Lardo buys another zeddy

ZX80 / ZX81 hardware and software offered for sale or swapping
Lardo Boffin
Posts: 1833
Joined: Sat Nov 26, 2016 2:42 am

Re: Lardo buys another zeddy

Post by Lardo Boffin »

Looks like it had a hard life before being fitted!

784FC00A-054A-4310-8269-B552C6C66A98.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
Lardo Boffin
Posts: 1833
Joined: Sat Nov 26, 2016 2:42 am

Re: Lardo buys another zeddy

Post by Lardo Boffin »

A very nice indeed issue one with a seemingly working 32K MEMOPAK (boots to K after a suitable delay).

3CA36A3F-674D-4C3F-AF0E-A084137CFAD2.jpeg
8FD9A4D0-B858-4C21-AFB2-AC0E37384869.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
User avatar
1024MAK
Posts: 4329
Joined: Mon Sep 26, 2011 10:56 am
Location: Looking forward to summer in Somerset, UK...

Re: Lardo buys another zeddy

Post by 1024MAK »

Lardo Boffin wrote: Wed Oct 26, 2022 1:21 pm Looks like it had a hard life before being fitted!
That looks like it’s a ceramic DIL/DIP SRAM chip. For some reason, they often look less good compared to plastic DIL/DIP chips.

A ceramic chip feels colder to the touch compared to a plastic chip (obviously this is with the board at room temperature and not having been powered up recently). Also you can see different colours on the sides where the legs enter the body.

So on this Zeddy, are you going to remove LK1 and fit LK2 to see if you get 2048 wonderful bytes?

Mark
Lardo Boffin
Posts: 1833
Joined: Sat Nov 26, 2016 2:42 am

Re: Lardo buys another zeddy

Post by Lardo Boffin »

Not really got time to experiment to be honest!

It is now included here : https://sinclairzxworld.com/viewtopic.p ... 891#p48891 if anyone wants to give it a try!
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: 1833
Joined: Sat Nov 26, 2016 2:42 am

Re: Lardo buys another zeddy

Post by Lardo Boffin »

A nice working issue three and yet another FileSixty keyboard! These things are like buses…

3D189A9E-C69A-4EDA-B38D-86F7E6D7683C.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
Lardo Boffin
Posts: 1833
Joined: Sat Nov 26, 2016 2:42 am

Re: Lardo buys another zeddy

Post by Lardo Boffin »

A nice bunch of zeddy with another FileSixty! The zeddy, RAM pack and PSU work not sure about the tapes.

D48709B0-EADE-4F1D-9E89-47B6E91C0C65.jpeg

Another yellow / cream / beige motherboard with a 622 ROM.
1D6CBDF9-971D-4775-ADC9-3137148673E8.jpeg

51FDF4FD-54FE-4CFF-8EAD-5A3A75A917E4.jpeg
Last edited by Lardo Boffin on Thu Nov 17, 2022 3:20 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
Lardo Boffin
Posts: 1833
Joined: Sat Nov 26, 2016 2:42 am

Re: Lardo buys another zeddy

Post by Lardo Boffin »

I also have no idea if the microphone is related?


Possibly part of this?

D4F1659C-974D-4933-8988-ACA2E2C0E406.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
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