Date   : Fri, 25 Apr 2008 00:01:30 +0100
From   : C.J.Thornley@... (Chris Thornley)
Subject: Disk fault 0C at 00/00

Hi,
The expansion module is the header for a first generation solidisk sideway
ram module.

This accepts a ram board available in sizes from 16kb up do a double stacked
256kb board.

Later soldisk used larger ram chips and built a daughter board that plugged
into the 6502 CPU slot directly.

Solidisk was absorbed into IBM in its later years.

Chris


               />      Christopher J. Thornley is cjt@...
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-----Original Message-----
From: bbc-micro-bounces+c.j.thornley=coolrose.fsnet.co.uk@...
[mailto:bbc-micro-bounces+c.j.thornley=coolrose.fsnet.co.uk@...
uk] On Behalf Of Anders Carlsson
Sent: 24 April 2008 23:41
To: bbc-micro@...
Subject: Re: [BBC-Micro] Disk fault 0C at 00/00

Hello again,

as an update to my own post, I opened up the computer and it looks like
this: (big, blurry image)

http://www.geting.se/viewimage.php?image=98826-bbc-inside.jpg

That is, some kind of expansion card in one of the ROM slots, and a total of
11 wires: 2 to the CPU, 3 to a 6522, another two each to S20 and S21, and
the last two to IC76. The board is an Issue 7.

I know as much this computer came with a Music 500 expansion that I didn't
buy because the seller wanted a lot of $$$ for it and I can't see myself use
it. Would all these wires inside relate to the Music 500, and should it in
any way interfere with floppy drives?

I suppose it is the unlabeled 2762 in IC52 that contains the DFS, in case I
should replace it.

Best regards

--
Anders Carlsson

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