Date   : Wed, 30 Jun 2010 19:31:03 +0100
From   : samwise@... (samwise)
Subject: BBC Master Compact key ghosting

Thanks for reply, Pete.  I passed it on to Paul, who responded ...

On 29 June 2010 23:57, Pete Turnbull <pete@...> wrote:

> In a PC keyboard, the microcontroller in the keyboard does that under
> control of its firmware, whereas in a Beeb it's done by the 6502 under
> control of the MOS.

"Which brings me back to my original question - how does the 6502/MOS
combo behave? Actually this is more likely a question for the emulator
authors as it is really up to how they implemented the keyboard part.
>From my tests with Beebem it looks like they did it at the raw
hardware level so again it should work just like a real BBC.

That is good news."

I'll drop Tom W a mail, who's a terribly proficient chap in this regard.

Bottom line, it sounds like he's got faithful behaviour from the
keyboard now ... well, except that there's a limit of 5 keys
(excluding Ctrl/Shift modifiers) that can be passed over USB the way
it works atm.   The beeb probably doesn't have that issue.

Cheers,

Peter.

P.S.  More on this topic (including pics) at the STH forum, where the
thread woke up again after I'd already posted to the mailing list:

http://www.stairwaytohell.com/sthforums/viewtopic.php?p=26093#p26093