LTORG

Set an origin for a literal pool.

MAP

Set the origin of a storage map.

FIELD

Define a field within a storage map.

SPACE or FILL

Allocate a zeroed block of memory.

DCB

Allocate bytes of memory, and specify the initial contents.

DCD and DCDU

Allocate words of memory, and specify the initial contents.

DCDO

Allocate words of memory, and specify the initial contents as offsets from the static base register.

DCFD and DCFDU

Allocate doublewords of memory, and specify the initial contents as double-precision floating-point numbers.

DCFS and DCFSU

Allocate words of memory, and specify the initial contents as single-precision floating-point numbers.

DCI

Allocate words of memory, and specify the initial contents. Mark the location as code not data.

DCQ and DCQU

Allocate doublewords of memory, and specify the initial contents as 64-bit integers.

DCW and DCWU

Allocate halfwords of memory, and specify the initial contents.

COMMON

Allocate a block of memory at a symbol, and specify the alignment.

DATA

Mark data within a code section. Obsolete, for backwards compatibility only.