rcw@qetzal.UUCP (sysop) (05/30/87)
We are trying to plot to a Calcomp 1075 plotter using an
IBM-RT running AIX Version 1.1. The plotter queues characters
until its buffer is full, then drops CTS. When it's ready
again, it raises CTS. Apparently, this has the negative effect
of trashing the next block of data from the RT because
of a timing problem. The plotter complains about a Logic Error,
which forces a hard reset.
1) Has anyone experienced this problem before?
2) Is there a better solution than forcing the driver to
wait ten seconds after each block is plotted?
3) We are using the single serial port which came with the
unit. We also have received a 4 port board, but have not
tried it yet (nonstandard cables :-( ). Does anyone know
if this board has the same problem, if in fact it is the
board?
Thanks in advance,
--
Robert C. White, Jr. Graphics Information, Inc. ****************
UUCP: seismo!{nbires!isis|hao}!scicom!qetzal!rcw * OIL/GAS/LAND *
USPS: 3067 Robin Way, Denver, CO 80222 * CARTOGRAPHY *
ATT : +1 303 759-3666 ****************