ZX Spectrum (and ZX81) ULA gallery

Updated: 4 Sep 2020

I decided to create this ULA gallery to give people a look at the timeline of probably the most important part of the ZX Spectrum (and ZX81).
It’s in chronological order that should give the best impression.

I will update this list with photos you guys send me: send your ULA photos to: ula@bytedelight.com.
And if you are able to dig into these details (but if not, please send me just your ULA photos!), please add info like:

  • what board it’s in
  • general temperature after 15 minutes (outside case)
  • hotspot temperature after 15 minutes (outside case)
  • other technical details

More webpages about the ZX Spectrum ULA:

There are probably errors on this page. If you find any, please let me know: ula@bytedelight.com.

(C) 2017 Ben Versteeg – ask me for distribution of content of this page please.

The Inconvenient Truth – dying ULAs


Well, if you’re using the machine with that ULA anyway.

After 35 years, the ZX Spectrum ULA has had a long and interesting life, and during the last 5-10 years it seems more and more ULA chips are passing away.
The main cause is heat! Check out this video: https://www.youtube.com/watch?v=bY8dnEl-V7k

The ONLY proper solution to extend the life of an original ULA chip is to put a heatsink on it with the size of the chip itself.
The ones that many people use is the Fischer Elektronik ICK 40 B, which can be obtained from eg. Reichelt , Conrad or somewhere else.
You need thermal paste and add glue to mount the heatsink, or use thermal glue.

There are a couple of ULA replacements nowadays, but if you can save your original ULA chip, please make sure to do so.
Otherwise they will wind up like these… RIP 🙁

My ULA died!! 🙁

No sweat!

Get a replica ULA like:

ZX81:

ZX Spectrum 16/48K:

ZX Spectrum 128K:

 

And now for the real gallery…

8102 ZX81 ULA

23 Jan 2020 From Brendan Alford: “Have an 8102 ULA, you won’t see any earlier ?”

8102 ZX81 ULA

24 Jan 2020 From Ian Gledhill: “Here’s some more. The earliest [ed: this one], a middle period one (but UK made so L@@K R@RE) and the latest ULAs known.”

8109 ZX81 ULA

22 Jan 2020 Stuart Cowan beat everyone so far 😉 He sent in a pic ̶o̶f̶ ̶t̶h̶e̶ ̶o̶l̶d̶e̶s̶t̶ ̶(̶Z̶X̶8̶1̶)̶ ̶U̶L̶A̶ ̶s̶o̶ ̶f̶a̶r̶: “Something for your gallery”

8119 ZX81 ULA

22 Jan 2020 From Idriz Delic: “ZX81 issue 1”

8120 ZX81 ULA

23 Jan 2020 From Thomas Ahn Kolbeck: “From ZX81 Issue 1”

8130 ZX81 Ferranti ULA2C184E

From Piotr K. aka “Kacper”, from Poland: “Ula from Zx81 issue one”

8146 ZX81 Ferranti ULA 2C184E

26 Jan 2020 from Stephen Bennett: “A couple of early ones… including one of the 8102s :)” (original photo includedn a 8102 obviously)

8150 ZX81 ULA

24 Jan 2020 From Chris Bellman: “Wow, 8150 is the earliest I have.”

8214 Ferranti ULA 5C102E

21 Jan 2020 From Mark Smith: “You need a pic of the first ula batch – 8214. Note the lack of a cockroach on this machine (it doesn’t have a serial number either, but used to belong to Eric Deeson who wrote for Your Computer magazine among others). Hence machine code games don’t work on this one :)”

8217 Ferranti ULA 5C102E

From Brendan Alford (22-12-17)

Inside an issue 1, s/n001-011754

8220 Ferranti ULA 5C102E

From Chris Taylor (3 April 19)

Found inside an Plus case (unfortunately).
Still very lovely!

8229 Ferranti ULA 5C102E

From Mark Smith (22-12-17)

8233 ZX81 ULA 2C210E

24 Jan 2020 From Ian Gledhill: “Here’s some more. The earliest, a middle period one [ed: this one] (but UK made so L@@K R@RE) and the latest ULAs known.”

8237 Ferranti ULA 5C112E

From Stephen Bennett (22-12-17): “This is mine – Issue 2, rubbey key, S/N D01-004070”

8237 Ferranti ULA 5C112E

From Luis Correia: “And some more. These are all the ula I have outside my spectrums. From my 30year plus collection”

8244 Ferranti ULA 5C112E-2

From Ian Gledhill (07-01-18) – “One from the vaults”

8245 Ferranti ULA 2C201E

4 Feb 2020 from Thomas Ahn Kolbeck Kjær Heckmann: “Another one from me ULA 8245 from ZX81 issue 3”

8250 Ferranti ULA 2C210E (ZX81)

From Luis Correia: “And some more. These are all the ula I have outside my spectrums. From my 30year plus collection”

8301 Ferranti ULA 5C112E

From Brendan Alford (27-12-17)

Bottom:

8304  Ferranti ULA 5C112E-3

24 Jan 2020 From Chris Bellman: “8304 from a 16k spectrum issue 2 for your gallery”

8307 Ferranti ULA 5C112E

From Filippo F. (9 May 2021): “Hi, here is a picture of my ULA if you want to add this to the gallery. It’s a issue 2 board, FERRANTI ULA 5C112E 8307 (this one is missing in the gallery if i’m not wrong).
Sadly it’s dead, my ZX Spectrum powers on with green screen and lines. Already replaced lower RAM, tested transistors, voltages and capacitors. I think it’s the ULA.”

8310 Ferranti ULA 2C210E

From Miguel C. (10 March 2020): “I have about 30(!) of these ULA still in their anti-static IC tubes! I’ve found them together with new rubber keyboards for the Timex Sinclair 1500 in a box on a warehouse. The guy told me that they came from Timex Portugal factory, so I belive these are New Old Stock never used on the assembly line.”

8312 Ferranti ULA 6C011E

From Ian G. (7 Jan 2018): “6C011E made in the UK. This is an NTSC ULA roughly equivalent to a 6C001E-6, but gives a 60Hz video signal instead of 50Hz”

8312 Ferranti ULA 5C112E-3

From Ian G. (7 Jan 2018): “5C112E-3 made in the UK”

8314 Ferranti ULA 5C112E-3

From Mark S. (22 Dec 2017)

8319 Ferranti ULA 5C112E-3

From Ben Versteeg (22 Dec 2017)

8320 Ferranti ULA 6C001E-5

From Ben Versteeg (22 Dec 2017)

8320 Ferrantu ULA 5C112E-3

From Sebastian L. (16 March 2020): “Saw you have a collection of these. Not sure if you care for any more, but here you go ?”
Yes we do care for more!

8322 Ferranti ULA 6C001E-5

From Ian G. (7 Jan 2018): “Philippines 6C001E-5 with tall font.”

8324 Ferranti ULA 6C001E-5

From Ian G. (7 Jan 2018): “Probably made in the Philippines again, marked 6C00IE-S instead of 6C001E-5”

8326 Ferranti ULA 6C001E-5

From Mark S. (22 Dec 2017)

8328 Ferranti ULA 6C001-6

From Ian G. (7 Jan 2018): “Wide, squared font 6C001E-6, again probably Philippines”

8329 Ferranti ULA 6C001E-6

From Piotr K., aka “Kacper”, from Poland: “Zx48 issue two”.

8332 Ferranti ULA 6C001E-6

From Ian G. (7 Jan 2018): “6C001E-6 made in the UK (much more reliable than the Suicide ULA, which is the -6 made in the Philippines)”

8334 Ferranti ULA 6C001E-6

From Ben Versteeg (5 Jan 2018)

8335 Ferranti ULA 6C001E-6

From Ian G. (7 Jan 2018): “Philippines 6C001E-6 with squared font”

8339 Ferranti ULA 6C001E-6

From Ben Versteeg (22 Dec 2017)

8345 Ferranti ULA 6C001E-6

From Mark S. (22 Dec 2017)

8348 Ferranti ULA 6C001E-6

From Bora Y. (11 May 2021): “This is my one an only still working suicide ULA. Fitted from factory to a very late production issue 2 48K, bought new in Jan 1984 in London.”

8406 Ferranti ULA 6C001E-7

From Luis C. (20 Jan 2020)

8410 Ferranti ULA 6C001E-6

From Ben Versteeg (22 Dec 2017)

8410 Ferranti ULA 6C001-7

From Thomas H. (22 Dec 2017): “Inside a Issue 4B S/N 037-269574”:

8410 Ferranti ULA 6C001E-7

From Ben Versteeg (22 Dec 2017)

8411 Ferranti ULA 6C001E-7

From Ian G. (7 Jan 2018): “Wide print 6C001E-7, probably made in the Philippines”

8412 Ferranti ULA 6C001E-6

From Ben Versteeg (5 Jan 2018)

8418 Ferranti ULA 6C001E-7

From Milan S. (22 Jan 2020): “Nice piece of 8418”

8420 Ferranti ULA 6C001E-7

From Mark S. (22 Dec 2017)

8438 Ferranti ULA 6C001E-7

From Luis C.: “And some more. These are all the ula I have outside my spectrums. From my 30year plus collection”

8439 ZX81 ULA 2C210E

From Ian G. (24 Jan 2020): “Here’s some more. The earliest], a middle period one (but UK made so L@@K R@RE) and the latest ULAs known. [ed: this one]”

8442 Ferranti ULA 6C001E-7

From João V. (10 Feb 2020): “Found this ULA to add to your collection. 8442 6C001E-7 no logo. It’s from a 48K+ issue 6A.”

 

8444 Ferranti ULA 6C001E-7

From Mark Smith (22 Dec 2017)

8446 Ferranti ULA 6C001E(-6)

From Ben Versteeg (22-12-17)

8446 Ferranti ULA 6C001E(-6)

From Ben Versteeg (22-12-17)

8447 Ferranti ULA 6C001E-7

From Bernhard (19-01-20) –
“I´ve attached Photo of 48k ULA FERRANTI ULA 6C001E-7 8447 which I can´t find on yet your „ZX Spectrum ULA gallery“.
It was on a Issue 4 S Board.
As I only have the naked, untested board here.”

8448 Ferranti ULA 6C001E-7

From Ian Gledhill (07-01-18) – “Square font 6C001E-7. Philippines again?”

8448 Ferranti ULA 6C001E-7

From Luis Correia (20-1-2020)

8449 Ferranti ULA 6C001E-7

From Anthony S. (11 May 2021): “1983 issue 4s. As hot as the suns core within 30 seconds actually did damage to my finger it got so hot.”

8507 Ferranti ULA 6C001E-7

5 August 2020 From Thomas H.: “From Issue 4S”.

8519 Ferranti ULA 6C001E-7

21 Jan 2020 From Rui R.: “48K Issue 3, 1983” (machine where it is in).
Andy Shepherd replied: “date stamp is 1985, guess it got replaced at some point?”
Rui F Ribeiro replied: “Probably. This 48K had repairs and a new Z80 from Zilog replacing the original NEC one.”

8608 Ferranti ULA7K010E5

From Stephan E. (21-01-18)

This is the ULA for a ZX Spectrum 128K or (grey) +2.

8623 Ferranti ULA 6C001E-7

From Brendan A. (27-12-17)

8625 Ferranti ULA 6C001E-7

From Brendan A. (27-12-17)

8629 Ferranti ULA 6C001E-7

From Ben Versteeg (22-12-17)

8711 Ferranti ULA 6C001E-7

From Piotr K. aka “Kacper”, from Poland: “Hello Ben, I found your website about Ula do zx spectrum. Nice thing, good job. 1987 Hive from 11 weeks is missing in your gallery. I am sending a photo to be completed.”

8720 Ferranti ULA6C001E-7

From Brendan A. (27-12-17)

Brendan said: “I think the 8720 ULA is the last batch produced by Ferranti prior to the Plessey takeover”.

8816 Plessey ULA 6C001E-7

From Brendan A. (27 Dec 2017)

8822 Plessey ULA6C001E-7

From Ben Versteeg (22 Dec 2017)

I got this info from Ian Gledhill about Plessey:

This one seems to spread the heat quite well: average temperature is about 39 degrees Celsius and 41 at the hotspot outside a case.

8936 PS ULA6C001E7

From Brendan Alford (27-12-17)

8936 Plessey ULA 6C001E7

From Ian Gledhill (07-01-18) – “Plessey 6C001E-7 with logo. UK made?”