Date   : Fri, 10 Oct 2008 00:48:41 +0100
From   : jgh@... (Jonathan Graham Harston)
Subject: GXR ROM manual still online?

"Michael Firth" wrote:
> Alternatively, what I was trying to do was to programmatically determine
> how many pages of Sprite RAM have been configured. The code I was
 
OSBYTE 163,242 - see http://mdfs.net/Docs/Comp/BBC/Osbyte80
 
A=163, X=242 Acornsoft GXR
On entry: Y=0     resets the dot-dash pattern & length to defaults
          Y=1..64 set dot dash pattern repeat length
 
          Y=65    return status
On exit:  X=b0..5 current dot dash pattern repeat length (0 means 64)
            b6    set if flood fill is always active
            b7    set if GXR ROM is turned on
          Y = number of pages allocated to sprites
 
On entry: Y=66    return info on current sprite
On exit:  X=pixel width
          Y=pixel height
          if X=Y=0 then the ROM is not fitted, or no sprite selected
 
> Also, I noticed that the BBC Lives site archive only has the BBC B
> version of the GXR ROM online. As I have a copy (even an original ROM in
 
GXR ROMs available at http://mdfs.net/System/ROMs/Graphics, BBC B
and BBC B+ versions. I've got the manual somewhere. I'll upload it
at some point.
 
-- 
J.G.Harston - jgh@...                - mdfs.net/User/JGH
05:10:36, 18-Nov-2008 - RISC OS time rolls over to &5000000000