TAL Reference Manual

TAL Syntax Summary (Bracket-and-Brace Diagrams)

Appendix C—526371.001

C-21

CODE Statement

The CODE statement specifies machine-level instructions and pseudocodes to compile

into the object file.

instruction has one of the following forms:

DO Statement

The DO statement is a posttest loop that repeatedly executes a statement until a

specified condition becomes true.

DROP Statement

The DROP statement disassociates an identifier from an index register reserved by a

USE statement or from a label.

FOR Statement

The FOR statement is a pretest loop that repeatedly executes a statement while

incrementing or decrementing an index.

GOTO Statement

The GOTO statement unconditionally transfers program control to a labeled statement.

CODE ( instruction [ ; instruction ] ... )

No. Instruction Form

1. { mnemonic }

2. { mnemonic [ . | @ ] identifier }

3. { mnemonic constant }

4. { mnemonic register }

5. { mnemonic [ . | @ ] identifier [ , register ] }

6. { mnemonic constant [ , register ] }

DO [ statement ] UNTIL condition

DROP identifier [ , identifier ] ...

FOR index := initial-value { TO } limit [ BY step ]

{ DOWNTO }

DO [ statement ]