[net.graphics] PS300 Binary Encoding

rlh (04/20/83)

     I am using an E&S PS300 connected to a VAX running UN*X
and  would  like  to send binary encoded vector lists to the
PS300 in order to decrease the	time  required	to  download
data  to  the  PS300.  I decided not to use the E&S supplied
I/O package because it is written in  FORTRAN  and  designed
for  VMS  and  am attempting to write my own binary encoding
routine.  However, I am having trouble writing a  C  routine
to accomplish this.

     I can encode a  vector  list  into  the  E&S  specified
binary	format	but can't get the PS300 to accept or display
the data either in the 8-bit or the 6-bit mode. I  am  using
P4.V01	software  for both a 9600 baud interface and the DEC
DMR-11 56 kbaud interface.  If anyone has a binary  encoding
package  or  can  offer  insight in to this problem, I would
appreciate hearing from you.  I am also interested in  hear-
ing  from  others  how	they have interfaced their PS300s to
machines running UN*X.

     If there is enough interest, responses will  be  posted
on the net.


       thanks - Rab Hagy
       !{vax135, decvax}!brunix!rlh
       rlh.brown@udel-relay