gtps1m2eSystem Macros

DSDAC-Dismount a Symbolic Device Address (SDA)

Use this system macro to perform a software dismount of a symbolic device address (SDA) that is associated with an input/output (I/O) device. Once this macro is processed for an SDA, the SDA is unavailable for any additional I/O until another MSDAC macro is issued for the SDA.

See MSDAC-Mount a Symbolic Device Address (SDA) for more information about the MSDAC macro.

Format




label
A symbolic name can be assigned to the macro statement.

SDA
The SDA, which can be either of the following:

label1
A halfword field that contains an SDA.

(reg)
A register that contains an SDA in bytes 2-3 and zeros in bytes 0-1.

Entry Requirements

Return Conditions

Programming Considerations

Examples

None.