110844     H19PAK - RT-11 FORTRAN IV Support for VT52/H19 CRTs
Version: V002B, April 1986
Submitted by: Anthony P. Cruz, Roseville, MI
Operating System: RT-11 V2C (HT-11 11/79)  Source Language: MACRO-11
Memory Required: 1020 or less words  Software Required: RT-11 FORTRAN
IV or equivalent.  Can also be VERY USEFUL in MACRO-11 or ANY high
level language that uses the same conventions for parameter passing as
RT-11 FORTRAN IV.  Hardware Required: VT52, Heath/Zenith H19 or any
VT52 compatible CRT terminal.  Keywords: FORTRAN
Abstract: This project was inspired by a need to utilize the Digital
Equipment Corporation VT52 compatible features of the
HEATHKIT Model H19 CRT terminal through the FORTRAN
language in as straightforward a manner as possible.  In
order to access the features of this terminal, the
non-printing  (ESCAPE) character must be used.
Normally, a FORTRAN IV programmer would have to write some
rather obtuse code in order to send any non-printing
character to a device.
Although FORTRAN is an excellent language for technical
people with little computer background, it has historically
been an inconvenient language for handling alpha-numeric
strings.  The objective here is to simplify the use of the
terminal features by accessing these features through a
series of FORTRAN "CALL" statements.
All of the needed subroutines are named according to the
name of the feature accessed per the HEATH instruction
manual.  Support subroutines are also included to enable
EFFECTIVE use of the screen dump command.
Notes: Uses RT-11 V02C programmed requests throughout.  However,
general logic
would remain unchanged if for instance RSX-11M QIOs were used instead.
Media (Service Charge Code): User's Manual (EB), One RX01 Diskette
(KA)  Format: RT-11, 600' Magnetic Tape (MA)  Format: RT-11

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