====================================================== = = = = = Parallel Port Information System = = = = version 1.45 = = = = by = = = = Jay Lowe = = Don Schuman = = = = Parallel Technologies, Inc. = = = = = ====================================================== Version 1.45 27 Oct 1994 Reference Sites for Parallel Compuserve Home: IBMHW forum (go IBMHW) Internet Home: netlab2.usu.edu/misc ====================================================================== Parallel.Exe, v1.45, 27 Oct 1994 Parallel Technologies, Inc. Parallel Port Information Utility 10603 170th Ct NE (C) Copyright 1993-1994 Jay Lowe Redmond, WA 98052 This program may be used Lab 206-869-1136 free of charge subject to the Fax 206-869-1133 Restricted License Agreement Compuserve 76640,203 as stated below Internet jaylowe@halcyon.com ====================================================================== Parallel Port Information System Page 2 --------------------------------------------------------------------------- Front Matter ------------ IMPORTANT: This software is provided AS-IS under a license agreement stated below (see SOFTWARE LICENSE AGREEMENT). YOU ARE RESPONSIBLE for the safe usage of this program. This requires that you READ THE DIRECTIONS if you are going to use the loopback feature for IRQ detection. We are informing you of the danger of physically damaging your parallel port if you are not CAREFUL AND GENTLE when inserting the loopback wire. We strongly recommend that you follow the procedure of making a LOOPBACK EXTENSION CABLE as described below. To the best of our (extensive) knowledge, there is no electrical danger to yourself or to your system or to the parallel port, since parallel ports are designed to withstand permanent shorts across any of their pins. HOWVER WE DO NOT GUARANTEE AN OF THIS AND CAN ACCEPT NO LIABILITY since we cannot control what you or your vendor may do. Parallel.Exe, Parallel.Doc, and all of the associated components of this utility are copyrighted material and may not be reproduced, redistributed, or sold without the express written consent of Parallel Technologies, Inc, except as provided by the License Agreement. Some of the terms, names, and/or symbols used in this document are the trademarks of the companies which own them. Permission is hereby given for distribution of Parallel on a not-for- profit basis. Users may upload and share Parallel, provided it is not modified in any way. Vendors may make Parallel available via bulletin boards or other electronic forums, but may not distribute Parallel with their products without the permission of Parallel Technologies, Inc. Shareware vendors and other software distributors may distribute Parallel provided they do not charge more than $10 per copy. Support for Parallel and parallel port related issues is available only via Compuserve or Internet Email to the addresses given on the cover page of this manual. Parallel Technologies, Inc. does not provide telephone support for this program. Parallel Port Information System Page 3 --------------------------------------------------------------------------- Acknowledgements ---------------- We would like to express our appreciation to the many people and organizations who have given of their time and expertise to provide information and support for Parallel in various ways. Some of these contributors include: Parallel Port Chipset Vendors: Intel Corporation Standard Microsystems Corporation National Semiconductor Chips and Technologies Parallel Port Direct Sales Vendors: Farpoint Communications JAZ Computer Products Essential Data, Inc. Standards Organizations: Members of the EPP Standards Committee Members of the IEEE 1284 Standards Committee Individuals: Larry Stein, Farpoint Communications Prof. Joe Dupnik, Utah State University Don Watson, Compuserve IBMHW Forum Sysop The users: who have reported test results, bugs, and feature requests! And the innumerable hackers who have gone before. My thanks to all of you for your generosity. And if I've left anyone out, my apologies. Please remind me. Parallel Port Information System Page 4 --------------------------------------------------------------------------- Table of Contents ----------------- FRONT MATTER 2 ACKNOWLEDGEMENTS 3 TABLE OF CONTENTS 4 WELCOME TO THE PARALLEL PORT INFORMATION UTILITY 7 QUICK STARTING PARALLEL 8 DETAILED PROGRAM OPERATION 9 How to Prepare Your System for Best Results 9 How to Run Parallel.Exe 9 How to Get Quick Help 9 How to Prevent Scrolling 9 How to Save Parallel's Output 9 How to Avoid the Funny Line Drawing Characters 9 How to get Help with your Parallel Port Questions 10 INTERPRETING PARALLEL'S DISPLAY 11 Parallel Port Type 11 No Port 11 4bit ports 12 8bit ports 13 EPP ports 14 ECP ports 16 IO Address 18 Understanding the IRQ Level 20 Understanding the BIOS Name 22 Understanding the Notes and Comments 24 Parallel Port Information System Page 5 --------------------------------------------------------------------------- AUTOMATIC IRQ DETECTION 30 Understanding Port Float 30 IRQ detection using the LoopBack Feature 31 TechNote: Making Your Own Loopback Connector 33 MISCELLANEOUS TOPICS 34 Technote: Pseudo-Bidirectional Ports, A Special Case 34 PARALLEL PORT STANDARDS 35 4bit and 8bit parallel ports 35 EPP Specification 35 ECP Specification 35 IEEE 1284 Specification 36 Parallel Port Standards Diagram 37 PARALLEL PORT BUYER'S GUIDE 38 4bit parallel ports 38 8bit parallel ports 38 EPP Parallel Ports 39 ECP Parallel Ports 41 Advanced Parallel Port Chipsets 42 VENDOR CONTACT INFORMATION 44 TECHNICAL SUPPORT 45 ABOUT PARALLEL TECHNOLOGIES, INC. 46 Firsts,...
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