Lardo buys another zeddy
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- Joined: Sat Nov 26, 2016 2:42 am
Re: Lardo buys another zeddy
An extremely nice issue one bugged ROM with working keyboard.
And mic for some reason…
Edit : 8119 ULA. Fairly early but far from the earliest.
And mic for some reason…
Edit : 8119 ULA. Fairly early but far from the earliest.
Last edited by Lardo Boffin on Wed Jun 14, 2023 3:21 pm, edited 1 time in total.
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
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
- Flatulentia
- Posts: 93
- Joined: Sun May 14, 2023 3:58 pm
- Location: Cambridgeshire, UK
Re: Lardo buys another zeddy
I was watching that listing and wondered what the extra weird looking device was. I'd guessed it looked like a microphone of some kind, so thanks for confirming it.
I won the auction for the other similarly good looking one that went for £31 delivered. Fractured keyboard tails (I can probably get away with cutting those back) but otherwise mint with a great looking UK700 PSU and manual.
I won the auction for the other similarly good looking one that went for £31 delivered. Fractured keyboard tails (I can probably get away with cutting those back) but otherwise mint with a great looking UK700 PSU and manual.
ZX81 with ZiLOG Z84 CMOS Z80, 32KB battery-backed Toshiba 55257 SRAM with charge status LED, Wilf's "Why Wait?" mod and switch-mode 5V regulator. 50/60Hz mode switch, composite video output with Zigg's back porch mod and 1080p60 HDMI output.
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- Posts: 2191
- Joined: Sat Nov 26, 2016 2:42 am
Re: Lardo buys another zeddy
A couple of boxes waiting for me when I got back from work:
The sleeve zeddy works, as does the RAM pack. The postal box zeddy doesn’t boot sadly. Its a kludge fix so fairly early.
All in very nice condition.
The sleeve zeddy works, as does the RAM pack. The postal box zeddy doesn’t boot sadly. Its a kludge fix so fairly early.
All in very nice condition.
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
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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- Posts: 2191
- Joined: Sat Nov 26, 2016 2:42 am
Re: Lardo buys another zeddy
A couple more…
One boots and works fine the other just gives a white screen. The Memopak works fine.
One boots and works fine the other just gives a white screen. The Memopak works fine.
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
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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- Posts: 2191
- Joined: Sat Nov 26, 2016 2:42 am
Re: Lardo buys another zeddy
The zeddy in the full box is a slightly unusual issue one:
I don’t remember having a USA zeddy like this before (although probably have all things considered…)
Having trimmed the keyboard membrane this now seems to be working well and gives a great picture!
I don’t remember having a USA zeddy like this before (although probably have all things considered…)
Having trimmed the keyboard membrane this now seems to be working well and gives a great picture!
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
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
Re: Lardo buys another zeddy
Looking at those inductors just above the reg' I would say this a Sinclair made US ZX81 board, as opposed to a Timex TS100 one, that's been played around with, ( IE had it's conductor strip removed and a UK modulator fitted ), and stuffed into a UK case. Never seen red solder mask on a standard UK board either.
Last edited by Moggy on Tue Aug 01, 2023 10:07 pm, edited 2 times in total.
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- Posts: 2191
- Joined: Sat Nov 26, 2016 2:42 am
Re: Lardo buys another zeddy
The non-working zeddy is a beige PCB with a 649 ROM!
Makes a change from the usual 622 / beige combination I seem to get. This one has a ULA several weeks later than those with the 649.
Now to try to get it to boot…
Makes a change from the usual 622 / beige combination I seem to get. This one has a ULA several weeks later than those with the 649.
Now to try to get it to boot…
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
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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- Posts: 2191
- Joined: Sat Nov 26, 2016 2:42 am
Re: Lardo buys another zeddy
I did wonder about that. Maybe they were short of boards.
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
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
Re: Lardo buys another zeddy
I've edited my post to say that I think it's a Sinclair board made for the US and not a Timex one and has been butchered for UK use.
Re: Lardo buys another zeddy
I must be getting slow in my old age!
The motherboard actually has Sinclair ZX81 USA printed on it DOH!
The motherboard actually has Sinclair ZX81 USA printed on it DOH!