Thread: Zx81
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Old 14th Mar 2020, 11:31 pm   #65
John Earland
Join Date: May 2013
Location: Middlesbrough, North Yorkshire, UK.
Posts: 442
Default Re: Zx81

Ah-I see - yes thank you. Lovely neat solution you gave me. I shall do it when the transistor arrives!

On a slightly different note, I obtained another ZX81 today-checked inside, unfortunately it has the early ULA you mentioned. Tried it on my modern TV and it gave a black screen-my original ZX81 does work on the modern tv though picture is a bit wobbly but it does work through the aerial socket. Will try the early ZX81 on the crt tomorrow.

Interestingly for my original ZX81, which I will modify, when I plug in a 16k RAM pack the picture quality is significantly reduced on my lcd tv. Very grainy and stripey-Looks like an awful lot of interference. Maybe the mod will help!!
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