gtps1m2cSystem Macros

DLCKC-Modify Lock and I/O Interrupt Status

Use this system macro to:


Required Authorizations
Key0 Restricted System Common Storage

X X

Format




label
An optional label can be used with this macro.

LKWORD=(reg)
A register containing the address of a doubleword lock field. R0 through R7 are valid registers. This parameter is required.

FUNC
Specify one of the following:

LOCK
The lockword specified by the LKWORD parameter will be locked and I/O interrupts will be disabled on the I-stream issuing this macro.

UNLOCK
The lockword specified by the LKWORD parameter will be unlocked and I/O interrupts will be enabled on the I-stream issuing this macro.

Entry Requirements

Return Conditions

Programming Considerations

This macro can only be used by ECB-controlled programs.

Examples