Hi,
Someone has probably asked this already so apologies if they have.
The Minstrel clone has both old and new ROMz which can be switched - so essentially it'll run as a ZX81 in FAST mode.
Is it possible to add in some upgrade to make it run in ZX81 SLOW mode?
Thanks,
Shaun
ZX80 Minstrel Clone
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Re: ZX80 Minstrel Clone
You may be able to adapt Grant Searle's Slow-mode NMI/Sync generation circuit - see his web page here
Mark
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: ZX80 Minstrel Clone
Thanks for the tips!