Date   : Tue, 07 Mar 2006 22:32:46 +0000
From   : Jon Ripley <jon@...>
Subject: Re: How do I use Advanced BASIC from Sideways RAM?

Steve Fewell wrote:
> Does anyone know how to use/activate Advanced BASIC? The disk I have
> loads the Advanced BASIC ROM to Sideways RAM socket 5 and the HIBASIC
> ROM to the Sideways RAM socket 4 on boot.
> 
> I am using a BBC Master without TUBE, MOS 3.20, and the Advanced
> BASIC ROM doesn't seem to reconise the service call *ABASIC

Paraphrased from the manual:

Advanced BASIC requires; BBC B OS 1.20, BBC B+ OS 2.00 or a Master, and
a 6502 2nd processor or a 65C102 co-processor. Acorn's HIBASIC ROM
*must* also be present. Both ABASIC and HIBASIC will run from sideways
RAM. Advanced BASIC is token compatible with BASIC V and provides 16+256
SYS calls compatible with RISC OS.

Type *ABASIC to start.

> (does the MOS send service calls to Sideways RAM sockets?).

Of course it does, otherwise no ROM images loaded into sideways RAM
would work!

> Does anyone have the manual for this or know what I'm doing wrong?

You need a 6502 2nd processor or a 65C102 co-processor.

Any chance you could send me a copy of the disc image to save me from
spending a few hours in a *very* cold loft looking for my copy?

HTH,
Jon Ripley
-- 
http://jonripley.com/