July 3, 1985 README.1ST Table of Contents: New Information for all users . . . . . . . . . . 1 Information for RT-11, Version 4 Users . . . . . 2 Information for RSTS Users . . . . . . . . . . . 3 NEW INFORMATION The Spring, 1985, SIG tape is trying an experiment to improve information retrievability. We have included an index at the end of the file TAPE.DIR which references every submission, every author or submitter, and any key words or phrases which might help someone locate a submission. If you find this of use, or have suggestions for improvement, please contact R. W. Barnard with your comments. The XD subdevice files will no longer be included on the tape. Version 5 of RT, with its built-in subdevice handler, has been around long enough that including XD is unnecessary. If anyone needs that capability, previous tapes have the XD stuff, and the section on the following page explains how to recover files from within subdevices without the LD handler. This file explains how the submissions contained on the swap tape can be transferred to other host systems. Now that RT-11, Version 5 has the LD (logical disk) handler, files may be easily broken down after they have been copied from the tape. This is done by typing the KMON command MOUNT LDn FILE.DSK. Files within the subdevice FILE.DSK can then be copied. Directory listings are again no longer included in the file TAPE.DIR, to make it smaller. At the end of each subdevice de- scription, the number of files and their sizes is given. The sizes of the subdevices (which are generally 8 blocks larger to include the directory), can be determined from the RT-11 directory of the whole tape. Wherever possible, subdevices have been cre- ated with only one directory segment, to reduce the size. Page 2 RT VERSION 4 INFORMATION If you are using RT-11, Version 4, you will need to use the subdevice handler XD, or any other subdevice handler you may have. There are two ways to pull files from this tape. The tape has been built so that each submission is no larger than a single den- sity floppy. The first way to pull off a submission is as follows: COPY/DEV/FILE MT:XXXXXX.DSK DX: The above command will transfer the submission XXXXXX.DSK from the magnetic tape and place it on a single-density floppy. The floppy will have a regular RT-11 directory and will be usable as an RT-11 device. Note that if the subdevice file was smaller than 494 blocks, the floppy capacity will also appear to be less than 480 blocks. If you do not have floppies, or you want to take advantage of the virtual-device system, do the following: First of all you need to copy the virtual-device file from the magnetic tape to a working disk using PIP. COPY MT:XXXXXX.DSK DK: Then attach the subdevice handler XD to the file using the program XDATCH. R XDATCH *XXXXXX=XD0: *^C The virtual-device XD0: is now attached and can be accessed as a disk device using regular RT-11 commands like DIR. DIR XD: will list a directory of the virtual-device. Page 3 RSTS/E USERS The file VIRTUL.BAS on this tape (a submission of E. F. Beadel, SUNY at Oswego, Oswego, NY), will allow subdevice files to be read by RSTS systems. Needless to say, it is not located in a subdevice file. It can be used to break down RT-11 subdevice files after they have been copied from tape to disk. There is a description and instruction section at the beginning of the VIRTUL.BAS file. If RSTS users have any trouble or questions about the usage of this file, please direct your questions to Mr. Beadel. David Smith, of Galileo Computer Center, San Francisco, CA, has used and modified the VIRTUL program. He has included a few bug fixes and made it possible to now read multi-segment directo- ries. If users have any questions or problems regarding the new VIRTUL, please contact Mr. Smith.