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Tape Copy and Test Program

IP.com Disclosure Number: IPCOM000081587D
Original Publication Date: 1974-Jul-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Warner, JD: AUTHOR

Abstract

The subject program performs two functions. It will copy any single volume tape including labels, giving the operator the option to copy or not to copy the volume label and to accept or skip error records. Additionally, it tests any nine track 800 or 1600 BPI tape on any IBM tape drive.

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Tape Copy and Test Program

The subject program performs two functions. It will copy any single volume tape including labels, giving the operator the option to copy or not to copy the volume label and to accept or skip error records. Additionally, it tests any nine track 800 or 1600 BPI tape on any IBM tape drive.

The test function creates a single page chart print-out containing:

a) Tape label, unit address, density, date and time.

b) Track-in error count by track (totals).

c) Sum of total errors.

d) Physical layout of tracks. and

e) Map of tape.

The map consists of a dash (-) for a good write or a digit representing the failing track for a bad write. An "M" represents a multiple track failure. Each record written is exactly one foot of tape. The failures may be readily pinpointed accurately on the test tape. The data written is hex FF so maximum flux change occurs on every track. Only one write pass is made and no recovery takes place. Since the hard-ware read-back check is more critical than the normal read, no read-back is required.

Control is via the operator's console. If a standard label tape is being tested the program will read the label and forward space over it, so that the tape need not be initialized after the test. If the tape is unlabelled, the operator must enter a tape ID and the test is done from load point. If the read for the label is not desired "TEST,NL" must be used. This allows the testing of uninitialized tapes.

The job control language li...