Date   : Sun, 24 Jul 2005 19:18:59 +0100
From   : jgh@... (Jonathan Graham Harston)
Subject: Re: 64K BASIC ROM for BBC B, already done?

Greg Cook <debounce@...> wrote:
> I think BAS128 was intended for the Master.  The files appear hacked to
> 
> The BASIC 3 and HiBASIC ROM images from Wouter's archive wouldn't work
 
What did you try to use them on? BASIC 4 onwards uses 65C12
opcodes and won't run on pre-Master computers. BASIC 1, 2, 3 use
6502 opcodes and will run on all computers. You could also have a
look at http://mdfs.net/Software/BBCBasic/BBC
 
> (they hung on selection.)  If I were to try and compress BAS128 into a
> paged ROM (as a *ROM file), does anyone think (or know) if I'd just be
> duplicating the function of a released language ROM?
 
It's unlikely you'd fit it into a single ROM, as the loaded code
is 20K long. Also, Basic128 is just Basic 4 relocated into main
RAM with sideways RAM as workspace.
 
-- 
J.G.Harston - jgh@...                - mdfs.net/User/JGH
Spectrum Emulators - http://mdfs.net/Apps/Emulators/Spectrum