110736     DV: Virtual Device Handler for RT-11  Version: January 1987
Submitted by: R. Tapp, University of Victoria, Victoria, B.C., Canada
V8W 2Y2
Operating System: RT-11 V4.00 or 5.01  Source Language: MACRO-11
Memory Required: 32KB  Software Required: Includes a companion server
program for a VAX/VMS version 4.4 host with both .PAS PASCAL version
3.4 and .OBJ files, but this must be customized for other host
operating systems.  Keywords: Data Communications, Device Handlers
Abstract: A patch for the RT-11 file DD.MAC creates the source file
for a new device handler DV that can access virtual devices
on a host computer using a standard serial terminal line.
These virtual devices can be used either for file
communication with the host system or as backup storage for
RT-11 files.  Included are an RT-11 terminal emulator
program for establishing communication with the host system,
a stand-alone bootstrap loader program for DV, and a set of
server programs for a VAX/VMS host that support
virtual devices compatible with the VMS EXCHANGE utility
and emulate TU58, RK05, RL01, RX01 and RX02 devices.
Notes: Supplied patches require RT-11 version 4.00 or 5.01 source
files.  Other
versions may not be compatible.
Changes and Improvements: Runs under RT-11 version 5.01 as well as
version 4.00.  Problem with RT-11
extended memory code has been fixed.
Media (Service Charge Code): User's Manual (EA), One RX01 Diskette
(KA)  Format: RT-11, 600' Magnetic Tape (MA)  Format: RT-11

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Created: December 26, 1998