[comp.sys.atari.8bit] modem and printer I/O w/o an 850

cwilliam@umd5.umd.edu (Christopher Williamson) (04/09/89)

In article <746@sunkisd.CS.Concordia.CA> you write:
>The first program will have to do serial-parallel conversion quickly enough
>to operate at 1200 bps.  Timing will be critical too, so I plan on using
>interrupts triggered by POKEY's hardware timers.  If you have any comments
>of the type 'it is impossible' then let me know.  I figure it's possible
>because I think Supra/MPP has a 1200 bps modem that connects to the
>joystick ports, and one of the Volksmodems does that too.

I dont think this is possible, as 1200 baud modems thru joystick ports
rarely work.  I had a joystick port modem and the max I could get out of
it was about 750bps.  If you wanted to built such a thing, it would have
to use the standard I/O connecter as the 850 does to keep up with a 1200
baud and definetly with a 2400 baud modem.  I would be interested in knowing
what you find out however, as I would like to get some recent software for
my 8bit, as I dragged it outta the closet a few months ago and realized the
newest stuff I had was over 5 years old.
 
                                  Chris Williamson
cwilliam@umd5.umd.edu