TAL Reference Manual

Structures
TAL Reference Manual—526371-001
8-14
Usage Considerations
type
is any data type except UNSIGNED. The data type determines how much data the
simple pointer can access at a time—a byte, word, doubleword, or quadrupleword.
. (period)
is the standard indirection symbol and denotes a standard (16-bit) pointer.
.EXT
is the extended indirection symbol and denotes an extended (32-bit) pointer.
identifier
is the identifier of the simple pointer.
Usage Considerations
The data type determines the size of data a simple pointer can access at a time, as
listed in Table 8-3
:
The addressing mode and data type determines the kind of address the simple pointer
can contain, as described in Table 8-4
.
Table 8-3. Data Accessed by Simple Pointers
Data Type Accessed Data
STRING Byte
INT Word
INT (32) Doubleword
REAL Doubleword
REAL (64) Quadrupleword
FIXED Quadrupleword
Table 8-4. Addresses in Simple Pointers
Addressing
Mode Data Type Kind of Addresses
Standard STRING 16-bit byte address in the lower 32K-
word area of the user data segment.