Date   : Fri, 04 Nov 2005 13:32:25 -0000
From   : "Chris Priest" <chris.priest@...>
Subject: Re: Parts blag

What's the socket location, I'll compare with one of my other B's :)


-----Original Message-----
From: Majordomo List Manager [mailto:majordomo@...] On Behalf Of
Richard Gellman
Sent: 04 November 2005 11:58
To: bbc-micro@...
Subject: Re: [BBC-Micro] Parts blag

Chris Priest wrote:

>I have a box full of chips that have been salvaged from dead Beeb's, I am
>not sure what the part number is, but let me know and I'll have a rummage
>and see if I have one.
>  
>
Oooo uh um.. Can I have a sport question please?

I have no idea off hand what the part number would be (and not being at 
home right now cannot easily check). Also, I believe there are different 
varieties of VIDPROC from different chip manufacturers.

If it helps, you're looking for a ROM-sized chip (28 pins-ish), that 
looks like no identifiable BBC micro component (e.g. a 6845 or SAA5050 
would be obvious chips, whereas this one is not obvious at all). Some 
beebs had Ferranti VIDPROCs, some had later Acorn versions. Possibly 
another chip maker made them for Acorn too? (Could be talking readily 
from betwixt my buttocks on that one).

 From memory, the Ferranti VIDPROCs were made with the lesser-found 
"smooth" (almost reflective) plastic black casing, as opposed to the 
traditional dark grey ceramic casing (as used by (some?) later Acorn 
VIDPROCs).

Any of this help?

-- Richard

>
>-----Original Message-----
>From: Majordomo List Manager [mailto:majordomo@...] On Behalf Of
>Richard Gellman
>Sent: 04 November 2005 11:13
>To: bbc-micro@...
>Subject: [BBC-Micro] Parts blag
>
>Hi,
>
>I'm after a VIDPROC chip, but would rather not canibalize a perfectly 
>working model B to get one - anyone got a dead BBC board with a working 
>VIDPROC on it? Or otherwise know where I might acquire one sur la web?
>
>VIDPROC of course one of two chips Acorn used that is *not* 
>off-the-shelf, and thus not easily obtainable from Maplin :(
>
>-- Richard
>
>
>
>
>  
>