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: FORTRAN IV, FORTRAN IV-PLUS, MACRO-11 Memory Required: 20KW 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