Advanced Input/Output Functions
This appendix discusses the advanced I/O (input/output) functions. The CIO (call I/O) function enables you to control the operation of a simulated peripheral device. Before using the CIO function, you should be familiar with the information in Appendix A. By using the KW (key wait) function, your program can read individual keystrokes as they occur.
Table Of Contents
Introduction
The Parameters in a PAB
Command Codes
The Open Command
The Read and Write Commands
I/O Error Codes
Performing an I/O Operation From a Program
Example: Using CIO to Control a Peripheral
Reading Keystrokes from a Program☚ Back