Date   : Sat, 21 Sep 2002 09:43:16 +0100
From   : Tim Fardell <tim.fardell@...>
Subject: BBC B with edge-connectors instead of IDC connectors?

Hi All! 

I sent this message last week and it never seemed to turn up on the
list, so apologies if this appears twice. 

Anyway, I have just found (at the local rubbish tip) a BBC model B: 
http://www.crumble.demon.co.uk/bbc/top.jpg
http://www.crumble.demon.co.uk/bbc/main_board.jpg

A quick test revealed a non-functional RETURN key, but 5 minutes with
the old soldering iron sorted that out, and it's now apparently fully
working. 

I have a couple of questions about it, and I wondered if anyone could
shed any light? 

a) The User Port, 1MHz Bus and Tube connectors appear to be card-edge
connectors instead of the usual IDC connectors - is this common? 
http://www.crumble.demon.co.uk/bbc/edge_connectors.jpg
http://www.crumble.demon.co.uk/bbc/userport.jpg
There also appears to be no Analogue port on the back
http://www.crumble.demon.co.uk/bbc/bbc_back.jpg

b) There is a ROM labelled "DNFS" (can be seen in the pic above). What's
this? 

Any info would be appreciated. 

Oh, one other thing - can I safely swap the ADFS ROM out of my Master
into the B? I assume I will need this if I want to use the disk drive on
the B? 

Cheers all! 

Tim.