Re: Writing basic drivers (ISA Output only switch-card)

[Chris.Smith@raytheon.co.uk]

Hi,

Thanks to everyone for their input.  I've got plenty of info
to start writing :)  I'll make a definite start tonight and
probably learn a bit more about the kernel debugger in the
process :p

> BTW, if you have a spare card to send me (or info on where
> to obtain one), I can help test it.

I can send anyone the schematics and a PCB in tiff format!
These (kits) were discontinued last year by Maplin, meaning
that you'll have to build your own :(   They are relatively
simple; just some address decoding logic and a latch which
latches on a write to that IO address.  That is connected to
a few relays via a high power buffer.  No IRQs, no PnP, no
fancy stuff - just bit banging :)  This is what I mean when
I say that I'm starting simple!!

Cheers,

- Chris.