Earliest examples of each machine?

[steve3000]

we have all seen an issue 1 now that one has just sold on eBay

for £331 just for the original board, not the rest
...pics or it did not exist :

There's also a photo of an issue 1 pcb with the same style printed serial number in the PCW magazine review from Jan 82. It was #10, and (probably coincidence) also missing the video-out BNC connector, as was the one on eBay.

[ask_nz]

That issue one is very interesting - love the hand written serial number.

Just noticed that the keyboard circuit on that Issue 1 photo from the magazine is totally different to issue 2 keyboards. Apart from the speaker - the circuit seems to be on the upper side as you can see green and very distinct upper side copper tracings. Makes me think that they decided to transfer the circuit to lower side on later designs.

Totally different from issue 2/3 single sided keyboard circuit (which I believe are similar to issue 4/7 except the speaker's glued on and has no speaker mounting holes).

Anyone have any ideas about the issue 1 keyboard?

Ade.

[z0m8ied0g]

Got this machine this week...

Issue 2
Serial: 000338

I have another 3 very similar but they missing serials on the outside. Will open them up and have a look to see if they have internal numbers.

[tom_seddon]

Issue 3 Beeb with serial number ICL 003253 for sale on eBay: https://www.ebay.co.uk/itm/Acorn-BBC-B- ... 4159619153

--Tom

[iamaran]

My ICL issue 3 A->B 003353.

[stuslayer]

Currently on eBay with serial number ALA-01 - 000333, Electron: https://www.ebay.co.uk/itm/ACORN-ELECTR ... 4902.l9144

[daveejhitchins]

07-ALA-01 - 000333 - Not sure how significant the 07 is?

Have a close look at the expansion connector it looks quit pitted, which may indicate poor storage!

Dave H

[1024MAK]

Looks like it has been stored somewhere damp, looking at the cassette, RGB, composite video and Modulator connectors on the side.

07-ALA01-000333 Electron

07-ALA01-000333 Electron

Mark

[martinw]

I’m top of a list, well top of part of a list, I’ve never been top of a part of a list before

Here’s my B+ in all of her pimped out finery

Martin

[ask_nz]

Looks like it has been stored somewhere damp, looking at the cassette, RGB, composite video and Modulator connectors on the side.

555BBE4C-D164-4781-99AD-285FE43B8CFA.jpeg

9EC349B0-312F-44EE-A41A-4039EB516160.jpeg

Mark

Yep - that's a winner

[ask_nz]

I’m top of a list, well top of part of a list, I’ve never been top of a part of a list before

Here’s my B+ in all of her pimped out finery

Martin

Nice

[ask_nz]

Got this machine this week...

Issue 2
Serial: 000338

I have another 3 very similar but they missing serials on the outside. Will open them up and have a look to see if they have internal numbers.

20180716_213720.jpg20180716_213703.jpg

Do you know if its a model A or B?

[kanetracey]

Someone interested to see if an Issue 1 actually existed..

Well I was fortunate enough to buy one with serial 100155 model (A) with zero upgrades and fully working condition. Amazing

Heres the proof!!

[leenew]

Wow! She is a rare beastie!!
I believe it should have a massive heatsink on the Video ULA, so be careful of overheating....

Lee.

[marcusjambler]

My Issue 2 Model A

Cleartone 102432

Marcus

[stuslayer]

I just picked up an Adelaide A3010, Serial 01-AGB15-1011001

I have a thread on the 32 bit hardware forum, needs some work.

[flibble]

I think the Centre for Computing History have you beat for an A4000



http://www.computinghistory.org.uk/det/ ... orn-A4000/

[stuslayer]

That's pretty cool

[Steve1234]

My German Electron is 07-GLA01-1010629

The pcb is issue 1

[Madmatt]

Hi Ade,

My recently booted up for the first time in 29 years is an ICL model 3 s/no 001862

[Andy1979]

A3010 2mb Learning Curve (since upgraded to 4mb):

01-ALC15-0000024

As you'd expect it's an adelaide board.

[a1exh]

Acorn A5000a : 2MB, 80MB hard drive, 33MHz ARM3 (Alpha version) : 25-ALB32-1012887

http://thalion.exotica.org.uk/acorn_a5000/IMG_0859.jpg

[SarahWalker]

That's a reasonably high serial number for an A5000a. There aren't that many of them.

[a1exh]

That's a reasonably high serial number for an A5000a. There aren't that many of them.

The other A5000a serials in this thread (and others) are quite close together compared with mine

27-ALB32-1010157
25-ALB55-1010639
25-ALB32-1010715
25-ALB35-1010895

I saw that you once wrote there wasn't enough serials to predict the number of A5000a's sold using the "German Tank Problem" formula.

[SarahWalker]

Yes, but based on what serials we _do_ have (8 serials spread across 3 models), yours is comfortably the highest I've seen for an A5000a. So it's far from an 'earliest example'.

[iainfm]

Think I may be in the running for earliest A5000 - 25-ALB12-1001695.

History of it was it was a demo machine for Academy Computer Systems in Inverness, where I had a bit of an after-school / Saturday job. I acquired it from them not long before they went bust.

Also, my two BBC Bs for the record:

Issue 4: 01-ANB01-3008824
Issue 7: 07-ANB01-3784392

[c0burn]

My A5000

[IanJeffray]

Hmm. What's going on here then? This is an A3000. AEH01 doesn't appear in the list on Chris's Acorns and doesn't seem to "fit" in the scheme of codes either! (AEH are all Econet/Ethernet things).

[IanJeffray]

Earliest non-Adelaide A3010 I think that I've seen here?...

[steve3000]

Earliest non-Adelaide A3010 I think that I've seen here?...

Interesting, I’ve definitely seen later ALC15 serial-numbered A3010s with Adelaides before.

Any evidence of mainboard swap? IC date codes later than 1992?