Lardo buys another zeddy

ZX80 / ZX81 hardware and software offered for sale or swapping
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1024MAK
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Re: Lardo buys another zeddy

Post by 1024MAK »

Lardo Boffin wrote: Sun Nov 28, 2021 4:35 pm I may need to do something with the ULA socket though! :lol:
I thought that was normal for Sinclair’s quality control… :lol:

Thank yourself lucky they actually soldered all the connections :lol:

Mark
Lardo Boffin
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Re: Lardo buys another zeddy

Post by Lardo Boffin »

A nice issue one, working, bugged ROM. But it doesn’t say 550 on it! Maybe a quite early ROM?

9727B3F9-D70A-4303-98CD-1A55A05F9E94.jpeg
52D834BC-5191-4C66-BE94-7724CB0046B3.jpeg

Still needs a bit of a clean. :D


Picture is dark but rather good!

B1FA6FE5-8AFA-4ACF-A88E-30EB173372E7.jpeg
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
Moggy
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Re: Lardo buys another zeddy

Post by Moggy »

Lardo Boffin wrote: Fri Dec 03, 2021 2:58 pm A nice issue one, working, bugged ROM. But it doesn’t say 550 on it! Maybe a quite early ROM?


9727B3F9-D70A-4303-98CD-1A55A05F9E94.jpeg

52D834BC-5191-4C66-BE94-7724CB0046B3.jpeg


Still needs a bit of a clean. :D


Picture is dark but rather good!


B1FA6FE5-8AFA-4ACF-A88E-30EB173372E7.jpeg
The logo looks like it could be a Signetics manufactured chip but they usually used a solid "S" rather then the composite letter s shown here.
Moggy
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Re: Lardo buys another zeddy

Post by Moggy »

It looks like the ROM is from the other side of the pond and made by a company called Solid State Inc.

https://how-to.fandom.com/wiki/How_to_i ... _logos/P-T

Just scroll down to the "S" section to see info re the company.
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Lardo Boffin
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Re: Lardo buys another zeddy

Post by Lardo Boffin »

Interesting link thanks!
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
Lardo Boffin
Posts: 1762
Joined: Sat Nov 26, 2016 2:42 am

Re: Lardo buys another zeddy

Post by Lardo Boffin »

A ZX81 with this stuck to it is due to arrive next week (argh - another one to freeze my fingers on refurbishing in the garage…):

8488640F-A0D4-4FFC-900F-07FB7F86D20D.png

I assume it is a stick on keyboard for maybe a different programming language? Anyone recognise it?
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
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mrtinb
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Re: Lardo buys another zeddy

Post by mrtinb »

Looks like a stick on keyboard for some Forth, as it has the char @ ! [ ] which are used extensively in Forth.
Martin
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ZX81, Lambda 8300, Commodore 64, Mac G4 Cube
Moggy
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Re: Lardo buys another zeddy

Post by Moggy »

It's the overlay to use with Artic's ZX Forth which is on tape software so the zeddy should have a normal ROM fitted, unless somebody has managed to burn said Forth to an EPROM. In which case get rid and fit a standard ROM because as Forths go it's pretty crap! :lol:

What did the sellers advert say Lardo about this little zeddy?
Lardo Boffin
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Re: Lardo buys another zeddy

Post by Lardo Boffin »

Moggy wrote: Fri Dec 03, 2021 8:43 pm
What did the sellers advert say Lardo about this little zeddy?
Very little! Untested, no way to test, given to him so no idea what any of it does. Pretty much the usual! :shock:
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
Moggy
Posts: 2756
Joined: Wed Jun 18, 2008 2:00 pm

Re: Lardo buys another zeddy

Post by Moggy »

Look forward to seeing its innards when it arrives. :D
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