Propagate Byte (PROPB)

Built-in number for PROPB is 10.
PROPB (
       target_string       : address of aggregate(*)
       source_byte         : signed binary(4) - rightmost byte specifies
                                                the source byte value  OR
                             unsigned binary(1)  OR
                             aggregate(1)
       propagation_count   : unsigned binary value which specifies the
                             number of times the value specified by
                             source byte should be propagated
) :   space pointer(16) to the target string

Description:   The byte value specified by source byte is copied into the storage specified by target string. Propagation count specifies the number of bytes of storage into which this value is stored. It is assumed sufficient storage exists at the location specified by target string.

If the value of progagation count is 0, no storage is altered.

Authorization Required

• None

Lock Enforcement

• None

Exceptions

06 Addressing

• 0601 Space Addressing Violation
• 0602 Boundary Alignment

24 Pointer Specification

• 2401 Pointer Does Not Exist

44 Protection Violation

• 4401 Object Domain or Hardware Storage Protection Violation
• 4402 Literal Values Cannot Be Changed