Date   : Wed, 08 Oct 2008 07:50:25 +0100
From   : info@... (Sprow)
Subject: GXR ROM manual still online?

In article <F94D507B2A1B4E8BB6AB75868A8FBD36@...>,
   Michael Firth <mfirth@...> wrote:
> I've been playing with the BBC GXR ROM, and was trying to find an 
> electronic copy of the manual.
>
> What I was trying to do was to programmatically determine how many pages 
> of Sprite RAM have been configured. 
> Does anyone know if there is a way to get this value?

OSByte &A3.
Documented at
 http://www.sprow.co.uk/bbc/library/osbytes_80a5.txt
Sprow.