Date   : Sat, 16 Jul 2005 01:11:47 +0100
From   : jgh@... (Jonathan Graham Harston)
Subject: Re: BASIC IV: Coded Line Number

Steve Fewell <kranser@...> wrote:
> This is rather worrying, as I think 139 is a valid MODE 7 function key
colour
> command (not sure what key it is, is it CTRL+F0?). Can't remember what it
does
> though, but it is directly enterable from the keyboard.
 
CHR$139 in Teletext is StartBox, which has no effect on the BBC.
 
139-128=11, so that's Shift-F11, which is *not* normally enterable
from the BBC keyboard.
 
Of course, if you normalise the cursor keys with *fx4,2 then the
COPY key becomes F11, and so Shift-COPY gives CHR$139.
 
Or, you could change a function key base, eg *fx227,139 would make
Ctrl-F0 give CHR$139.
 
-- 
J.G.Harston - jgh@...                - mdfs.net/User/JGH
BBC IDE Hard Drive Interface - http://mdfs.net/Info/Comp/BBC/IDE