pTAL Reference Manual (H06.03+)

Built-In Routines

HP pTAL Reference Manual—523746-005

15-93

$UNLOCKPAGE

$UNLOCKPAGE unlocks one page of memory..

unlockcount input

sINT:value

is the total number of bytes to unlock in the page.

virtaddr input

EXTADDR:value

is the beginning virtual address to unlock. $UNLOCKPAGE calculates the page

associated with virtaddr.

$WADDR_TO_BADDR

$WADDR_TO_BADDR converts a WADDR address to a BADDR address.

Note. The EpTAL compiler does not support this procedure.

pTAL privileged procedure Yes

Can be executed only by privileged procedures Yes

Sets condition code Yes

Sets $CARRY No

Sets $OVERFLOW No

Example 15-92. $UNLOCKPAGE Routine

INT unlockcount;

EXTADDR addr;

$UNLOCKPAGE(unlockcount, addr);

$UNLOCKPAGE

( unlockcount , )

;

virtaddr

VST655.vsd

expression( )

VST691.vsd

$WADDR_TO_BADDR