[net.micro.apple] Apple at 1200 BPS

wolenty@inuxd.UUCP (R Wolenty) (07/25/84)

I have a problem using the Apple as a dumb terminal at 1200 bits per
second.  I am using a short assembly language program on an Apple
IIe that monitors the serial port and Apple keyboard port and
writes to the screen using the firmware routine at $FDED.  The
problem is during CR/LF sequences several characters are lost.
I want to know if there is a different subroutine I should be using
or do I have to write my own display driver. Suggestions or comments
are welcome.

				Ron Wolenty (AT&T Consumer Products)
				Indianapolis, IN

gwyn@BRL-VLD.ARPA (07/26/84)

From:      Doug Gwyn (VLD/VMB) <gwyn@BRL-VLD.ARPA>

The code that scrolls the display is taking too long
to keep up with 1200 baud.  This is a standard problem,
especially with 80-column cards.  The solution is to
write your own display code (use modem interrupts or
poll the modem port frequently).