On Jan 13, 10:22=A0am, schmidtd  wrote:
> On Jan 13, 9:56=A0am, BLuRry 
wrote:> Very nice=
 stuff. =A0What I'm trying to do requires something a little
> > more compact. =A0Fist I need to eliminate as much init code as I can
> > (so, preferably can I assume the port is already set to 8-bits, etc?)
>
> You can be sure the port is initially set to what a user has set the
> GS' control panel to. =A0The defaults are as you would expect, so it
> might be enough to just tell folks they have to hit the control panel
> in case things don't work.
>
> > I noticed that ADTPro reads RR8 for data rather than the c03a/c03b
> > data lines? =A0Is there an advantage to that if using polling?
>
> It has the advantage of working... ;-)

Point made. :-)  I was able to read some data from the serial data
address -- but some of it was incorrect or missing (not sure which is
the case just yet)   However, the GS Technical Note #18 demonstrates a
read by just doing an LDA of the data address.  The SCC docs are..
well.. convoluted and lack clarity on the issue.

-B
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