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QS-100D
Four Channel RS-232 Asynchronous
Communications Adapter
for ISA compatible machines
INTERFACE CARDS FOR IBM PC/AT AND PS/2
User's Manual
QUATECH, INC. TEL: (330) 655-9000
5675 Hudson Industrial Parkway FAX: (330) 655-9010
Hudson, Ohio 44236 http://www.quatech.com
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Warranty Information Quatech Inc. warrants the QS-100D to be free of defects for one (1) year from the date of purchase. Quatech Inc. will repair or replace any adapter that fails to perform under normal operating conditions and in accordance with the procedures outlined in this document during the warranty period. Any damage that results from improper installation, operation, or general misuse voids all warranty rights. The authors have taken due care in the preparation of this
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© 1993, Quatech, Inc. NOTICE The information contained in this document cannot be reproduced in any form without the written consent of Quatech, Inc. Likewise, any software programs that might accompany this document can be used only in accordance with any license agreement(s) between the purchaser and Quatech, Inc. Quatech, Inc. reserves the right to change this documentation or the product to which it refers at any time and without notice. The authors have taken due care in the preparation o
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Declaration of Conformity Manufacturer's Name: Quatech Inc. Manufacturer's Address: 5675 Hudson Industrial Parkway Hudson, Ohio 44236 (USA) Application of Council Directive: 89/336/EEC Standards to which Conformity is Declared: * EN50081-1 (EN55022, EN60555-2, EN60555-3) * EN50082-1 (IEC 801-2, IEC 801-3, & IEC 801-4) Type of Equipment: Information Technology Equipment Equipment Class: Commercial, Residential, & Light Industrial Product Name: ISA Communications Card Model Numbe
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Table of Contents 1. General Information ..................................... 1-1 1.1 Explanation of Packages ................................... 1-1 2. Hardware Installation .................................... 2-1 2.1 Setting the Base Address ................................... 2-2 2.2 Setting the Interrupt Level (IRQ) ............................. 2-4 2.3 Configuring Interrupt Sharing ............................... 2-4 2.4 Interrupt Status Register .................................... 2-5
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1. General Information The Quatech, Inc. QS-100D provides four RS-232 asynchronous serial communication interfaces for IBM-compatible personal computer systems using the 16-bit ISA (Industry Standard Architecture) expansion bus. The QS-100D is highly flexible with respect to addressing and interrupt level use. The serial ports are addressed in a contiguous block that can be placed anywhere within the range of 0000 hex to FFFF hex, and available interrupt levels include IRQ2 to IRQ7, IRQ10 to IR
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1.1.1 IND Package The IND upgrade on the QS-100IND and QS-100IND750 boards provides the protection essential for reliable use in an industrial environment. Special line drivers and receivers are used which have 15kV ESD (Electro Static Discharge) protection, and each communication line has a surge suppressor capable of sustaining up to 40A transient surges (at 14V). 1.1.2 UART Upgrade The UART upgrade on the QS-100D750 and QS-100IND750 boards provides a 16750 UART in place of the 16550 UART foun
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Figure 2 --- Diagram of QS-100D QS-100D User's Manual 1-3
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(This Page Intentionally Left Blank) 1-4 Quatech Inc.
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2. Hardware Installation If the default address and interrupt settings are sufficient, the QS-100D can be quickly installed and put to use. The factory defaults are listed in Figure 3. PORT ADDRESS IRQ Serial 1 300 hex 3 Serial 2 308 hex 3 Serial 3 310 hex 3 Serial 4 318 hex 3 Figure 3 --- Default address and IRQ settings for QS-100D The output of the QS-100D is a 37-pin D-connector labeled CN1. A cable is provided to convert the D-37 into four standard male D-25 connectors with all control s
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2.1 Setting the Base Address The base address of the QS-100D is set using the two DIP switch packs. When setting the address selection switches, a switch in the "ON" position specifies that the corresponding address line must be a logic 0 for the port to be selected. Similarly, a switch in the "OFF" position forces the corresponding address line to be a logic 1 for the port to be selected. A full sixteen bit address decode is implemented to reduce the chance of address conflicts with other ad
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A serial port's address is a 16-bit quantity that is most often expressed in four hexadecimal (base 16) digits. A hex digit can hold a value from 0 to 15 (decimal), and is made up of four binary bits given weights of eight, four, two, and one, hence the maximum value of 8+4+2+1 = 15. A possible serial port address is 5220 hex. The example below shows how the hex digits are broken down into binary bits. Binary bits 0 1 0 1 0 0 1 0 0 0 1 0 0 0 0 0 Bit weight 8 4 2 1
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2.2 Setting the Interrupt Level (IRQ) The QS-100D allows the use of any interrupt level in the range IRQ2 to IRQ7, IRQ10 to IRQ12, IRQ14, or IRQ15, selected using jumper pack J6. (Early versions of the QS-100D are limited to IRQ2-7.) In Figure 6, the factory default setting of IRQ3 is shown. To select a different IRQ, move the jumper to the appropriate position on J6. 13 14 15 16 17 18 19 20 21 22 12 12 34 5 6 7 8 9 10 11 Default is IRQ 3 --- J6 Figure 6 --- Interrupt level (IRQ) selection
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The QS-100D signals a hardware interrupt when any port requires service. The interrupt signal is maintained until no port requires service. Because the ISA bus is edge-sensitive, this behavior forces the interrupt service routine to ensure that all ports are checked before exiting. A way to do this is to poll each port until an interrupting port is found. After servicing the port, all ports should be checked again. If any interrupting port is left unserviced the QS-100D will be unable to si
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7 (MSB) 0 (not used) 6 0 (not used) 5 0 (not used) 4 0 (not used) 3 Serial 4 --- 1 if interrupt pending 2 Serial 3 --- 1 if interrupt pending 1 Serial 2 --- 1 if interrupt pending 0 Serial 1 --- 1 if interrupt pending Figure 9 --- Interrupt Status Register contents 2-6 Quatech Inc.
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3. Windows 95 Configuration Windows 95 maintains a registry of all known hardware installed in your computer. Inside this hardware registry Windows 95 keeps track of all of your system resources, such as I/O locations, IRQ levels, and DMA channels. The "Add New Hardware Wizard" utility in Windows 95 was designed to add new hardware and update this registry. An “INF” configuration file is included with the QS-100D to allow easy configuration in the Windows 95 environment . Also a custom Windo
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5. A list box opens with Manufacturers on the left and the associated board Models on the right. Click the “Have Disk” button. 6. An Install From Disk dialog box should pop up. Insert the diskette with the Quatech INF files on it, select the correct drive letter, and click the “OK” button. Windows 95 automatically browses the root directory for an INF file that defines configurations for Multi-function Adapters. If no INF files are found, click the “Browse” button and search the Win95 sub dir
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12. You are required to manually configure the QS-100D to match the resources allocated by Windows 95. Another option is to use the “Device Manager” in Windows 95 to change the system resources allocated in Windows 95 to match your preferences. See chapter 2 for information on installing and configuring the QS-100D. 3.2 Viewing and Changing Resources with Device Manager The following instructions provide step-by-step instructions on viewing and changing resources of the QS-100D in Windows 95 u
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Figure 10--- Windows 95 Device Manager 6. If the “Change Settings” button was selected an Edit Resource window will open up. Inside these Edit Resource windows click on the up/down arrows to the right of the resource value. This scrolls you through all of the allowable resources for your hardware. Pay attention to the Conflict Information at the bottom of the window. Do not select a resource that causes a conflict with any other installed hardware. Click “OK” to save your changes, or “Canc
