110600     VT125 Graphics Hardcopy on an EPSON MX-80 Serial Printer
for RT-11 and TSX-PLUS  Version: March 1983
 
Submitted by: David M. Goodman, Veterans Administration Hospital,
Bedford, MA
 
Operating System: RT-11 V4.0 or later, TSX-PLUS V2.0  Source Language:
FORTRAN IV, MACRO-11  Memory Required: 32KB  Software Required:
TSX-PLUS is optional and provides more options. DECUS No. 11-490 is
required if user needs the source code for TSXLIB (object code is
included).  Hardware Required: VT125 Graphics Terminal, EPSON MX-80
printer with GRAFTRAX bit-map graphics option.  Keywords: Graphics,
Plotting, ReGIS
 
Abstract: A collection of programs is presented which allow the
user of a Digital Equipment Corporation VT125 graphics
terminal to generate hardcopy of ReGIS graphics on an
inexpensive EPSON MX-80 serial matrix printer. These
programs allow easy production of hardcopy graphics
without the user having to purchase relatively expensive
devices (such as a Digital Equipment Corporation LA34
printer or a video hardcopy unit).
 
A subset of the programs can be used directly under
RT-11 V4 to store the bit-map graphics produced by the
VT125 terminal, recall a previously stored graph and
optionally produce a hardcopy. However, greater utility
can be achieved under the TSX-PLUS timesharing system
through which the user can interactively or
automatically initiate hardcopy plots of whatever
graphics are currently displayed on the VT125 by issuing
a single command. Furthermore, a FORTRAN subroutine is
provided which can cause a hardcopy of the current graph
to be initiated from within a program. This feature is
particularly useful for generating automatic
(unattended) hardcopy plotting of numerous plots within
a FORTRAN program that uses ReGIS Graphics Library (RGL)
software.
 
Two hardcopy output formats are available: small (4.5
in. x 8) or large (8 in. x 11 in.).
 
Restrictions: Under TSX-PLUS, a second serial line at 1200 baud must
be dedicated to the auxiliary port of the VT125 (with an
LSI-11/23). RT-11 can operate over a single port at 9600
baud.
 
Complete sources not included.
 
Media (Service Charge Code): User's Manual (EA), Two RX01 Diskettes
(KB)  Format: RT-11, 600' Magnetic Tape (MA)  Format: RT-11