Date : Wed, 27 Jul 2005 01:35:02 +0100
From : jgh@... (Jonathan Graham Harston)
Subject: Re: ARM copros, speech cartridges, real timeclocks, etc
Johan Heuseveldt <johan@...> wrote:
> It's polling constantly. It devotes all its processing time on this
> polling, only being interrupted by its own interrupt system. If of
> interest I dig out the hand made disassembly, and show you. It's just
http://mdfs.net/Software/Tube/BBC/Host100.lst
> a few lines. From that, it can also be seen that VDU has a certain
> priority over the rest of the Tube protocols.
--
J.G.Harston - jgh@... - mdfs.net/User/JGH
BBC BASIC for the Sinclair Spectrum - http://mdfs.net/Software/Spectrum