Date   : Tue, 23 Aug 1994 08:59:51 WET DST
From   : Bonfield James <jkb@...>
Subject: Re: Mine did something! Eeek!

Stephen Quan writes:

>Then maybe you are ready to get 3000-6000 lines of debug info???
>Quite a large file thou, and could cost you a bit to download...

If this is the debug info from mine then maybe it's not worth it. If things
are working (the double LF may just be the fact that the beeb sends both LF
and CR, but your screen interprets both as LF) ok then I'd save money and not
download huge amounts of debug.

Anyways, who's to say which emulator is correct? I guess if there are any
differences then you can at least say something's wrong somewhere!

I've finally remembered to bring my Adv U.G. in today. I'll have another bash
at finishing my 6522 code ;-) Has anyone got the datasheets for it? Does
anyone know the difference between ORA and ORA non-handshake? The AUG has a
bit about it in section 22.4.2, but is pretty wooly. It seems to be implying
that non handshake mode has does not use the CB2 interrupt flag. Is this only
on outputs? Is it possible to input by writing to a non-handshake pin on the
6522 that doesn't generate a CB2 interrupt? It'd help enormously if the AUG
had bothered to give the pin out for the chip.

       James