COM-2(PC)F RS-232C (2ch) Serial I/O Board User’s Guide
Copyright Copyright 1996 CONTEC Co., LTD. ALL RIGHTS RESERVED No part of this document may be copied or reproduced in any form by any means without prior written consent of CONTEC Co., LTD. CONTEC Co., LTD. makes no commitment to update or keep current the information contained in this document. The information in this document is subject to change without notice. All relevant issues have been considered in the preparation of this document.
Product Configuration - COM-2(PC)F Board…1 - Sample Program Diskette (3.5inch/1.44MB)…1 - User's Guide (This Booklet)…1 Unpacking: This board is specially packed in an anti-static bag to prevent damage in shipping. Check the contents to make sure that you have everything listed above. If you do not have all the items, contact your distributor or CONTEC group office where you purchased. Note! Do not remove the board from its protective packaging until the computer case is open and ready for installation.
Table of Contents Copyright ............................................................................i Trademarks ........................................................................i Product Configuration ..................................................... ii 1. Introduction ............................................................. 1 About the COM-2(PC)F Board .....................................1 Support Software of Option..........................................1 Features.................
Mounting Method............................................................28 Connecting the External Devices...................................31 Connecting the Cable......................................................32 4. System Reference.................................................... 33 Specifications...................................................................33 Circuitry Diagrams .........................................................34 Block Diagram.....................................
List of Figures Figure 3.1. Names of Board Components and Default Factory Settings ..................................................................... 23 Figure 3.2. I/O Address DIP Switch............................................ 25 Figure 3.3. Interrupt Level Settings............................................. 26 Figure 3.4. Rear Panel of IBM-PC/AT......................................... 28 Figure 3.5. Removing the Cover.................................................. 28 Figure 3.6.
Figure 6.11.Flowchart of Sample Program 9 ................................ 53 Figure 6.12.Flowchart of Sample Program10 ............................... 54 Figure 6.13.Flowchart of Sample Program 11 .............................. 55 Figure 6.14. IVR Bit Function in Enhanced Mode........................ 61 Figure 6.15.Difference in Jumpers (JP1~JP3)...............................
List of Tables Table 2.1. COM Port Support for Various Programming Languages................................................................. 21 Table 3.1. I/O Address Settings ................................................. 25 Table 3.2. Example Compatible Mode Settings ......................... 27 Table 4.1. Specifications............................................................ 33 Table 6.1. Data Format .............................................................. 40 Table 6.2.
viii COM-2(PC)F
Introduction 1. Introduction About the COM-2(PC)F Board The COM-2(PC)F is an IBM PC/AT ISA-Bus add-on interface board for multi-channel RS-232C asynchronous communications. It features two serial communication ports and a programmable communication rate ranging from 50 to 115,200 bps for communication or modem control. Support Software of Option - For Windows API-PAC(W32) - For Windows 3.
Introduction Limited Three-Year Warranty CONTEC Interface boards are warranted by CONTEC Co., LTD to be free from defects in material and workmanship for up to three years from the date of purchase by the original purchaser. Repair will be free of charge only when this device is returned freight prepaid with a copy of the original invoice and a Return Merchandise Authorization to the distributor or the CONTEC group office, from which it was purchased.
Introduction About the Manual This manual consists of the following chapters : Chapter 1 Introduction Chapter 2 How to Use the Board Chapter 3 Hardware Setup Chapter 4 I/O Ports and Registers Chapter 5 System Reference Chapter 6 Troubleshooting Chapter 7 Index COM-2(PC)F 3
Introduction 4 COM-2(PC)F
How to Use the Board 2. How to Use the Board Compatible Mode and Enhanced Mode The COM-2(PC)F supports Compatible mode and Enhanced mode. In Compatible mode, the board channels operate as standard PC serial ports. In Enhanced mode, the board operates under CONTEC's proprietary control procedures. Give full consideration to the features of each mode when selecting which mode to use in your system. Compatible Mode The two channels of the COM-2(PC)F can be used as standard PC serial ports.
How to Use the Board Operating under Windows Me/98 This section describes the procedure for using the board under Windows Me/98 and lists a number of points to note. Procedure When using the board under Windows Me/98, the OS must be set to recognize the I/O address and interrupt level used by the COM-2(PC)F. In Windows Me/98, this is called hardware installation. Use the following installation procedure. Check the Current Settings First, check the current settings.
How to Use the Board Compatible Mode Installation Procedure 1 1. Set the operation mode (I/O address) and interrupt level for the COM-2(PC)F. Set the COM-2(PC)F switch and jumpers as described in Hardware Setup. Set an interrupt level that is not currently used by the computer. 2. Insert the COM-2(PC)F in an expansion slot and turn on the power to the PC. 3. After Windows Me/98 starts, select [Control Panel] from [My Computer] and start the [Add New Hardware]. 4.
How to Use the Board Compatible Mode Installation Procedure 2 1. Turn on the power to the PC without inserting the COM-2(PC)F in an expansion slot. 2. After Windows Me/98 starts, select [Control Panel] from [My Computer] and start the [Add New Hardware]. 3. Click [Next >] in response to [To begin installing your new hardware, click Next] in the Add New Hardware Wizard. 4. Select [No] in response to [Do you want Windows to search for your new hardware ?]. 5.
How to Use the Board Enhanced Mode Installation Procedure When it is used with Enhanced Mode, API-PAC(W32) of the option is necessary. Refer to Help "HWINSTE.HLP" of the way of registering the hardware being attached to API-PAC(W32) for the way of installing it. Check Resources Always check the PC resources (I/O address and interrupt level) assigned to the COM-2(PC)F before actually using the board. Use the following procedure to check the resources managed by the OS. 1.
How to Use the Board Operating under Windows 95 This section describes the procedure for using the board under Windows 95 and lists a number of points to note. Procedure When using the board under Windows 95, the OS must be set to recognize the I/O address and interrupt level used by the COM-2(PC)F. In Windows 95, this is called hardware installation. Use the following installation procedure. Check the Current Settings First, check the current settings. Check which interrupt levels are available.
How to Use the Board Compatible Mode Installation Procedure 1 1. Set the operation mode (I/O address) and interrupt level for the COM-2(PC)F. Set the COM-2(PC)F switch and jumpers as described in Hardware Setup. Set an interrupt level that is not currently used by the computer. 2. Insert the COM-2(PC)F in an expansion slot and turn on the power to the PC. 3. After Windows 95 starts, select [Control Panel] from [My Computer] and start the [Add New Hardware]. 4.
How to Use the Board Compatible Mode Installation Procedure 2 1. Turn on the power to the PC without inserting the COM-2(PC)F in an expansion slot. 2. After Windows 95 starts, select [Control Panel] from [My Computer] and start the [Add New Hardware]. 3. Click [Next >] in response to [To begin installing your new hardware, click Next] in the Add New Hardware Wizard. 4. Select [No] in response to [Do you want Windows to search for your new hardware ?]. 5.
How to Use the Board Enhanced Mode Installation Procedure When it is used with Enhanced Mode, API-PAC(W32) of the option is necessary. Refer to Help "HWINSTE.HLP" of the way of registering the hardware being attached to API-PAC(W32) for the way of installing it. Check Resources Always check the PC resources (I/O address and interrupt level) assigned to the COM-2(PC)F before actually using the board. Use the following procedure to check the resources managed by the OS. 1.
How to Use the Board Operating under Windows 2000 This section describes the procedure for using the board under Windows 2000 and lists a number of points to note. Procedure When using the board under Windows 2000, the OS must be set to recognize the I/O address and interrupt level used by the COM-2(PC)F. In Windows 2000, this is called hardware installation. Use the following installation procedure. Check the Current Settings First, check the current settings. Check which interrupt levels are available.
How to Use the Board Compatible Mode Installation Procedure 1 It can’t be used with Compatible Mode when API-SIO(98/PC)NT of packing together is used for API-PAC(W32). 1. Set the operation mode (I/O address) and interrupt level for the COM-2(PC)F. Set the COM-2(PC)F switch and jumpers as described in Hardware Setup. Set an interrupt level that is not currently used by the computer. 2. Insert the COM-2(PC)F in an expansion slot and turn on the power to the PC. 3.
How to Use the Board Compatible Mode Installation Procedure 2 It can’t be used with Compatible Mode when API-SIO(98/PC)NT of packing together is used for API-PAC(W32). 1. Turn on the power to the PC without inserting the COM-2(PC)F in an expansion slot. 2. After Windows 2000 starts, select [Control Panel] from [My Computer] and start the [Add/Remove Hardware]. 3. Click [Next >] in response to [Welcome to the Add/Remove Hardware Wizard] in the Add/Remove Hardware Wizard. 4.
How to Use the Board Enhanced Mode Installation Procedure When it is used with Enhanced Mode, API-PAC(W32) of the option is necessary. Refer to Help "HWINSTE.HLP" of the way of registering the hardware being attached to API-PAC(W32) for the way of installing it. Check Resources Always check the PC resources (I/O address and interrupt level) assigned to the COM-2(PC)F before actually using the board. Use the following procedure to check the resources managed by the OS. 1.
How to Use the Board Operating under Windows NT This section describes the procedure for using the board under Windows NT and lists a number of points to note. Procedure First, set the operation mode (I/O address) and interrupt level for the COM-2(PC)F. Set the COM-2(PC)F switch and jumpers as described in Hardware Setup. When using the board in compatible mode, the OS must be set to recognize the I/O address and interrupt level used by the COM-2(PC)F.
How to Use the Board Operating under Windows 3.1 This section describes the procedure for using the board under Windows 3.1 and lists a number of points to note. Procedure First, set the operation mode (I/O address) and interrupt level for the COM-2(PC)F. Set the COM-2(PC)F switch and jumpers as described in Hardware Setup. When using the board in Compatible mode, the OS must be set to recognize the I/O address and interrupt level used by the COM-2(PC)F.
How to Use the Board Operating under MS-DOS This section describes the procedure for using the board under MS-DOS and lists a number of points to note. Procedure First, set the operation mode (I/O address) and interrupt level for the COM-2(PC)F. Set the COM-2(PC)F switch and jumpers as described in Hardware Setup. When using the board in Compatible mode, the system area of the PC must be set to recognize the I/O address used by the COM-2(PC)F. If a system configuration program or the MODE.
How to Use the Board Note! When used in Compatible mode, COM3 and COM4 are not supported by some programming languages. Check the specifications of the language you are using. Table 2.1. lists the COM ports supported by a number of common programming languages. Table 2.1.
How to Use the Board 22 COM-2(PC)F
Hardware Setup 3. Hardware Setup Names of Board Components Figure 3.1. shows the names of various board components. The switch and jumper settings shown in the figure are the default factory settings. Figure 3.1.
Hardware Setup I/O Address Setting The board is an I/O device controlled by I/O instructions from the PC. I/O devices include expansion boards and devices inside the PC. The various devices are identified by their I/O addresses. I/O addresses are represented as four digit hexadecimal values (e.g. 02A0H) and act as the ID number for each I/O device. Most expansion boards are controlled via a range of consecutive I/O addresses. The address of the first I/O address in the range is called the base I/O address.
Hardware Setup Setting Procedure 1 2 3 4 The I/O address is set using a DIP switch (SW1) on the board. O F F SW1 MODE 1 2 3 4 Figure 3.2. I/O Address DIP Switch Table 3.1.
Hardware Setup Interrupt Level Setting The signal from the LSI (NS16550 equivalent) on the board can be used as an interrupt request signal based on the JP1, JP2, and JP3 settings. Note! When using interrupts, set an interrupt level that is not used by any other device. Setting Procedure When not Using Interrupts Place a short connector on the NC pin of each jumper (JP1, JP2, and JP3). When Using Interrupts Connect the interrupt level using the short connector on each jumper (JP1, JP2, and JP3).
Hardware Setup Table 3.2. lists the I/O address and standard interrupt level settings for COM1 to COM4 (Compatible mode). Table 3.2. Example Compatible Mode Settings Interrupt Level Port I/O Address COM1 3F8~3FF IRQ4 COM2 2F8~2FF IRQ3 COM3 3E8~3EF IRQ4 COM4 2E8~2EF IRQ3 *1 *1 On the IBM PS/55Z and similar, COM3 uses IRQ3.
Hardware Setup Mounting Method There are many kinds of boards that can be mounted in a computer's extension slots, however the mounting method is identical for any slot. Before starting (1) Set the Power switch to OFF. (2) Unplug the power cable from the AC outlet. Mounting the board (1) Remove the screws from the rear of the computer. When removing screws, use a screwdriver that matches the screw heads. Cover mounting screws Cover mounting screws Figure 3.4.
Hardware Setup (3) Remove the screw retaining the cover of the slot where the board is to be mounted, and remove the cover from the rear panel. Figure 3.6. Expansion Slot Cover Caution! To prevent a discharge of static electricity from damaging the board, it is important to ground yourself. Hold the packaged board in one hand and touch an unpainted, grounded metal surface with the other hand. Then, hold the non-conductive part of the board and remove it from the bag.
Hardware Setup (7) Anchor the board with the screw. Use the screw set aside in step 3. Tighten so that the board is held in place. Figure 3.7. Anchoring the COM-2(PC)F (8) Replace the computer cover. (9) Connect the power cord.
Hardware Setup Connecting the External Devices Connecting the COM-2(PC)F board to external devices is via two 9-pin D-SUB connector (male) on the board. 5 9 CN1 1 5 6 9 CN2 1 6 On-board Connector : DELC-J9PAF-20L9 (Male) [mfd. by JAE] Application Connector : 17JE-13090-02 (D8C) (Female) [mfd. by DDK] Figure 3.8.
Hardware Setup Connecting the Cable The RS-232C interface requires that you use a different type of cable depending on the type of device being connected. For example, modem connections and computer (PC) connections require different cables. Accordingly, check the specifications of the external device to which you are connecting and select the appropriate type of cable. The two types of cable are "straightthrough" and "crossed".
System Reference 4. System Reference Specifications Table 4.1. Specifications Item Specification Number of Channels 2 Input Type RS-232C External connectors Two 9-pin D-SUB connector (Male) Transfer Method Asychronous serial transfer Baud Rate 50~115,200bps *1 5, 6, 7, 8 bits Data Length 1, 1.5, 2 stop bits *1 Parity heck Even, Odd, Non-parity *1 Controller Chip NS16550 or equivalent Distance 15m Max.
System Reference Circuitry Diagrams SN75188 TXD, RTS, DTR SN75189 RXD, CTS, DSR 15pF Figure 4.1. Circuitry Diagrams Block Diagram The following is a block diagram of the COM-2(PC)F interface board. IBM-PC/AT BUS Addr. Bus (A9~A3) AEN Addr.
Troubleshooting 5. Troubleshooting If you are having trouble with your board or program, answer the following questions to see if you can find the problem. QUESTIONS: STEPS TO TAKE Is the pilot light on? The system must be turned on and the power supply must be working. Check the main power switch and the power supply. Did the system boot up? If the board has been installed and the system did not boot, check the following: - Make sure the board has been inserted firmly. Pull it out and try to reboot.
Troubleshooting Does the sample program work? Check the following: - Signals are connected to the correct pins. - Pin connections on the I/O cables are secure. - Signals are present at the external connectors. - Try using the COM-2(PC)F board with other non-essential boards removed. Remove other boards one by one, checking the COM-2(PC)F for successful operation after each board is removed.
Troubleshooting 3. DOS Version. 4. Name of the CONTEC board that you are using. 5. Names of other boards in the computer. 6. I/O addresses for the CONTEC board and all other boards. 7. Interrupt levels for the CONTEC board and all other boards. 8. DMA channels for the CONTEC board and all other boards (if applicable). 9. The programming language that you are using (and the version number).
Troubleshooting 10. Different I/O addresses you have tried. 11. Are you using your own program or a CONTEC sample program. 12. List AUTOEXEC.BAT. 13. List CONFIG.SYS.
Appendix 6. Appendix A. Sample Programs (for MS-DOS) This section covers the sample programs that are supplied on the floppy disk included with this board. COM-2(PC)F Diskette CONTEC supplies a sample program diskette with each COM-2(PC)F board. This diskette contains sample programs to help you get started. Use the DOS DIR command to see a list of files on the COM-2(PC)F diskette. A> dir Backup Copy Make a backup of the COM-2(PC)F diskette before use.
Appendix Sample Programs The programs are written in GW-BASIC and Microsoft C. The sample programs transmit data entered from the keyboard and display received data on the screen. Table 6.1. lists the communications data format. The sample programs listed in Figure 6.1. are included on the floppy disk. Table 6.1. Data Format Parameter Data Format Data bits 8 bits Stop bits 2 bits Parity None BAS MSC COM2V (1) H103HD01.BAS Data transmission (Enhanced mode) (2) H103HD02.
Appendix Notes! - All the sample programs must be run on a PC operating under MS-DOS. - Sample programs 3, 4, 6, and 10 cannot be used on a PC that already has COM1 and COM2 ports. Similarly, sample programs 11 cannot be used on a PC that already has COM3 and COM4 ports. - As sample programs 8 and 9 use half-duplex mode, they can only be used with the COM-2PD(PC) board.
Appendix Switch and Jumper Settings Table 6.2. Switch and Jumper Settings of Sample Program 1, 2, and 5 Item Settings SW1 O F F 1 2 3 4 I/O Address (SW1) Interrupt Level (JP1, JP2, JP3) JP1 9 3 4 5 6 7 1 0 1112 1 4 1 5 NC JP2 9 3 4 5 6 7 1 0 1112 1 4 1 5 NC JP3 9 3 4 5 6 7 1 0 1112 1 4 1 5 NC Table 6.3.
Appendix Table 6.4. Switch and Jumper Settings of Sample Program 7 Item Settings SW1 O F F 1 2 3 4 I/O Address (SW1) Interrupt Level (JP1, JP2, JP3) JP1 9 3 4 5 6 7 1 0 111 2 14 15 N C JP2 9 3 4 5 6 7 1 0 111 2 14 15 N C JP3 9 3 4 5 6 7 1 0 111 2 14 15 N C Table 6.5.
Appendix Cable Connection When running the sample programs 1 to 11 (except 8 and 9), use the interconnection cable as shown in Figure 6.2. for connection with the mating device in the Compatible mode. For use in the Enhanced mode, on the other hand, use the cross cable or the interconnection configuration diagram in Figure 6.2. Signal Pin No. TXD 3 RXD 2 DTR 4 6 DSR SG 5 DCD 1 RTS CTS CH1 7 8 Pin No. 2 3 6 4 5 7 8 Signal RXD TXD DSR DTR SG RTS CTS 1 DCD External device or CH2 Figure 6.2.
Appendix Sample Program 1 This GW-BASIC sample program demonstrates the transmit-data capability of COM-2(PC)F in Enhanced mode. First, it initializes the Asynchronous Communication Element (ACE), then it transmits the data input from the keyboard to the external device through channel 1 (CN1).
Appendix Sample Program 2 This GW-BASIC sample program demonstrates the receive-data capability of COM-2(PC)F in Enhanced mode. First, it initializes the ACE, then it transmits the data input from the external device to CRT through CN1.
Appendix Sample Program 3 This GW-BASIC sample program demonstrates the transmit-data capability of COM-2(PC)F in Compatible mode. Using this [OPEN "COM1 : 9600, N, 8, 2, DS" AS #1] command opens the RS-232C communication file (COM1). It then writes the data input from the keyboard to COM1 through CN1. START Set Communication File None Key A$=INKEY$ In Key Data Transmission Figure 6.5.
Appendix Sample Program 4 This GW-BASIC sample program demonstrates the receive-data capability of COM-2(PC)F in Compatible mode. Using this [OPEN "COM1 : 9600, N, 8, 2, DS" AS #1] command opens the RS-232C communication file (COM1). It then reads the data from COM1 and outputs to CRT through CN1. START Set Communication File Yes File Buffer = 0 No Display File Buffer's Data On CRT Figure 6.6.
Appendix Sample Program 5 This GW-BASIC sample program demonstrates the receive/transmit-data capability of COM-2(PC)F in Enhanced mode. First, it initializes the ACE, it then receives the data input from the keyboard through CN1. Finally it outputs the data to CRT through CN2.
Appendix Sample Program 6 This GW-BASIC sample program demonstrates the receive/transmit-data capability of COM-2(PC)F in Compatible mode. Using the [OPEN "COM1 : 9600, N, 8, 2, DS" AS #1] command and the [OPEN "COM2 : 9600, N, 8, 2, DS" AS #2] command opens two RS-232C communication files (COM1 and COM2). The program sends the keyboard input data from COM1 to COM2 and displays the data received from COM2 to CRT.
Appendix Sample Program 7 This GW-BASIC sample program demonstrates the receive/transmit-data capability of COM-2(PC)F in Enhanced mode with interrupt input. It calls a machine language program to register and handle interrupt input. One channel's receive/transitdata routine is processed in the interrupt handler. The received data is stored in the data buffer. Data to be transmitted is read from the data buffer.
Appendix Sample Program 8 [Half-duplex data transmission (Enhanced mode)] The sample program 8 enables initialization on ACE, data transmission in the transmission mode, and waits for the receive data in the receive mode.
Appendix Sample Program 9 [Half-duplex data reception (Enhanced mode)] The sample program 9 enables initialization on ACE, receives 5-byte data; after transmission, the program enters the transmission mode for data transmission.
Appendix Sample Program 10 [Data transmission and reception (COM1, COM2 mode)] Sample program 10 uses the bios_serialcom( ) function for MS-C. It first receives the data transmitted from COM1, and then receives the data at COM1 transmitted from COM2. Received data is displayed on the CRT.
Appendix Sample Program 11 [Data transmission and reception (COM3, COM4 mode)] Sample program 11 uses the bios_serialcom( ) function for MS-C. It first receives the data transmitted from COM3, and then receives the data at COM3 transmitted from COM4. Received data is displayed on the CRT.
Appendix B. Notes on Developing Driver Software Internal Registers COM-2(PC)F uses the NS16550 (National Semiconductor) as the Asynchronous Communication Element (ACE). Within the address range of each channel, the offset addresses 0 through 7 furnish access to the internal registers of each of the two ACE's. Table 6.6. shows how functions relate to the internal registers. To access the baud rate generator (defined on the next page), the DLAB signal must be set high.
Appendix Baud Rate Selection The COM-2(PC)F board has one programmable baud rate generator for each of the two ACEs. The ACEs use a 1.8432MHz crystal oscillator as clock input. The baud rate generator takes the 1.8432MHz clock and divides it by a divisor from 1 to (216 - 1). The output frequency of the baud rate generator equals 16 times the baud rate.
Appendix LSI Recovery Time Due to the ever higher CPU clock rates used in PCs, restrictions apply when controlling a peripheral LSI device by software. Table 6.8. lists the LSIs used on CONTEC boards which require special consideration when accessing. Take note of the following point when accessing these LSIs. In PCs using i386 or earlier CPUs, software waits (JMP $+2) can be used to provide a recovery time when accessing the LSI.
Appendix Example program (for accessing an i8254 or equivalent) - Microsoft Macro Assembler OUT DX, AL IN AL, 2EFH ; ; Access to the i8254 Execute IN AL, 2EFH once to provide the recovery time - Microsoft C/C++ outp(port, byte); rt=inp(0x2ef); /* Access to the i8254 */ /* Execute rt=inp(0x2ef); once to provide the recovery time */ COM-2(PC)F 59
Appendix Various Aspects of Interrupt Handling in Enhanced Mode and Compatible Mode Enhanced Mode When in Enhanced mode, two channels of the COM-2(PC)F share the same interrupt request line. The interrupt levels can be set from IRQ3~IRQ7, IRQ9~IRQ12, IRQ14, and IRQ15 by setting JP1 before installing this board. Each channel's interrupt signal will be latched in the Interrupt Vector Register (IVR).
Appendix Output Port 2BF/1BF D7 D6 D5 D4 D3 D2 D1 D0 Not Used Global Interrupt 0: Disable 1: Enable Input Port 2BF/1BF D7 D6 D5 D4 D3 D2 D1 D0 Not Used CH1 Interrupt 0: Occurred 1: Not Occurred CH2 Interrupt 0: Occurred 1: Not Occurred Global Interrupt 0: Enable 1: Disable Figure 6.14. IVR Bit Function in Enhanced Mode Compatible Mode When in the Compatible mode, CN1 of the interface board is compatible with COM1 or COM3 and CN2 is compatible with COM2 or COM4.
Appendix C. The Details on NS16550 Table 6.9. NS16550's Register (Short from National Semiconductor's data book) <1/2> Register Bit No. 0 0 DLAB = 0 0 DLAB = 0 1 DLAB = 0 2 2 3 Receiver Transmitter Interrupt Interrupt FIFO Line Buffer Holding Enable Ident.
Appendix Table 6.9. NS16550's Register (Short from National Semiconductor's data book) <2/2> Register 4 5 6 7 0 DLAB = 1 1 DLAB =1 Bit MODEM Line MODEM Scratch Divisor Divisor No.
Appendix D. Difference Between the COM-2(PC)F and COM-2(PC)V The COM-2(PC)F is an upgrade of the previous COM-2(PC)V board and is upwardly compatible. Therefore, the board can generally be used in the same way as the COM-2(PC)V. However, as the bus specification has changed from the XT bus to the AT bus and the board sizes are different, the COM-2(PC)F may not fit in some PCs. Check the size of board that can be mounted in your PC before selecting the COM-2(PC)F.
Index 7.
Index W Warranty, 2 Windows 2000, 14 Windows 3.
A-41-606 LZU2821 021025 [961015]
CONTEC Group JAPAN : Headquarters CONTEC Co., LTD. 3-9-31, Himesato, Nishiyodogawa-ku, Osaka 555-0025, Japan Tel : +81 (6) 6477-5219 Fax : +81 (6) 6477-1692 E-mail : intsales@osaka.contec.co.jp U.S.A. : CONTEC MICROELECTRONICS U.S.A. INC. 744 South Hillview Drive, Milpitas, CA 95035 U.S.A. Tel : +1 (408) 719-8200 Fax : +1 (408) 719-6750 E-mail : tech_support@contecusa.com EUROPE : CONTEC MICROELECTRONICS EUROPE B.V.
