• TRS-80 Model I Floppy Repair

    03 Jul | 16
    • in Electronics • 
    • in TRS-80 • 
    • by FozzTexx

    Another repair project that I’ve had sitting around for quite a while is a TRS-80 floppy drive. It was another “untested” item that I got for a reasonable price off eBay. When it arrived I hooked it up and it didn’t work. A little bit of investigation and I found that the spindle motor wasn’t turning on. Again I got distracted with something else and put the project aside for another time. Precariously balancing I didn’t want to have to test the drive by...

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  • Doing Linux Sysadmin Tasks From Your 8-Bitter

    17 Jun | 16
    • in Raspberry Pi • 
    • in Retro • 
    • by FozzTexx

    You decided to "work" from home and you're having a blast killing aliens, rescuing princesses, and finding buried treasure. And of course right while you're in the middle of solving the world's hardest puzzle an urgent call comes in from the office. Of course that means you’re going have to get up and go sit at another computer to ssh in and see what's going on. Wouldn’t it be nice if you didn’t have to do that? Using a combination of tcpser and...

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  • Linux plus CP/M plus assembly equals LASM

    12 Jun | 16
    • in TRS-80 • 
    • by FozzTexx

    With the TRS-80 Model II working one of the first things I did with it was to send the world’s first tweet from a TRS-80 Model II. To do that I used Kermit for CP/M. World's first tweet from a @RadioShack #TRS80 Model II made in 1979! https://t.co/5trIKlhBqW pic.twitter.com/2vJffAAhGb — Chris Osborn (@FozzTexx) June 2, 2016 The TRS-80 Model II support in Kermit is missing hardware flow control support however which means that it’s very prone to dropping...

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  • This Letter Quality Printer Is Now Fully Armed and Operational

    08 Jun | 16
    • in Retro • 
    • by FozzTexx

    This article is a followup to my previous article about trying to open and repair this typewriter. It's open! Bob Will didn’t have a service manual for my Smith Corona Memory Correct 400 Messenger but he did let me in on the secret to getting a mid ‘80s Smith Corona typewriter open: pry really hard. Yes really! Before you do that you want to remove the two screws near the platen. After taking out the screws the only thing holding the cover on is a couple of large metal posts...

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  • It’s User Serviceable if You Have Gift Wrap and Weather Strip

    04 Jun | 16
    • in Electronics • 
    • in TRS-80 • 
    • by FozzTexx

    My TRS-80 Model II Last weekend one of my usual sources of inspiration, @duhproject, received a Commodore 128. A lot of people on Twitter started talking about  their  128s, so I had to get mine out too. I thought it would be interesting to try out a true 80 column terminal program under CP/M since it was something that the 128 could do that that 64 doesn’t. It didn’t take long before I decided that running CP/M from a 5.25” drive wasn’t “CP/M...

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