Wanted: Zilog Z80, week 17 1982

ZX80 / ZX81 hardware and software requested for either sale or swapping
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Erm
Posts: 205
Joined: Thu Jun 20, 2019 7:07 pm

Wanted: Zilog Z80, week 17 1982

Post by Erm »

For originality (in an Issue 1 Spectrum as it happens) I'm looking for a 1982 Zilog branded Z80 that is as close as possible to week 17. Perhaps someone has a socketed one of that date in a ZX81.

Happy to swap for a newer Z80 or to pay a fair price.
I'm Chris, a Brit in Germany (Chr$ on the QL forum).
Lardo Boffin
Posts: 1486
Joined: Sat Nov 26, 2016 2:42 am

Re: Wanted: Zilog Z80, week 17 1982

Post by Lardo Boffin »

I have an 8204. CPUs were often earlier than the ULA so if nothing better comes along it may be an option?

I have only just got it so would have to test it properly first.

A6FE19DA-4E4B-4AD6-8C02-230A714CE023.jpeg

My issue one has an 8208 Z80 and 8214 ULA.
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
Iss 3 ZXVid
TS 1000 iss 3, ZXPand AY, ZX8-CCB, ZX-KDLX & ChromaSCART
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
Toastrack
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Erm
Posts: 205
Joined: Thu Jun 20, 2019 7:07 pm

Re: Wanted: Zilog Z80, week 17 1982

Post by Erm »

Yes, ok, thanks.

Does it work?
I'm Chris, a Brit in Germany (Chr$ on the QL forum).
Lardo Boffin
Posts: 1486
Joined: Sat Nov 26, 2016 2:42 am

Re: Wanted: Zilog Z80, week 17 1982

Post by Lardo Boffin »

Erm wrote: Thu Jun 03, 2021 7:17 pm Yes, ok, thanks.

Does it work?
I will check it out over the weekend. It boots to the K but thats all I know so far.
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
Iss 3 ZXVid
TS 1000 iss 3, ZXPand AY, ZX8-CCB, ZX-KDLX & ChromaSCART
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
Toastrack
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BarryN
Posts: 65
Joined: Thu Nov 09, 2017 11:34 pm

Re: Wanted: Zilog Z80, week 17 1982

Post by BarryN »

Lardo Boffin wrote: Thu Jun 03, 2021 9:09 pm
Erm wrote: Thu Jun 03, 2021 7:17 pm Yes, ok, thanks.

Does it work?
I will check it out over the weekend. It boots to the K but thats all I know so far.
Well, that's a good start.
Lardo Boffin
Posts: 1486
Joined: Sat Nov 26, 2016 2:42 am

Re: Wanted: Zilog Z80, week 17 1982

Post by Lardo Boffin »

It has happily run The Gauntlet and Rock Crush with a Chroma81, Memotech Keyboard and ‘Spand plugged in for about 10 mins so seems fine. Happy to soak test for an hour at some point if you want?

7B549848-F744-4CA9-8524-5C87F779F91D.jpeg

Hard to believe but the screen is actually white!
687560CB-3391-4A6A-9334-339A9D46C262.jpeg
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
Iss 3 ZXVid
TS 1000 iss 3, ZXPand AY, ZX8-CCB, ZX-KDLX & ChromaSCART
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
Toastrack
User avatar
Erm
Posts: 205
Joined: Thu Jun 20, 2019 7:07 pm

Re: Wanted: Zilog Z80, week 17 1982

Post by Erm »

Thanks. Looks good them. Leave it on for an hour, but only if you have the time.
I'm Chris, a Brit in Germany (Chr$ on the QL forum).
Lardo Boffin
Posts: 1486
Joined: Sat Nov 26, 2016 2:42 am

Re: Wanted: Zilog Z80, week 17 1982

Post by Lardo Boffin »

Erm wrote: Thu Jun 03, 2021 11:58 pm Thanks. Looks good them. Leave it on for an hour, but only if you have the time.
It happily played The Gauntlet for best part of two hours. :D
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
Iss 3 ZXVid
TS 1000 iss 3, ZXPand AY, ZX8-CCB, ZX-KDLX & ChromaSCART
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
Toastrack
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