pTAL Reference Manual (H06.08+)

Pointers

HP pTAL Reference Manual—523746-006

10-9

BADDR and WADDR

The address type of pointers is WADDR, except for STRING pointers, for which the

address type is BADDR.

SGBADDR, SGWADDR, SGXBADDR, and SGXWADDR

(System Globals)

The address type of a pointer to system global data is one of SGBADDR, SGWADDR,

SGXBADDR, or SGXWADDR. You can declare pointers to system global data by using

either .SG notation or .SGX notation. In either case, the pointer is not in system

globals, but the data is. pTAL allocates 16 bits for pointers you declare with .SG and 32

bits pointers declared with .SGX.

Example 10-4. BADDR and WADDR

INT a; ! Variable: address type is WADDR

INT .b; ! Pointer: address type is WADDR

STRING .c; ! Pointer: address type is BADDR

INT(32) d[0:9]; ! Direct array: address type is WADDR

INT .e[0:9]; ! Indirect array: address type is WADDR

Example 10-5. SGBADDR, SGWADDR, SGXBADDR, and SGXWADDR

STRING .SG s; ! s is 16 bits

INT .SG i; ! i is 16 bits

STRING .SGX t; ! t is 32 bits

INT .SGX j; ! j is 32 bits