pTAL Reference Manual (H06.08+)

Built-In Routines

HP pTAL Reference Manual—523746-006

15-80

$READCLOCK

$READCLOCK returns the current setting of the system clock as a FIXED value.

$READSPT

$READSPT returns (copies) an entry from the Segment Page Table (SPT).

virtaddr input

EXTADDR:value

is the virtual address of the SPT entry to copy.

pTAL privileged procedure No

Can be executed only by privileged procedures No

Sets condition code No

Sets $CARRY No

Sets $OVERFLOW No

Example 15-76. $READCLOCK Routine

FIXED the_time;

the_time := $READCLOCK; ! Return current clock time

Note. The EpTAL compiler does not support this procedure.

pTAL privileged procedure No

Can be executed only by privileged procedures Yes

Sets condition code No

Sets $CARRY Yes

Sets $OVERFLOW No

VST108.vsd

$READCLOCK

( ,

)

VST650.vsd

$READSPT

virtaddr sptentryaddr