I see a few
mentions online about the 128 supporting 9600 natively, but
no real details. Do you have any to share?
IIRC -- and I haven't had to write Commodore user port serial code in a
looooong time -- it's much like a 64 doing 2400bps on the user port, it's
just bitbanging it at a higher rate instead of using the Kernal, and at
2MHz. 4800bps is definitely achievable and considered stable. I suppose you
could overdrive it to 9600 and I've heard of it being done, but I've never
written such code myself.
When I used Kermit on my 128 as my means of Internet access, I had a
SwiftLink.
I wonder if it'd be worth turning off the
device's UP9600 support and
seeing if the 128 will still talk 9600 to it. (If I do keep it on,
apparently the 128 will be able to do 19200 -- but I'm not holding my
breath, based on my experience with 9600.)
I would be very impressed to get 19.2k out of that!
service is capable of 38400 -- on an
unmodified 64. I haven't gotten it to work yet (though the WiModem is
supposed to be capable).
--
Eric Christopherson