NOVELL TECHNICAL INFORMATION DOCUMENT TITLE: AIOCOMX V.2.11 DOCUMENT ID: TID250188 DOCUMENT REVISION: C DATE: 06JUL94 ALERT STATUS: Yellow INFORMATION TYPE: Issue README FOR: COMX.EXE NOVELL PRODUCT and VERSION: NetWare Global MHS 2.0 ABSTRACT: A stand alone release of AIO.NLM and AIOCOMX.NLM, for Global MHS users. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 DISCLAIMER THE ORIGIN OF THIS INFORMATION MAY BE INTERNAL OR EXTERNAL TO NOVELL. NOVELL MAKES EVERY EFFORT WITHIN ITS MEANS TO VERIFY THIS INFORMATION. HOWEVER, THE INFORMATION PROVIDED IN THIS DOCUMENT IS FOR YOUR INFORMATION ONLY. NOVELL MAKES NO EXPLICIT OR IMPLIED CLAIMS TO THE VALIDITY OF THIS INFORMATION. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 SYMPTOM COMX.EXE provides AIOCOMX.NLM and AIO.NLM for Novell asynch products. NOTE: This AIOCOMX.NLM is NOT a general purpose comm port driver. Novell has only tested this driver with Global MHS, and NetWare Connect. SOLUTION Use the files in COMX.EXE according to the instructions below. 1. AIO requires that the comm ports be numbered starting from zero and that they have contiguous numbers. Therefore include a "node=" parameter on the command line. For example: LOAD AIOCOMX PORT=3F8 INT=4 NODE=0 NAME=COM1 sets the board number for this invocation of the driver to zero. Succeeding load commands for the driver require "node=1", "node=2" ... 2. AIOCOMX determines whether or not the port has a 16550 UART. If a 16550 UART is detected, the maximum port speed defaults to 19.2kbps. If a 16550 UART is not detected the maximum port speed defaults to 2400bps. However, some devices (including many internal modems) are capable of properly supporting a higher speed than the default values. If you have a buffered device capable of supporting speeds higher than the default rate, use the following load command where N is the maximum speed rating override: For example: LOAD AIOCOMX MAXRATE=14400 PORT=3F8 INT=4 NODE=0 NAME=BOARD0 would set an internal modem at comm1 to 14.4. NOTE!! In theory, very high speeds can be set. However, it is important the MAXRATE command not be abused. A. The practical safe speed is determined by the buffering ability of the communications device. B. Even with extremely capable devices, speeds above 38400 are likely to result in lost characters. C. The CPU of a busy file server will be stressed, if it has to drive a comm port at very high speeds. 3. Other available AIOCOMX load parameters are: - PORT=N Where N is the hexadecimal port address which the device resides. - INT=N Where N is the interrupt number assigned to the particular port. - NAME=Y Where Y is the user defined name which correlated to the board loaded. - NODE=N Where N is the decimal number which will override the hardware defined board number. Ordinarily COM1 is assigned board 0, and COM2 is assigned board 1. - FORCE FORCE overrides hardware device validation, resulting in the driver using the specified hardware resources regardless of whether they exist. - NOFIFO NOFIFO will override the automatic selection of 16550 FIFO mode. Regardless of whether 16500 FIFO mode capability has been detected. - RXT=N Where N is the default override value to use for the transmitter data queue, when 16550 FIFO mode has been selected. - TXQ=N Where N is the default override value to use for transmitter data queue, when 16550 FIFO mode has been selected. Self-Extracting File Name: COMX.EXE Revision: C Files Included Size Date Time \ COMX.TXT (This File) AIO.NLM 83033 05-04-94 2:11p AIOCOMX.NLM 17537 06-01-94 1:35p Installation Instructions: Copy AIO.NLM and AIOCOMX.NLM to the SYSTEM subdirectory of the SYS Volume. Patch History: This release of AIO.NLM and AIOCOMX.NLM is supersedes all prior versions for Global MHS. NOTE: These files also work with NetWare Connect 1.0. However, NetWare Connect administrators should download the latest specific NetWare Connect patch. Performance Issues: 1. AIOCOMX automatically configures itself to run in enhanced (FIFO) mode if it detects a 16550 UART. The receiver data threshold and transmit queues for the FIFOs can be changed by the user if this mode is allowed, but their default values are probably optimal. If a 16550 device is not present in your system the user is prohibited from attempting to place the driver in enhanced mode. 2. Only ONE port is loaded for each installation of the driver. 3. Operates in both NetWare 3.x and 4.x environments. 4. Multiple command line options available at driver load time. 5. Driver command line load information is available by entering 'LOAD AIOCOMX ?' at server prompt. (The driver will not be loaded.) 6. Allows AIO applications to use the built in serial ports on the server or those of an add in card that emulates standard serial ports. Up to four such ports can be supported. Each port requires it's own interrupt. �