Date   : Thu, 07 Aug 2008 15:08:14 +0100
From   : acorn@... (Andy Ford)
Subject: Switchable OSs in B+

I seem to remember a company called Vine Micro's , although I cannot 
remember much about them. Hopefully someone will be able to shed some 
more light on this for you.




Ken Lowe wrote:
> I've just got hold of a B+ that has a small daughter board which is 
> plugged into the OS ROM socket. The daughterboard has both the B+ OS 
> 2.00 and plain B OS 1.20 installed. There's an other 74 series IC on 
> board, which I assume maps in the BASIC ROM (which is embedded in the 
> B+ OS ROM) when the plain B OS is selected. A selector switch is wired 
> to the rear of the case to switch between OSs.
>  
> Was this an official Acorn board? The only markings on the board is a 
> label that says 'VINE1'. Was this a third party manufacturer? My other 
> B+ doesn't have this board.
>  
> Thanks
> Ken
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