"Different" ZX81's

Discussions about Sinclair ZX80 and ZX81 Hardware
Moggy
Posts: 3495
Joined: Wed Jun 18, 2008 2:00 pm

Re: "Different" ZX81's

Post by Moggy »

@Lardo

Fwapp reckons that could be a uniquely marked ULA so seeing as it's socketed I demand you remove it and reveal all to the world!! :lol: (just kidding Lardo)

@ Fwapp

it's nice that you're proud of it, some good finds lately. :D
???????????????????????????PIINKEY$?????RND????????????????????????????????????????????????????????PI????????
Lardo Boffin
Posts: 2256
Joined: Sat Nov 26, 2016 2:42 am

Re: "Different" ZX81's

Post by Lardo Boffin »

Moggy wrote: Mon Mar 20, 2017 9:50 pm @Lardo

Fwapp reckons that could be a uniquely marked ULA so seeing as it's socketed I demand you remove it and reveal all to the world!! :lol: (just kidding Lardo)

@ Fwapp

it's nice that you're proud of it, some good finds lately. :D
If you insist!
IMG_5670.JPG
(1.73 MiB) Downloaded 246 times
Although the top of the pcb is cream the base is very much green:-
IMG_5671.JPG
(2.5 MiB) Downloaded 246 times
One of the things I love about buying these is that you never know what you will find when you open the case!

Lardo
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
Fwapp
Posts: 152
Joined: Mon Jun 01, 2015 10:32 pm

Re: "Different" ZX81's

Post by Fwapp »


One of the things I love about buying these is that you never know what you will find when you open the case!

Lardo
Quite true - always exciting to open one up and see what you've got - then have a play :)

There are two other types of ZX81 I'm after now - one is a US issue 3 ZX81 (not a TS1000) and a ZX81 with a serial number. Hopefully that should see me happy with what I've got! :lol:
ZX80, ZX81 - 2C158C Bugged Rom iss.1, 2C158C "kludge fix" iss1, 2C184E iss1, 2C210E iss3, US NTSC iss1 "straight traces", US NTSC iss3 TS1000
Lardo Boffin
Posts: 2256
Joined: Sat Nov 26, 2016 2:42 am

Re: "Different" ZX81's

Post by Lardo Boffin »

Fwapp wrote: Mon Mar 20, 2017 10:17 pm

One of the things I love about buying these is that you never know what you will find when you open the case!

Lardo
Quite true - always exciting to open one up and see what you've got - then have a play :)

There are two other types of ZX81 I'm after now - one is a US issue 3 ZX81 (not a TS1000) and a ZX81 with a serial number. Hopefully that should see me happy with what I've got! :lol:
I have a ZX81 with a serial number on it that I bought a while back and have done nothing with if you are interested? There are some photos on viewtopic.php?f=8&t=1260

PM me if you are interest and I will plug it in and check it works!
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
Fwapp
Posts: 152
Joined: Mon Jun 01, 2015 10:32 pm

Re: "Different" ZX81's

Post by Fwapp »

I have PM'd :)
ZX80, ZX81 - 2C158C Bugged Rom iss.1, 2C158C "kludge fix" iss1, 2C184E iss1, 2C210E iss3, US NTSC iss1 "straight traces", US NTSC iss3 TS1000
Moggy
Posts: 3495
Joined: Wed Jun 18, 2008 2:00 pm

Re: "Different" ZX81's

Post by Moggy »

Lardo Boffin wrote: Mon Mar 20, 2017 10:03 pm
Moggy wrote: Mon Mar 20, 2017 9:50 pm @Lardo

Fwapp reckons that could be a uniquely marked ULA so seeing as it's socketed I demand you remove it and reveal all to the world!! :lol: (just kidding Lardo)

@ Fwapp

it's nice that you're proud of it, some good finds lately. :D
If you insist!

IMG_5670.JPG

Although the top of the pcb is cream the base is very much green:-

IMG_5671.JPG

One of the things I love about buying these is that you never know what you will find when you open the case!

Lardo

An unmarked ULA now there's a rarity nice one. :D
???????????????????????????PIINKEY$?????RND????????????????????????????????????????????????????????PI????????
Lardo Boffin
Posts: 2256
Joined: Sat Nov 26, 2016 2:42 am

Re: "Different" ZX81's

Post by Lardo Boffin »

Moggy wrote: Tue Mar 21, 2017 3:12 pm
An unmarked ULA now there's a rarity nice one. :D
Does that mean I can put it on eBay for £1000,000? :lol:

Seriously I may (will) have to sell some of my recent acquisitions though as I won bids on four of them! One I am def keeping as it is in very good shape.
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: 2256
Joined: Sat Nov 26, 2016 2:42 am

Re: "Different" ZX81's

Post by Lardo Boffin »

Zeddy two of four... I might not post pictures of zeddy three (four hasn't arrived yet) as it is in such nice shape.

A nice working issue three. Picture isn't brilliant but as soon as the next batch of ZX8-CCBs arrive that will soon be sorted.
IMG_5687.JPG
(2.48 MiB) Downloaded 204 times
IMG_5688.JPG
(2.01 MiB) Downloaded 204 times
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: 3495
Joined: Wed Jun 18, 2008 2:00 pm

Re: "Different" ZX81's

Post by Moggy »

A nice board Lardo. :D
???????????????????????????PIINKEY$?????RND????????????????????????????????????????????????????????PI????????
User avatar
Fwapp
Posts: 152
Joined: Mon Jun 01, 2015 10:32 pm

Re: "Different" ZX81's

Post by Fwapp »

Yep - some really nice Zeddies :)
ZX80, ZX81 - 2C158C Bugged Rom iss.1, 2C158C "kludge fix" iss1, 2C184E iss1, 2C210E iss3, US NTSC iss1 "straight traces", US NTSC iss3 TS1000
Post Reply