110674     FILTRA: A File Transfer Program  Version: December 1985
Submitted by: Frank Bosso, Presco Inc., Woodbridge, CT
Operating System: RSX-11M V4.1, RSX-11M-PLUS V2.1  Source Language:
Keywords: Data Communications
Abstract: FILTRA is a file transfer program written for a host
computer (PDP-11).  It enables the host computer to
transfer files to and from a micro computer.  As FILTRA
includes error checking, the micro computer must have a
compatible program such as MODEM.  Compatible programs
for micro computers such as the VT180 and the
Rainbow-100 are available commercially, and others are
in the public domain.
While FILTRA is designed as a host program, it could
also be used as a local file transfer program.  In this
manner files could be transferred to another PDP-11 or
to a VAX.  To use FILTRA as a local program, either minor
programming changes would have to be made, or hardware
(switches) would have to be added to a system.
FILTRA is written in FORTRAN IV-PLUS for a PDP-11 with a
RSX-11M operating system.  The program makes use of several
system subroutines, and it is therefore limited to
IAS/RSX-11M type operating systems.  Files are stored on the
host computer as formatted data files.
No restrictions are made on the type of data to be
transferred. It may be either 7 bit ASCII or 8 bit data.
The actual transfer uses 8 bit values.  Binary (8 bit)
files are stored as 128 byte records.  ASCII files are
reformatted so that each line corresponds to a record.
Media (Service Charge Code): One RX02 Diskette (LA)  Format: FILES-11,
600' Magnetic Tape (MA)  Format: FILES-11

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Created: December 26, 1998