pTAL Reference Manual (H06.08+)

Built-In Routines

HP pTAL Reference Manual—523746-006

15-27

$BADDR_TO_WADDR

expression

is an expression whose value is a BADDR address.

$BADDR_TO_WADDR

$BADDR_TO_WADDR converts a BADDR address to a WADDR address.

expression

is an expression whose value is a BADDR address.

The result of $BADDR_TO_WADDR is undefined if the least significant bit of

expression is 1. The least significant bit of an address is not truncated when a byte

address is converted to a word address—the address is not rounded down to the

preceding even-byte address.

pTAL privileged procedure No

Can be executed only by privileged procedures No

Sets condition code Yes

Sets $CARRY No

Sets $OVERFLOW No

Example 15-13. $BADDR_TO_EXTADDR Routine

STRING .EXT s;

STRING t;

@s := $BADDR_TO_EXTADDR(@t); ! @t is a BADDR address

pTAL privileged procedure No

Can be executed only by privileged procedures No

Sets condition code Yes

Sets $CARRY No

Sets $OVERFLOW No

Example 15-14. $BADDR_TO_WADDR Routine

INT .i;

STRING s;

@i := $BADDR_TO_WADDR(@s); ! @s is a BADDR address

expression

( )

VST684.vsd

$BADDR_TO_WADDR