TAL Reference Manual

Privileged Procedures

TAL Reference Manual—526371-001

15-8

'SG'-Equivalenced Simple Pointer

The 'SG'-equivalenced simple pointer declaration associates a simple pointer with a

location relative to the base address of the system global data area.

type

is any data type except UNSIGNED and specifies the data type of the value to

which the pointer points.

. (period)

is the standard indirection symbol and denotes 16-bit addressing, in this case in

the system global data area.

.SG

is the system global indirection symbol and denotes 16-bit addressing in the

system global data area.

.EXT

is the extended indirection symbol and denotes 32-bit addressing.

identifier

is the identifier of a simple pointer to be made equivalent to 'SG'.

'SG'

is the symbol that denotes the base address of the system global data area;

identifier is addressed relative to SG[0].

VST1505.vsd

[

index

]

offset

identifier

.SG

;

.EXT

'SG'

type