Date   : Fri, 02 Aug 2002 14:16:34 +0100
From   : Sprow <news@...>
Subject: Re: Executable programs on EPROM

In article <3D4A59FC.3060006@...>,
   Dave Gilbert (Home) <gilbertd@...> wrote:
> > 
> > What can you 'write' to EPROM (I'm aware a suitable burner is required)?
> > Are there any circumstances whereby a BASIC program can be written to 
> > EPROM and then run, the Equivalent of CHAINing them?

> Yes it can.  The trick is to build an EPROM that is a ROM filesystem 
> with a !Boot file that gets run (or is it chained....). There was a 
> program in Acorn User many many moons ago to create an image from a set 
> of files.

...or 
 http://www.sprow.co.uk/bbc/bbconly.htm
look at the "RFSHEAD" program.

[snip] 

> Can a BBC or Master run without a keyboard being
> attached?  I suspect not,

And you'd be right.Simply unplugging it will cause the machine to sit waiting
for an interrupt on power up.
You could try copying the circuit (it's in the advanced user guide) and just
not bother with any of the keys - its only 3 chips and a few diodes if I 
remember rightly,
Sprow.