From: Rob Compton (nhyp.oadpp@nanoteq.co.za)
Date: Tue Jan 18 2000 - 20:16:09 EET
----- Original Message -----
From: Wijnand Mijnders PA3HFJ <his.ibtcubzuyg@msu.edu>
To: <ymwfthw.mzlbbdmeef@gribnut.com>
Sent: 15 January 2000 09:29
Subject: Re: SCC Problem - continued
> On Tue, 04 Jan 2000, Rob Compton wrote:
> > I am starting to wonder whether this is linked to my problem - the one
where
> > the scc ports go into TX (until the timeout kicks in) and don't transmit
any
> > data, nor RX any data.
>
> I'm having the same symptoms while trying to get a PET-SCC-card to work.
>
> Rob, did you get any usable tips yet?
>
I found that there was a solder splash linking IRQ7 to IRQ5 on my USCC
board. I removed that, set the board to IRQ7 and it works. The PC100 still
doesn't work! I have further work to do.
The PET-SCC needs lots of delays compiling in. Look in the scc.c file (in
the with the sources) and change #undefine scc_delay to #define scc_delay
(or something like that!!) It's quite straight forward. I think these SCC's
don't like Pentium's!! they work fine in slow 486's and old 386's, but get
very grumblesome in fast PC's.
Check the docs for z8530drv
> 73, Wijnand.
> --
>
> <- Internet email: ykvkkpmg.ipon@ex.ac.uk ->
> <- Ampr.org email: bjyl@qxlva.com ->
>
Rob
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