Early BBC Micro's (ICL)

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Aaron76
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Early BBC Micro's (ICL)

Post by Aaron76 » Sun Jun 03, 2018 11:58 am

Hi there,

I was having a bit of look through what's left of my BBC collection recently, and rediscovered what I believe is an early ICL built BBC Model B. It has the serial number of 000131, so I'm assuming its one on the early batch of B's when it went into manufacture. It's got an Issue 2 motherboard, but needs a bit of work to get it functioning right. If I remember rightly the RGB monitor port wasn't working when I plugged it in before. Seems to have the upgraded PSU, not the black (linear?) type - so possibly got swapped out down the road.

Be interested to hear what others have out there, are there any other early survivors?

Cheers,

Aaron
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flaxcottage
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Re: Early BBC Micro's (ICL)

Post by flaxcottage » Sun Jun 03, 2018 12:25 pm

Nice machine. An issue 2 is the one I am missing from my collection.
- John
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CMcDougall
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Re: Early BBC Micro's (ICL)

Post by CMcDougall » Sun Jun 03, 2018 7:44 pm

beats my Beeb B Issue 3 (sandpaper top/bottom case)
ICL 028236 , so only 28,105 diff :shock:
here is how I got mine before I cleaned it up
dated 7th April 1983
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marcusjambler
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Re: Early BBC Micro's (ICL)

Post by marcusjambler » Wed Jun 06, 2018 3:04 pm

=D> I think I have one of these....
I'll have a dig around and post a picture....

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marcusjambler
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Re: Early BBC Micro's (ICL)

Post by marcusjambler » Wed Jun 06, 2018 4:36 pm

Here it is ICL 014408 .... It was a right muck tub when I got it...
Scrubbed up beautifully with the WE board still working.
I replaced the sockets for turned pin ones and soldered them in whilst attached to the WE board so they line up perfectly :lol:

Marcus
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tricky
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Re: Early BBC Micro's (ICL)

Post by tricky » Wed Jun 06, 2018 5:20 pm

Aaron76 wrote:
Sun Jun 03, 2018 11:58 am
Be interested to hear what others have out there, are there any other early survivors?
I have an issue 2 000758 viewtopic.php?f=3&t=10296&hilit=serial

steve3000
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Re: Early BBC Micro's (ICL)

Post by steve3000 » Thu Jun 07, 2018 6:19 pm

Here's my issue 2 model A, Cleartone manufactured, serial 100403 and all chips socketted which is very nice :)

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It's in great condition, so I don't want to modify (other than easily reversible) but it is rather limited without any ports...! I'm currently working up a reliable and reversible fitment of a MMC interface, without soldering...

Cosmo
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Re: Early BBC Micro's (ICL)

Post by Cosmo » Fri Jun 08, 2018 8:58 am

I used to work for ICL over here back in the 90's, now i just have to get one made by ICL then. Those seems to be quire rare..
Acorn BBC Master w/Datacentre & PiTubeDirect, BBC Micro Model B Issue 7 w/Gotek
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johnkenyon
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Re: Early BBC Micro's (ICL)

Post by johnkenyon » Fri Jun 08, 2018 9:17 am

steve3000 wrote:
Thu Jun 07, 2018 6:19 pm
Here's my issue 2 model A, Cleartone manufactured, serial 100403 and all chips socketted which is very nice :)

Image

It's in great condition, so I don't want to modify (other than easily reversible) but it is rather limited without any ports...! I'm currently working up a reliable and reversible fitment of a MMC interface, without soldering...
One mystery - the ADC is fitted, but the analogue port connector isn't...

steve3000
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Re: Early BBC Micro's (ICL)

Post by steve3000 » Sat Jun 09, 2018 6:20 pm

johnkenyon wrote:
Fri Jun 08, 2018 9:17 am
steve3000 wrote:
Thu Jun 07, 2018 6:19 pm
Here's my issue 2 model A, Cleartone manufactured, serial 100403 and all chips socketted which is very nice :)

Image

It's in great condition, so I don't want to modify (other than easily reversible) but it is rather limited without any ports...! I'm currently working up a reliable and reversible fitment of a MMC interface, without soldering...
One mystery - the ADC is fitted, but the analogue port connector isn't...
Not really a mystery. I added that :) along with the other 6522 that wouldn't normally be present on an A. The socketted RAM upgrade to 32kb was already fitted when I purchased.

I've no desire to solder in the analogue, user or printer ports, but am wiring up a MMC interface using lots of croc clips!

Also a RGB socket would be nice, but at the moment I'm ok with composite video out, although long term I may fit a diy plug-in RGB out alternative...

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