Lardo buys another zeddy
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- Joined: Sat Nov 26, 2016 2:42 am
Re: Lardo buys another zeddy
A fairly nice working issue one with a bonus keyboard. But no feet.
Strangely deformed top left corner. There is no sign of impact damage inside to suggest something heavy was dropped onto it. Maybe thats how it came out of the mold?
Nicely socketed.
Strangely deformed top left corner. There is no sign of impact damage inside to suggest something heavy was dropped onto it. Maybe thats how it came out of the mold?
Nicely socketed.
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
Looks like a put together job. Issue 1 board with later ULA, ROM and Zilog CPU.
The "NO K" on the heat sink looks ominous.
The "NO K" on the heat sink looks ominous.
Re: Lardo buys another zeddy
Looks like heat damage. Maybe the previous owner was a hot girl?
In theory, there is no difference between theory and practice. But, in practice, there is.
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- Posts: 2173
- Joined: Sat Nov 26, 2016 2:42 am
Re: Lardo buys another zeddy
I thought that about NO K but it boots fine. The picture is far from great but that won’t matter soon.
One of the internal screws was in the wrong place so clearly been messed around with.
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: 2173
- Joined: Sat Nov 26, 2016 2:42 am
Re: Lardo buys another zeddy
An interesting thought!
I was wondering about heat damage but couldn’t think of any way it could sink like that without having more of an effect? But I guess I will never know. The guy who sold it found it in a loft clearance I think.
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
My first thought was that "N O K" was an abreviation of "Not OK". However it makes more sense that the abreviation is "NO K".
- 1024MAK
- Posts: 5120
- Joined: Mon Sep 26, 2011 10:56 am
- Location: Looking forward to summer in Somerset, UK...
Re: Lardo buys another zeddy
Maybe the ULA and/or the Z80A were renewed to fix the fault. We don’t really know how old the NO K writing is, and the ULA and Z80A have newer date codes compared to the other parts.
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.
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- Posts: 2173
- Joined: Sat Nov 26, 2016 2:42 am
Re: Lardo buys another zeddy
A nice working issue three with stick on FileSixty keyboard (https://sinclairzxworld.com/viewtopic.p ... 961#p48961):
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
Is that RAM chip a 4801 type 1KB static memory? I'm used to seeing the two smaller RAM chips, not the single larger chip
- 1024MAK
- Posts: 5120
- Joined: Mon Sep 26, 2011 10:56 am
- Location: Looking forward to summer in Somerset, UK...
Re: Lardo buys another zeddy
Actually that one looks like a NEC µPD4016 which is a 2k x 8 SRAM.
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.