TAL Reference Manual

Privileged Procedures

TAL Reference Manual—526371-001

15-4

'SG'-Equivalenced Variable Declarations

'SG' equivalencing associates a global, local, or sublocal identifier with a location that

is relative to the base address of the system global area. You can declare the following

kinds of 'SG'-equivalenced variables:

•

'SG'-equivalenced simple variable

•

'SG'-equivalenced structure

•

'SG'-equivalenced simple pointer

•

'SG'-equivalenced structure pointer

'SG'-Equivalenced Simple Variable

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

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

type

is any data type except UNSIGNED and specifies the data type of identifier.

identifier

is the identifier of a simple variable 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].

index and offset

are equivalent INT values in the range 0 through 63.

VST1502.vsd

'SG'

type

identifier

;

[

index

]

offset