Date   : Thu, 09 Sep 1999 07:43:06 -0700 (PDT)
From   : FARAZ CHOUDHRY <razzledazzler2@...>
Subject: Re: 6502 2nd Pro

Would I need all this with a 65C02 2nd Processor as well?

                                     F. H. Choudhry

--- Stuart William McConnachie <stuart@...> wrote:
> In message <37D42C55.9216D89@...>, Wayne
> Allen
> <wayne@...> writes
> >I have a venerable old BBC B, and someone has given
> me a 6502 2nd
> >processor. I think I need 2 roms, but which
> ones???? If someone could
> >point the images out, if they exist I have the
> equipment to zap them
> >into a couple of eproms.
> You need a ROM with the extensions to the BBC OS to
> handle the IO to and
> from the tube processor.  This is called the TUBE
> HOST ROM, but the code
> was included in many of the later Acorn DFS ROMS as
> it is only a small
> and thus saves a ROM socket.  It's certainly in the
> Watford 8271 DFS ROM
> version 1.44 (under licence from Acorn) and also the
> Acorn 1770 DFS ROM
> version 2.23.  To check yours, search the DFS ROM
> contents for a text
> string similar to TUBE HOST 2.20 which is printed as
> a response to *HELP
> (but only when the tube is connected).  There is
> also a standalone ROM,
> but I've no idea where you might find it (Basically
> I'd advise upgrading
> your DFS ROM to a later version).
> 
> Optionally you might also want to install HIBASIC. 
> HIBASIC is a version
> of BASIC II which was assembled to run at &B800
> instead of &8000.  This
> is copied across to the 2ndP during initialization
> and hence gives you
> 14K extra program and variable space (compared with
> the normal version
> of BASIC running across the tube)  However this has
> one fairly major
> problem in that you can't then boot the machine as a
> standalone beeb
> without a second processor.  I prefer to keep a copy
> of HIBASIC on disk
> and load it as necessary.  HIBASIC can be obtained
> from the following
> site:
> http://www.geocities.com/SiliconValley/Lakes/7207/index.html
> 
> Those are the only two ROMS you need (other than the
> one that should
> still be in the 2ndP box itself!).
>         
> Regards,
> -- 
> Stuart McConnachie (stuart@...)
> 43 The Hollows, Long Eaton, Nottingham, NG10 2ES, UK
> Mobile: 0966 224307
> 

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