Guardian Application Conversion Guide

3 Converting TAL Applications
096047 Tandem Computers Incorporated 3–1
A TAL program can run at a low PIN under the D-series operating system without any
changes. However, for a TAL program to use the extended features of the D-series
operating system, specific parts of it must be converted. The topics in this section are:
Converting basic elements of a TAL program, such as using the EXTDECS and
ZSYSTAL files, declaring variables, and running the TAL compiler
Converting a TAL program to run at a high PIN
Converting a TAL program to create and manage a high-PIN process
Converting a TAL requester to communicate with a high-PIN server
Converting a TAL program to allow a high-PIN creator
Converting a TAL server to communicate with a high-PIN requester
The topics in this section can also apply to a COBOL85, C, or Pascal application that
calls Guardian procedures. For information about calling Guardian procedures from
COBOL85, C, or Pascal, refer to the specific language manual. You cannot call
Guardian procedures directly from TACL, but you can access them indirectly through
built-in functions; for details on TACL built-in functions, see the TACL Reference
Manual for details on TACL built-in functions.
Section 8, “Converting Other Parts of an Application,” also contains information about
converting other parts of a TAL application. For additional information about TAL,
refer to the Transaction Application Language (TAL) Reference Manual and the Transaction
Application Language (TAL) Programmer’s Guide.