pTAL Conversion Guide

pTAL Built-In Routines

pTAL Conversion Guide—527302-002

18-28

$FREEZE

$FREEZE asserts a system freeze and halts the processor in which its process is

running.

$FREEZE halts the processor in which the process that calls it is running. $FREEZE

also halts other processors in the same node if they have set FREEZE-ENABLE.

$HALT

$HALT halts the processor in which its process is running.

Note. The EpTAL compiler does not support this procedure. Use $TRIGGER on page 18-48

instead. (The EpTAL compiler does allow $FREEZE as a DEFINE name.)

pTAL privileged procedure Yes

Can be executed only by privileged procedures Yes

Sets condition code No

Sets $CARRY No

Sets $OVERFLOW No

Figure 18-8. TAL Code Equivalent to $FREEZE Routine

CODE(SFRZ);

Example 18-19. Call to $FREEZE Routine

$FREEZE;

Note. The EpTAL compiler does not support this procedure. Use $TRIGGER on page 18-48

instead. (The EpTAL compiler does allow $FREEZE as a DEFINE name.)

$FREEZE

VST619.vsd

$HALT

VST620.vsd