pTAL Reference Manual (H06.08+)

Equivalenced Variables

HP pTAL Reference Manual—523746-006

11-24

Equivalenced Definition Structure

An equivalenced definition structure declaration associates a definition structure with a

location relative to a system global ('SG') or extended system global ('SGX') base

address.

.EXT

.SG

.SGX

are indirection symbols (see Table 2-7 on page 2-7).

identifier

is the identifier of a definition structure to be made equivalent to 'SG'.

'SG'

denotes a 16-bit system global address.

index

is an INT constant that specifies the offset of the element in previous-ident to

which the equivalenced pointer or variable refers. Specify index only with direct

variables. index must end on a word boundary.

Example 11-14. Equivalenced Simple Variable Declaration

INT item = 'SG' + 15;

STRUCT

identifier

[

offset

index

]

;

structure-layout

'SG'

;

VST710.vsd

.EXT

.SG

.SGX