Category Archives: Retro-Computing

MUSL Compiler Builds a Simple MU5 Program

Posted on May 2, 2019 by rjarratt

I have been slowly working on getting a MUSL compiler that targets the MU5 emulator, with the ultimate goal of compiling the MUSS source code to run on it. The first step is to build a cross compiler that works … Continue reading →

Posted in MU5, MUSS, Retro-Computing | 2 Comments

Teletype Model 33 ASR Ribbon Feed

Posted on March 17, 2019 by rjarratt

In November last year I attended DEC Legacy 2018 and as usual I took along my treasured Teletype Model 33 ASR. I hooked it up as usual to the PDP10 simulator in SIMH to run DEC’s TOPS-20 operating system. You … Continue reading →

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DECstation 5000/240 With the TURBOchannel Extender

Posted on October 7, 2018 by rjarratt

Recently I repaired the H7826 power supply in my TURBOchannel Extender. So now I wanted to get it working with the DECstation 5000/240 it came with. The trouble is, I don’t have the cable to connect the Extender to the … Continue reading →

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H7826 Power Supply Repaired

Posted on September 23, 2018 by rjarratt

After a spell of concentrating on other things I have finally got round to looking again at the H7826 power supply from my TURBOchannel Extender. When I left it back at the beginning of the year I was waiting for … Continue reading →

Posted in Retro-Computing | 3 Comments

Flocoder FLIP Now Processes Its Own Source

Posted on August 12, 2018 by rjarratt

I am at the stage with my MUSS restoration that I can process the Flocoder FLIP source code with my own implementation of FLIP written in Flex and Bison. My MUSL compiler can’t process all the Flocoder source files yet … Continue reading →

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Flocoder Flip Progress

Posted on July 30, 2018 by rjarratt

I haven’t been doing much in the vintage computing arena recently, but I have finally got around to finishing off my crude implementation of Flip. The source code is up on GitHub. My first attempt didn’t work very well. I … Continue reading →

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MUSS Source Code Now Available

Posted on July 3, 2018 by rjarratt

I have received qualified permission to publish the MUSS source code that was recently recovered, as free and open source software. It is available here. I have also made a bit of progress on the MUSS restoration. My implementation of FLIP … Continue reading →

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Flocoder

Posted on May 12, 2018 by rjarratt

I have now got a crude implementation of the Flocoder Flip program written using Flex and Bison. It can take a Flocoder file from the MUSS sources and extract what I hope is compilable MUSL code. The code is on … Continue reading →

Posted in MUSS, Retro-Computing | 4 Comments

MUSS GitHub Project

Posted on May 7, 2018 by rjarratt

For anyone who wants to follow the effort to revive MUSS, I have started a project on GitHub. You can find the repository here. The initial effort is focussed on creating FLIP to translate the Flocoder to compilable MUSL and … Continue reading →

Posted in MUSS, Retro-Computing | 1 Comment

MUSS Source Code

Posted on May 3, 2018 by rjarratt

  MUSS is the Manchester University Software System. It is an operating system that was designed and built at Manchester University for MU5, designed to be portable, and in fact ported to other machines. In October 2017 I asked the … Continue reading →

Posted in MUSS, Retro-Computing | 5 Comments