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Thank you
Mark
Quoting posts
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- 1024MAK
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Quoting posts
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert 
We are now rapidly approaching the Autumn system
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb.
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp


We are now rapidly approaching the Autumn system

Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb.