Chapter 4 Using FDEVICECONTROL

Table of Contents

Many of the asynchronous device control functions that can be performed through FCONTROL can be performed through FDEVICECONTROL as well. In addition, FDEVICECONTROL allows you to perform a number of device control functions that are not available through use of FCONTROL. Chapter 3 “Common Device Control Functions” in this manual provides some practical examples of how you can use FCONTROL in a program to control asynchronous devices.

This chapter describes how you might use FDEVICECONTROL to perform additional device control functions. It includes program fragments to illustrate the use of the intrinsic. The text which accompanies the examples will contrast the use of the FDEVICECONTROL and FCONTROL.

Examples in this chapter illustrate using FDEVICECONTROL to perform the following functions:

Enable/disable transparent editing mode
Specify a new end-of-record character.
Change the backspace character and backspace response at a terminal.
Enable/Disable device XON/XOFF.
Combine enable/disable escape sequence read termination function with the enable/disable suppress echo of read termination characters function.
Specify the number of stop bits.

Refer to Chapter 8 “Intrinsics Reference” for a complete summary of the functions available through FDEVICECONTROL and for full explanations of its syntax and parameter values.

Chapter 4 Using FDEVICECONTROL

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