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I just posted a pic of my highly modified ZX81 here https://mobile.twitter.com/njcw/status/1368566103933337603 https://mobile.twitter.com/njcw/status/136856610
by nickcw 6y ago
I just posted a pic of my highly modified ZX81 here
https://mobile.twitter.com/njcw/status/1368566103933337603 https://mobile.twitter.com/njcw/status/1368566103933337603
In honour of the #zx81 40th bday I got mine out the attic. I modified it heavily to have external keyboard, programmable character generator and easy access to swap the ROM. I killed it trying to upgrade to 48k RAM but I haven't the heart to dispose of my first computing love!
In those days I obviously had no fear cutting into the case and soldering stuff on the motherboard! I'm not that brave any more.
- nickt 6y agoLooks very retro cyberdeck!
- JNRowe 6y agoWhat is the keyboard in your photo? The lack of oversized keys has me confused. Also, love that it is a 3,284,741 byte image of a ZX81. And the ,/< because -- presumably -- a dog ate your 1 ;)
- nickcw 6y agoIt is a cast off relay keyboard - easy to wire up to the ZX81. I don't recall where it came from, but I don't think it ever had a 1 key as was common on typewriters back then (you just used l instead).
- JNRowe 6y agoOh, I had absolutely no idea about that. I naively assumed the current number row was original. You've sent me down a rabbit hole that so far includes using f and L to produce a £ too, thanks! For others like me the qwerty page¹ has some info, and some examples of original layouts without a 1 key². ¹ https://en.m.wikipedia.org/wiki/Qwerty https://en.m.wikipedia.org/wiki/Qwerty ² https://en.m.wikipedia.org/wiki/File:QWERTY_1878.png https://en.m.wikipedia.org/wiki/File:QWERTY_1878.png