Retro computer homebrew: Orton SC/MP computer
 

This has been under development for some time so, hopefully, all of the bugs have been eradicated!

Re: Retro computer homebrew: Orton SC/MP computer
 

What a phenomenal effort, Karen! :clap:



I admire your ingenuity, patience, and ambition.


I used to write Z80 assembly code and so have a bit of an idea of what's involved, but I'm certain I'd never manage anything like this collection.


dave

Re: Retro computer homebrew: Orton SC/MP computer
 

You are very kind Dave, thank you!

Re: Retro computer homebrew: Orton SC/MP computer
 

Your pretty much a genius Karen amazing work what ever you put your mind to !

Re: Retro computer homebrew: Orton SC/MP computer
 

Nah! If I were a genius I think my bank balance would look rather better :(

I just get fixated and devote too much time to old ideas.

Who else would still be thinking about an 8 bit micro that was significantly under-powered compared to its contemporaries forty years later?

Re: Retro computer homebrew: Orton SC/MP computer
 

Similar-mindset people who think that a 1911 Underwood typewriter is a thing of beauty (guilty as charged, m'Lud) - "The Repair Shop", episode 11, series 3 :)
Guy

Re: Retro computer homebrew: Orton SC/MP computer
 

Hi Karen
Well done on what must have been a mammoth task.
Getting a PIC to produce video for your terminal was a big ask on it's own.
I bet your fingers are sore from counting instruction cycles.

Frank

Re: Retro computer homebrew: Orton SC/MP computer
 

Thank you Frank,

As a project it has been going on for about ten years, so I've probably got the bugs sorted out!

I like PICs because they're very deterministic. I have done some things with PICs that one oughtn't be able to do (like video generation).

I confess I used the Microchip 'SIM' debugging tool, which includes a stopwatch to time sections of code. Even so, there are places where every single cycle is used!