Hello all.
Like many of you, I was an 80s kid when I got my ZX81. I ordered the $100 kit, but they were apparently out of stock, so I received the pre-built. It's an issue one, but with straight (not curvy) traces. I recently brought it out of storage in order to resurrect it.
Last week I upgraded the RAM to 32K, installed the vla81, gutted the RF modulator, replaced the two electrolytic caps, and replaced the regulator with a buck module. Works great!
Still to come: upgrade the ROM to a big bang and get a new membrane.
At the moment, I'm enjoying re-reading the Sync magazines on archive.org.
I also have three TS1000 units. I'll probably upgrade one of them and leave the rest for spare parts.
Greetings from California!
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1024MAK
- Posts: 5118
- Joined: Mon Sep 26, 2011 10:56 am
- Location: Looking forward to summer in Somerset, UK...
Re: Greetings from California!
Hello and welcome to our forum Barry!
I hope you enjoy this forum
Looks like you are quite far in the tinkering league
Mark
I hope you enjoy this forum
Looks like you are quite far in the tinkering league
Mark
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
Re: Greetings from California!
Barry,
Greetings from another Californian. There is a Timex/Sinclair Zoom group that meets twice a month. Details are on www.timexsinclair.org.
Tim Swenson
Greetings from another Californian. There is a Timex/Sinclair Zoom group that meets twice a month. Details are on www.timexsinclair.org.
Tim Swenson