Magnetic Tape Facilities
KEY MAGTAPE,MAGNETIC,TAPE,MAGNETICTAPE The following commands are available to users to enable them to process files on 'private' magnetic tapes. DEFINEMT Enable access to tape file from user program HOLDMT Hold tape at last known position on tape drive RELEASEMT Release tape - converse of HOLDMT TAPEANAL Provide an analysis of the contents of a tape. FROMTAPE Read files from a tape into user's files. TOTAPE Write user's files to tape. COPYTAPE Copy files from tape(s) to tape. For full details see the manual "EMAS 2900: Magnetic Tape" For further information on tapes in general and the above commands in particular see the following sections:
Standards for tapes
KEY Hardware standard. The ERCC EMAS services can process tapes written at 1600 bits per inch in Phase Encoded mode, known as "1600bpi PE" for short. Other densities cannot be processed conveniently. Labelling standard. In general the tapes to which users have access should follow the IBM standards for the processing of tapes labels. Unlabelled tapes can be processed but the practice is not encouraged because of the operational difficulties involved and the increased risk of accidental corruption of users' tapes. File structure standards. The files on tapes must follow the IBM standards for block and record structure if the user is not to experience considerable difficulties in processing the files on a tape.
DEFINEMT
KEY SKIP
>SUBSYS:pamhelpfile,DEFINEMT
HOLDMT
KEY SKIP
>SUBSYS:pamhelpfile,HOLDMT
RELEASEMT
KEY SKIP
>SUBSYS:pamhelpfile,RELEASEMT
TAPEANAL
KEY SKIP
>SUBSYS:pamhelpfile,TAPEANAL
FROMTAPE
KEY SKIP
>SUBSYS:pamhelpfile,FROMTAPE
TOTAPE
KEY SKIP
>SUBSYS:pamhelpfile,TOTAPE
COPYTAPE
KEY SKIP
>SUBSYS:pamhelpfile,COPYTAPE