Date   : Wed, 27 Jul 2005 14:26:50 +0100 (BST)
From   : Greg Cook <debounce@...>
Subject: Re: 64K BASIC ROM for BBC B, already done?

On 24 Jul 2005 19:18:59 +0100, Jonathan Graham Harston
<jgh@...> wrote:

> 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?

"[A] plain model B with SRAM".  See the grandparent post.

> 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

It's a shame BASIC 3 isn't available, otherwise I'd try it.  Isn't that
the US BASIC, which runs from paged ROM as normal?

> It's unlikely you'd fit it into a single ROM, as the loaded code
> is 20K long.

On second thoughts, it's probably infeasible to get a compressed BAS128
*and* the decompressor short enough to fit into 16K.  Deflate manages
14.2 KB minimum.

> Also, Basic128 is just Basic 4 relocated into main
> RAM with sideways RAM as workspace.

No surprise that BAS128 is a variant of one of the Acorn ROMs.  What I
was asking is if Acorn had released a BASIC that would copy itself into
main memory.

Greg



       
       
               
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