[net.micro.att] 3b2 serial printer port handshaking

cdl@mplvax.UUCP (Carl Lowenstein) (10/15/85)

I just spent a frustrating half day trying to make a port on the
3b2 Expanded I/O card do the right thing.  Using a breakout box
between the port and a terminal, I can watch the print spooler
send data to this paperless printer.  I can stop the flow of
data by dropping DTR (pin 20) going to the port.  But somewhere
inside that I/O card the buffer pointer keeps on going.  So when
I raise DTR and the data comes out again, there is a large chunk
of it missing.

Is there any way to use hardware handshaking on one of these ports,
or do I need to convert my printers to use XON-XOFF?

-- 
	carl lowenstein		marine physical lab	u.c. san diego
	{ihnp4|decvax|akgua|dcdwest|ucbvax}	!sdcsvax!mplvax!cdl