Magtape FOCAL
FOCAL8-8

J. C. Alderman, Applied Data Research, Atlanta, Georgia

A sophisticated handler package for the TC58 IBM compatible
magtape controller in the FOCAL language. Data is transmitted
to/from the FNEW arrayed storage in FIELD 1. The
features of I/O overlap with program execution, defeatable
error diagnostics, and programmable tape density and unit
selection have been incorporated into the coding. Syntax is
via the LIBRARY command, and there is extensive error
checking of user calls.

The FIELD 1 resident portion of the magtape handler is removable
by other users, and the result is a general purpose
LIBRARY command handler package, capable of being linked
to any device using the interrupt. A functional argument is
transmitted to the FIELD 1 coding, and any number of numeri-
cal arguments may be evaluated.

Catalog: July 1973