Asynchronous Serial Communications Programmer's Reference Manual (32022-90052)

Chapter 9 281

Intrinsics Reference (cont)

RESETCONTROL

Allows another subsystem break to occur.

Syntax

RESETCONTROL;

Use

The RESETCONTROL intrinsic lets the calling process accept another

subsystem break signal. (

[CTRL]Y is the default subsystem break

character.) The process must have previously enabled a

[CTRL]Y trap

with the XCONTRAP intrinsic. After your

[CTRL]Y trap handler has

been invoked, you should call RESETCONTROL when you are ready to

receive another

[CTRL]Y signal. RESETCONTROL can be called from

within the

[CTRL]Y trap handler or from any other procedure.

Parameters

None.

Condition Codes

CCE Request granted.

CCG Not returned by this intrinsic.

CCL Request denied because the trap handling procedure

was not invoked or because RESETCONTROL was

already called.

Additional Discussion

See the discussion of resetting the [CTRL]Y trap in Accessing Files, Trap

Handling, and Data Type Conversion Programmer’s Guides. See also

discussions of FCONTROL(16,17) and XCONTRAP in this manual. See

Chapter 5, “Using Subsystem Break,” of this manual for an example

illustrating subsystem break processing.