CPGuide - Generic IOCtl Commands

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Control Program Programming Guide and Reference
Introduction to the Control Program Control Program Functions Keyboard Functions Mouse Functions Video Functions Data Types Errors Debugging Kernel Debugger Communications Protocol Device I/O Dynamic Linking Error Management Exception Management Extended Attributes File Management File Names File Systems Generic IOCtl Commands Memory Management Message Management National Language Support Pipes Program Execution Control Queues Semaphores Timers Notices Glossary

Generic IOCtl Function Table

Category 01h ASYNC (RS232-C) Control IOCtl Commands

Asynchronous (RS232-C) Communications Physical Device Driver

Hardware Support

IBM PS/2 Micro Channel Adapter Support

AT Bus Adapter Support

Attachment Support

RS232-C Interface

Hardware Support for Extended Hardware Buffering

INS 8250, INS 8250-B Considerations

Supported Bit Rates on 16450 and Compatibles

ASYNC (RS232-C) Device Driver Features

Output Modem Control Signals

Input Modem Control Signals

Logical Flow Control (XON/XOFF)

Support for Extended Hardware Buffering

Line Characteristics

Break and Error Processing

State of the COM Port

Event Notification

Error Alert Generation

States of the ASYNC Device Driver

           Automatic Receive Flow Control (XON/XOFF)
           Automatic Transmit Flow Control (XON/XOFF)
           Bit Rate
           Break Replacement Character
           Break Replacement Character Processing
           COM Event WORD and COM Error WORD
           Data Bits
           DTR and RTS
           DTR Control Mode
           Error Replacement Character
           Error Replacement Character Processing
           Extended Hardware Buffering
           Input Sensitivity Using DSR
           Null Stripping
           Output Handshaking Using CTS, DSR, DCD
           Parity
           RTS Control Mode
           Read Timeout State
           Read Timeout Value
           Stop Bits
           Transmit Immediate
           Transmitting Break
           Write Timeout State
           Write Timeout Value
           XON/XOFF Characters

Reserved Device Names (COM1-n)

IBM PS/2 (with Micro Channel) Considerations for COM1-4

====Initialization/Resource Management

Initialization Considerations

Data Translation/Monitor Support/Spooler Support

ASYNC Communication Device Driver Interfaces

File System Requests

Open Processing

Close Processing

Read Processing

Write Processing

Access Authorization

ASYNC (RS232-C) Generic IOCtl Command Summary

DOS Session Considerations/Restrictions

Spooler Considerations

Performance

Enabling Extended Hardware Buffering