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Zmodem Rev 16.01 Copyright (c) 1989, 90, 91, 92, 93 By International TeleCommunications ALL RIGHTS RESERVED Table Of Contents i Limited Warranty .......................................... Page 1 Distribution Policy And Copyright ......................... Page 1 Copyright .............................................. Page 1 -- Test-Drive Distribution Policy -- ................... Page 2 Introduction .............................................. Page 2 Zmodem Command Line Switches .............................. Page 3 /S ..................................................... Page 3 -T<d,w,o> .............................................. Page 4 /R ..................................................... Page 6 /U ..................................................... Page 6 /F ..................................................... Page 6 @ ...................................................... Page 7 /K ..................................................... Page 7 /N ..................................................... Page 8 /P ..................................................... Page 8 /V ..................................................... Page 8 /B ..................................................... Page 8 /L ..................................................... Page 9 Environment Lock Variable ........................... Page 9 Required Switches ......................................... Page 9 Your Receive Batch File ................................ Page 10 Send Batch File ........................................ Page 10 Error Levels .............................................. Page 10 Bbs/Terminal Programs ..................................... Page 10 Serial Drivers And Multi-Port Cards ....................... Page 11 Intelligent Multi-Port Stargate ........................ Page 11 Intelligent Multi-Port Arnet ........................... Page 12 Intelligent Multi-Port Digiboard ....................... Page 12 Fossil ................................................. Page 13 Non-Intelligent Serial Cards ........................... Page 13 Non-Intelligent Digiboards ............................. Page 13 Setting Up The Digi Pc/4 Board ..................... Page 14 Setting The Jumpers .............................. Page 14 Multi-Board Connectors ........................... Page 15 Dip Switches ..................................... Page 15 Setting Up A Digiboard Pc/8 ......................... Page 16 Setting The Jumpers .............................. Page 16 Multi-Board Connectors ........................... Page 17 Dip Switches ..................................... Page 17 Setting Up The Digiboard Pc/16 ...................... Page 18 Non-Intelligent Stargate ............................... Page 20 Non-Intelligent Ast .................................... Page 20 Non-Intelligent Boca ................................... Page 21 8259 Interrupt Management ................................. Page 21 Zmodem License ............................................ Page 22 Zmodem Technical Reference Manual Page 1 Limited Warranty This products provided "as is" without warranty of any kind. The entire risk as to the results and performance of the program is assumed by you. Should the program prove defective, you (and not International TeleCommunications ) assume the entire cost of all necessary servicing, repair or correction. Further, International TeleCommunications does not warrant, guarantee, or make representations regarding the use of, or the results of the use of this program in terms of correctness, accuracy, reliability, currentness, or otherwise; and you rely on the program and its results solely at your own risk. International TeleCommunications cannot accept responsibility for system damage, loss of profit, or any other special, incidental, or consequential damage resulting from the use or inability to use this product. International TeleCommunications DOES warrant to the original licensee of a REGISTERED product that the program disk(s) on which the program is recorded be free from defects in materials and workmanship under normal use and service for a period of ninety (90) days from the date of delivery as evidenced by a copy of your receipt. International TeleCommunications' entire liability and your exclusive remedy shall be replacement of the disk not meeting International TeleCommunications Limited Warranty. Distribution Policy And Copyright Copyright Despite the method of marketing, Zmodem is not in the public domain. It is the proprietary property of International TeleCommunications. All rights are reserved. Copying, duplicating, selling or otherwise distributing this product except as expressly permitted in the TEST-DRIVE Distribution Policy below is a violation of the Law. However, we grant you the right, in fact encourage you to make and distribute as many copies of this TEST-DRIVE version as you wish, using any acceptable medium of exchange, with the following provisions: Zmodem Technical Reference Manual Page 2 -- Test-Drive Distribution Policy -- 1. Please feel free to distribute this TEST-DRIVE version as often as you like, to any interested parties. 2. Please do not distribute the program without all of its original related files, addendum files, and documentation. 3. Please obtain our written permission prior to distribution with any "Bundled" software packages. 4. Please do not accept payment for the program; a copying fee of $10.00 per diskette may be charged when distributed by a non-profit user-group. 5. Please do not alter the program or documentation in any manner. 6. NOTE - Individuals, groups, vendors, or other software distribution companies which market diskettes containing the TEST-DRIVE programs for profit must obtain written permission from International TeleCommunications prior to distribution. Introduction Zmodem.exe is a full function stand alone Zmodem protocol driver. Zmodem.exe offers exceptional fast Zmodem file transfers and it fully supports ZSKIP, Resume interrupted Transfers, 32 and 16 bit CRC error detection, 8259 interrupt management, and a wide range of intelligent and non-intelligent serial cards (also support Fossil and has an internal driver). Zmodem.exe is one of the fastest (we've been told) Zmodem drivers you are likely to find. It is the only stand alone zmodem driver that offers support for such a WIDE range of serial card as well as 8259 interrupt managment (faster transfers). Zmodem Technical Reference Manual Page 3 Zmodem Command Line Switches Each switch must be preceded by either a forward slash '/' or a dash '-'. O Should Always Be Used With Osiris BBS. V Engage ANTI-PMS Screen, For Use With Osiris BBS Only. S Use RTS flow control. K Keep Aborted Transfers. @ Use Send Control File. U Place Uploads In This Directory. R Receive Files N Osiris Node Number, Osiris BBS Only. L Lock Serial Rate. B Connect Baud Rate. P Serial Port. F Send These Files. T Time Slicing. /S 9600 bps and higher Slow Computer If you have a high speed modem you MUST have a 16550 Uart. Attempting to run at high speeds without one will result in errors. You might sneak by without a 16550 if you have a fast 386, or 486. A good way to check is by watching your transfers. If you are under an error correcting connect, then you should almost NEVER get an error reported by ANY transfer protocol. Getting errors reported (by ANY transfer protocol) while under MNP or ARQ can only mean. 1. The protocol goofed (Zmodem doesn't goof). 2. You may have another application interfering with serial interrupts. 3. You have hardware problems. 4. You do not have a 16550 Uart. If you have a 16550 installed, then you can rule out number four and that leaves you with two or three. If you have a multi-tasker or a network and a 16550 then the network and/or multi-tasker is stealing to much time and the 16550 fifo's are being over run. Zmodem Technical Reference Manual Page 4 If you have a 16550 and NOTHING else that may interfere with the serial interrupts, then you more than likely have hardware problems. If it is option 4, buy one and install it. 16550 uarts cost about $20.00 and are WELL worth it. Unless you have hardware problems, I can HELP you by kicking in RTS flow control. This does slow down transfers, but it is better to slow them DOWN than experience errors. If you have to, add /S to the command line. But only use it if you HAVE to and only until you fix the CAUSE of the problem. -T<d,w,o> This governs the TYPE of time slicing the protocol driver will use. Leaving off the -T switch means no time slicing. D= Desqview or Topview W= Windows O= OS-2 E.g. -TD, -TW, -TO While time slicing does reduce the drain on your CPU it may, depending on the multitasker (OS-2, Windows, Topview, or Desqview) and your hardware, greatly reduce transfer rates. Despite the term "Multitasking", multitasking is impossible using a single CPU. The CPU can only process a single instruction (2 integer instructions if the new Intel P5 chip is used) at once. Multitasking with a single CPU is nothing more than quickly swapping in and out programs giving each a short period of time to run before swapping in another one. For instances, when Windows swaps away it freezes everything in that windows and this includes ANY device drivers or interrupt service routines. If you use the internal serial driver, it to is frozen and cannot send data that may be in the transmit buffer. Zmodem Technical Reference Manual Page 5 While all multitaskers do this, some are more efficient than others. Some will give interrupt services higher priority than other tasks and allow them to use much more CPU time. Even if the application only gets access to the CPU once ever oh . . . 9 clock tics, interrupt routines used by that application may get access to the CPU every 2 clock tics. This is sometimes referred to as multi-threading. There are conditions when it doesn't matter how the multitasker works. For instances, intelligent serial cards. If you have an intelligent serial card, it handles sending the data and the multitasker does not stop it from doing so by swapping out the window. In this case, always use Time slicing. Fossil drivers can sometimes get around this if they are loaded BEFORE the multitasker. However, some multitaskers will not allow dual access, from different windows, to the fossil. To determine if your system works better with or without time slicing, testing is the only way. Do uploads and downloads using time slicing and without using time slicing. If you run a single node, compare the transfer rates. If you run multiple nodes, it gets more involved. After getting the first set of figures, repeat the entire process but make sure you have someone doing the uploads and downloads on ALL nodes at once. THEN compare ALL the transfer rates. Doing multiple transfers at once DOES effect the outcome. You may find that while transfer rates drop drastically with a single transfer, they may actually go up when you have multiple transfers going at once. When you are doing the tests, keep in mind that transfer rates WILL vary, but only a little bit. Look for the big differences and don't worry about 1 to 3 percent. Zmodem Technical Reference Manual Page 6 /R Receive Files When I encounter this switch, I will go directly to receive files mode. You MUST make sure that /R is the very last switch used. If it is not, then you will be missing important command line switches. /U Place inbound files in this directory You can direct Zmodem to place inbound files in a specific directory by using the /U command. I will verify the directory you specified, so make sure it is a VALID directory. You cannot use Drive designators or ROOT directories with the /U switch. For instance, /UC: or /UC:\. C: and C:\ aren't listed in the FAT and I cannot validate them. Make sure you do NOT use a trailing backslash with the /U path, I'll ADD a backslash when I concate the file name with the path you specified. E.g., d:\uploads\ is NOT valid, it should be d:\uploads Here is a sample of a GOOD /U setting: /UC:\TELIX\UPLOADS /F Send These Files When I find the /F, I will immediately begin sending. YOU should make sure that you have listed ALL the OTHER commands before using /F. Make sure you place ONE blank space between the /F switch and the first filename. Place one blank space between ADDITIONAL files names, if you have specified more than one. You may include a drive and path with the file names. Zmodem Technical Reference Manual Page 7 E.g., c:\uploads\file1.exe is a valid file name. You can use the DOS wild card characters '?' and '*'. I will expand those characters to match any file in that directory. I do not place limits on the number of files that can FOLLOW /F, but DOS DOES! DOS restricts the number of characters you can place on a command line to 128. DOS also limits you to nine batch parameter symbols, %1 through %9. @ I'll assume USE this file as a "SEND" control file. e.g. -@D:\OSIRIS\SEND2.CTL Since DOS forces me to work with 128 and nine batch variables, using @ to send file names is the preferred method of passing the names. The information following @ is the full drive, path, and file name of a TEXT file. I do not place restrictions on the number of files that you can have listed and you can include the full drive, path, along with name of the file. You can include DOS wild card characters, '?' and '*'. E.g., C:\PCboard\Tlx310a.exe is valid. E.g., C:\Telix\*.arj is valid. Each line in the file must contain only ONE filename and has to end with the DOS CR/LF sequence. Sample Send Control File: C:\DRIVERS\MPT110.ZIP C:\DRIVERS\TMOD610.ARJ C:\DRIVERS\ZMOD*.* /K Keep Aborted Transfers If you drop carrier or time out, I will delete the aborted file. Zmodem Technical Reference Manual Page 8 If you're using Zmodem with a TERMINAL program, then you will WANT to keep the file. Adding /K to your Zmodem command line tells ME you want to keep aborted transfers. /N Node Number If you're running OSIRIS, you can include /Nx on the command line. E.g., /N1 /N2 /N3 . . . /N255 Add /N*N to your protocol command lines. I'll display the callers name, city, and state at the bottom of the screen, useful when you walk into the room and WONDER who is currently downloading what. /P Com Port You have to tell me which serial port your caller is ON by including /Px on the command line. E.g., /P1 /P2 /P3 . . . /P8 /V Engage PMS Screening This can ONLY be used on an OSIRIS system. This tells me to allow Osiris to monitor the serial port with its ANTI-PMS screening system. /B Connect Baud Rate You have to provide the TRUE CONNECT RATE, most of the time this is the same as your SERIAL baud rate. e.g. /B1200 /B2400 /B9600 If you have a high speed modem with a FIXED serial rate, the CONNECT rate may not always be the same, but that doesn't change anything. You still should pass the TRUE connect rate and not the SERIAL rate. Zmodem Technical Reference Manual Page 9 /L Lock Rate This tells me you have a LOCKED Serial Port. E.g. /L38400 /L57600 /L19200 Environment Lock Variable You can define an environment variable called COMx=BaudRate. Replace x with the serial port number and BaudRate with the LOCKED baud rate. e.g. COM1=19200 Do NOT add blank spaces or comma's. Make sure you use Upper Case. You can do that in the AUTOEXEC.BAT file or in the BATCH file you use to CALL Zmodem. e.g. cls SET COM2=38400 Zmodem -B%1 -P%2 -R Exit Required Switches Each Zmodem installation will require TWO switches. It does not matter what type of BBS/Terminal program you're going to use. It does not matter if it is SEND or RECEIVE. /Bxxxxx and /Px You should replace xxxxx in the /B with the correct CONNECT rate or 0. Replace the x in /P with the correct COM port. /B9600 /P2 (Connect Rate 9600, COM 2) /B2400 /P1 (Connect Rate 2400, COM 1) It is not important WHERE you place the switches, as long as they are NOT the LAST switch used. Zmodem Technical Reference Manual Page 10 Your Receive Batch File Your Receive Batch file will require only one additional switch, /R. It MUST be the very last switch on the command line. The MINIMUM command line for receiving would be: Zmodem /B2400 /P1 /R 2400 and 1 can be supplied by DOS batch variables, e.g. Zmodem /B%1 /P%2 /R Other optional switches, /U . . . /K etc., must be included BEFORE the /R switch. Send Batch File Your "SEND" batch file only "requires" ONE additional switch, /F or -@. The MINIMUM command line for sending a file: /B2400 /P2 /F FILENAME#1 FILENAME#2 FILENAME#3 or /B2400 /P2 -@CTRL_NAME 2400, 2, FILENAME#1, FILENAME#2, FILENAME#3, etc. may be supplied by DOS batch variables. E.g., Zmodem /B%1 /P%2 /F %3 %4 %5 %6 %7 %8 %9 Error Levels I will exit, following the transfer, with an error level of 0 or 1. Zero, 0, indicates a successful transfer and one, 1, indicates an error. Bbs/Terminal Programs I use a very basic command line setup which should allow Zmodem to be used by almost any program. I do NOT expect that it will work with EVERYTHING. If you are using something that it will just flat not work with then send it to me. You can upload it or mail it and I will attempt to find out why. Zmodem Technical Reference Manual Page 11 Serial Drivers And Multi-Port Cards Zmodem supports Intelligent multi-port serial cards, non- intelligent multi-port serial cards, fossils, and has an internal serial driver (fastest method of dealing with the serial port). Zmodem defaults to the internal high speed driver, but you can change the driver type by using the use the environment variable COMDRV, ONLY AVAILABLE IN REGISTERED VERSION. COMDRV=FOSSIL {Intelligent Serial Cards} COMDRV=STARGATE COMDRV=DIGI COMDRV=ARNET {Non-Intelligent Serial Cards} COMDRV=NDIGI COMDRV=NSTARGATE COMDRV=AST COMDRV=BOCA Intelligent Multi-Port Stargate Load the Star Gate device driver, ACL.SYS, in your config.sys. When your system boots, run ACLDL to download your code. Zmodem defaults to the 16 port with the I/O address of 0x200 at D000:000 starting at COM 5. If your hardware doesn't match this, you'll need to create a SERIAL.CFG control file in SAME directory that houses Zmodem.Exe or re-configure your stargate board. SERIAL.CFG for STARGATE Intelligent Multi-port Cards: The first line of this file should contain 5 settings, separated by a single space. BOARD BOARD_SEGMENT PORT FIRST_PORT_NUMBER NUMBER_OF_PORTS Board: Stargate board to use (0 - 3). This tells us which board you want to use. Board_segment: Segment of the Star Gate board's memory window. Zmodem Technical Reference Manual Page 12 Port: The Address of the board's I/O latch. First_port_number: Name given to the first port on the board (1,2,3,etc). The designation of the port number for the first port on the board is arbitrary. Number_of_ports: Number of ports on the board. Example: {SERIAL.CFG} 0 0xd000 0x300 4 8 Intelligent Multi-Port Arnet When you load the Arnet device driver, port number assignments are printed on the display. These are the number you'd use for the zmodem serial port parameter. Use the /N5 switch on ASP.SYS. If you do not use this switch, attempts to set handshaking will result in an error. The files, box.bin and fastbios.bin, supplied with the Arnet boards, must be in your root directory for this to work properly. These files are used by ASP.SYS at boot time. Intelligent Multi-Port Digiboard Run the Digiboard config. program (XIDOSCFG.EXE) which asks you for the desired port numbers. Also, install the device driver supplied with the board. You must also complete the following steps: 1. Set up the board NOT to use interrupts. 2. Setup to support INT 0x14 for most drivers and EBIOS for the XIDOS5 driver. 3. Change the configuration to enable ports, if your driver requires it. Make sure "NONE" is the selected handshaking for ports. 4. Reboot your system. During the boot, the driver should respond with the message "successfully initialized board". Zmodem Technical Reference Manual Page 13 Fossil Any fossil driver will work. See documentation that comes with the fossil driver for details. Non-Intelligent Serial Cards Non-Intelligent boards frequently come with device driver software. This software provides INT 14H access to the UART on the board. Do N O T use this software with Zmodem. Zmodem accesses the hardware directly without the use of any external drivers. Non-Intelligent Digiboards (COMDRV=NDIGI) The Digiboard DigiCHANNEL PC/16, PC/8, and PC/4 are multi-channel communications boards that provide a serial communications subset for IBM and compatible computers. Each of the boards supports full modem control on each port. Up to two DigiCHANNEL PC/16, 4 PC/4 or PC/8 boards can be installed on a single computer providing up to 32 additional ports. To insure connection flexibility, 3 options are available: 1. An I/O mate connection box with external connections. 2. An octopus cable with four or eight DB25 connectors. 3. An RJ45 connection box with eight RJ45 or RJ11 connectors. The DIGI PC/4 and PC/8 addressing and interrupt selection are flexibly and not limited to preset IRQs, address, or address ranges. The user may set DIP switches to select different status registers (DS1) and I/O port addresses (DS2 - DS9), as well as setting jumpers to select either one or two interrupts. The DIGI PC/16 offers hardware jumpers for selecting an interrupt and a PAL with preset I/O port and status register addresses. There are six possible system interrupts that may be selected for the DIGI PC/X board: IRQ2 - IRQ7. However, IRQ3 and IRQ4 are commonly reserved for standard COM1 and COM2 serial hardware. Zmodem Technical Reference Manual Page 14 If multiple boards are installed in one system, each board is given a unique I.D. such as board 0 and board 1 by setting the board ID jumpers. The status register and IRQ of ALL boards can be set to the same values, and the boards are daisy changed with special cables that pass signals from the interrupt sequence. When daisy chained, the boards are treated like one board. The boards can also be setup independently on different interrupts. Setting Up The Digi Pc/4 Board The COM/4 board has 4 serial interface ports, individual address and interrupt settings, and two 8 bit status ports. It is preset and tested at the factory at IRQ3; address 100, 108, 110, and 118; status port ON, and set to address 140. Check your system for any peripherals that may use either the preset interrupt or addresses. If there is no conflict, you can install the COM/4 board without modifications. However, if you need to change settings, details are provided below. Setting The Jumpers Jumpers 1-4 are used to choose the interrupt for each individual port. For odd interrupts IRQ3, IRQ5, or IRQ7 set the shunt between pins 1 and 2 for the corresponding jumper. For even interrupts IRQ2, IRQ4, or IRQ6 set the shunt between pins 2 and 3 for the corresponding jumper. Ports 1 through 4 map with jumpers 1-4 respectively. J9 and J10 are used to set the board ID number. The setting will depend upon which board it represents. If more than one board is used in the system, each board must be set to a unique identification number. The first board should always be set to 0. If you have daisy changed more than one board, you will use the board #s 1-3. The settings are as follows: Zmodem Technical Reference Manual Page 15 Board # J9 J10 ------------------------------------------------------------ 0 between pins 2 and 3 between pins 1 and 2 1 between pins 2 and 3 between pins 1 and 2 2 between pins 1 and 2 between pins 2 and 3 3 between pins 1 and 2 between pins 1 and 2 J85 through J90 are used to select which interrupt the board will use. Set these jumpers as follows: IRQ# Jumper# --------------------------- 2 J90 3 J85 4 J89 5 J86 6 J88 7 J87 Multi-Board Connectors P2 and P3 are jumpers used to daisy chain two boards together using a special DigiBoard cable. If you are only using one board, place a shunt on pins 2 and 3 of both of these jumpers. This is VERY important. Without this shunt, no interrupts will be received. Dip Switches Address line A3 through A9 determine the port address and are logic-selected on the DIP switches for each port for switches DS3 through DS5. The DIP switches for each port can be set to any NON-CONFLICTING address in the I/O map from 0000H to 03FFH. Switch positions 1-7 switch set the address of each port. Position 1 corresponds to A9, 2=A8, 3=A7, 4=A6, 5=A5, 6=A4, 7=A3. Position 8 of each switch enables or disables the port. We recommend assigning consecutive port numbers for easy of use. The following table lists suggested address and switch settings for the DigiBoard DigiCHANNEL PC/4 board: Zmodem Technical Reference Manual Page 16 Port# Base Dip Switch Settings Address Switch 1 2 3 4 5 6 7 8 ---------------------------------------------------------------- Status 140H DS1 ON OFF ON OFF ON ON ON ON port ---------------------------------------------------------------- 1 100H DS2 ON OFF ON ON ON ON ON ON 2 108H DS3 ON OFF ON ON ON ON OFF ON 3 110H DS4 ON OFF ON ON ON OFF ON ON 4 118H DS5 ON OFF ON ON ON OFF OFF ON Position (Switch setting 8) enables or disables the port where ON = enabled. Setting Up A Digiboard Pc/8 The PC/8 board has eight individual ports, individual address and interrupt settings and two 8 bit status ports. The PC/8 board is preset and tested at the factory using IRQ3; address 100, 108,110, 118, 120, 128, 130, and 138; status port ON and set to address 140. Setting The Jumpers Jumpers J1-J8 are used to choose the interrupt for each port. For odd interrupt numbers including IRQ3, IRQ5, or IRQ7, set the shunt between pin 1 and 2 for the corresponding jumper. For even interrupts, set the shunt between pins 2 and 3. All ports HAVE to use the same interrupt to work properly. Ports 1 through 8 map to jumpers 1-8 respectively. J9 and J10 are used to set the board ID number. The setting will depend upon which board it represents. If more than one board is used in the system, each board must be set to a unique identification number. The first board should always be set to 0. If you have daisy changed more than one board, you will use the board #s 1-3. The settings are as follows: Zmodem Technical Reference Manual Page 17 Board # J9 J10 ------------------------------------------------------------ 0 between pins 2 and 3 between pins 1 and 2 1 between pins 2 and 3 between pins 1 and 2 2 between pins 1 and 2 between pins 2 and 3 3 between pins 1 and 2 between pins 1 and 2 J85 through J90 are used to select which interrupt the board will use. Set these jumpers as follows: IRQ# Jumper# --------------------------- 2 J90 3 J85 4 J89 5 J86 6 J88 7 J87 Multi-Board Connectors P2 and P3 are jumpers used to daisy chain two boards together using a special DigiBoard cable. If you are only using one board, place a shunt on pins 2 and 3 of both of these jumpers. This is VERY important. Without this shunt, no interrupts will be received. Dip Switches Address line A3 through A9 determine the port address and are logic-selected on the DIP switches for each port for switches DS3 through DS5. The DIP switches for each port can be set to any NON-CONFLICTING address in the I/O map from 0000H to 03FFH. Switch positions 1-7 switch set the address of each port. Position 1 corresponds to A9, 2=A8, 3=A7, 4=A6, 5=A5, 6=A4, 7=A3. Position 8 of each switch enables or disables the port. We recommend assigning consecutive port numbers for easy of use. The following table lists suggested address and switch settings for the DigiBoard DigiCHANNEL PC/8 board: Zmodem Technical Reference Manual Page 18 Port# Base Dip Switch Settings Address Switch 1 2 3 4 5 6 7 8 ---------------------------------------------------------------- Status 140H DS1 ON OFF ON OFF ON ON ON ON port ---------------------------------------------------------------- 1 100H DS2 ON OFF ON ON ON ON ON ON 2 108H DS3 ON OFF ON ON ON ON OFF ON 3 110H DS4 ON OFF ON ON ON OFF ON ON 4 118H DS5 ON OFF ON ON ON OFF OFF ON 5 120H DS6 ON OFF ON ON OFF ON ON ON 6 128H DS7 ON OFF ON ON OFF ON OFF ON 7 130H DS8 ON OFF ON ON OFF OFF ON ON 8 138H DS9 ON OFF ON ON OFF OFF OFF ON Position (Switch setting 8) enables or disables the port where ON = enabled. Setting Up The Digiboard Pc/16 This board is, in most respects, the functional equivalent of two DigiChannel PC/8 boards operating together. The PC/16 features the same method of interrupt sequencing in hardware, sparing the CPU from having to POLL the individual ports. While the PC/8 has several DIP switches and jumpers to set, the PC/16 has all addresses set in the hardware. Default values are set at IRQ3, UART base address = 100h, and status register = 140H. To install the board, set the jumpers including the board selection jumper and the IRQ selection jumper. Check other peripherals for conflicts with the pre- set addresses. If a conflict occurs, you will HAVE to change the I/O port on the OTHER device. Connector Jumper P3 is used to daisy chain two boards together using a special Digiboard cable. If you are only using one board, place a shunt on this jumper. It is located in the upper right-hand corner of the board. Interrupt Jumper J1 through J6 are used to select which interrupt the board will use. Set the jumpers as follows Zmodem Technical Reference Manual Page 19 IRQ# Set the shunt at Jumper # ---------------------------------------- 2 J1 3 J2 4 J3 5 J4 6 J5 7 J6 Set the BOARD I.D. Jumper J7 is used to number the board if you have more than one cascaded. For Board #0 set the shunt between pins 2 and 3. For Board #1 set the shunt between pints 1 and 2. Telling Zmodem about the non-intelligent digiboard board requires you to create a SERIAL.CFG file in the same directory that houses Zmodem.exe. The first line of this file contains four fields, separated by a single space. <IRQ> <Shared_port_status> <First_Port_Number> <Port_Count> <IRQ> The IRQ line used by this board 3-7. <Shared_port_status> Address of the status port (in HEX). <First_Port_Number> Number of the first port. This is an arbitrary port number. <Port_Count> Total number of ports on the board. Be sure to put the correct total number of ports and NOT just the number of ports you'll be USING. E.g. 4, 8, 16, or 32. The Second line should contain the PORT ADDRESSES, separated by a single space, for each port on the card (In HEX). If you defined Port_Count as 4, then you would have FOUR fields on this line. If you defined port count as 16 then Sixteen fields. Example, four port digiboard with default settings using COM5 as the first port number. {SERIAL.CFG} 3 0x140 5 4 0x100 0x108 0x110 0x118 Zmodem Technical Reference Manual Page 20 Non-Intelligent Stargate (COMDRV=NSTARGATE) Telling Zmodem about the non-intelligent Star Gate board requires you to create a SERIAL.CFG file in the same directory that houses Zmodem.exe. Serial.cfg contains a single line with 3 fields, separated by a single space. IRQ FIRST_PORT_NUMBER FIRST_PORT_ADDRESS IRQ The IRQ line used by this board (2-7). FIRST_PORT_NUMBER Number of the first port. This is an arbitrary port number. FIRST_PORT_ADDRESS Address (In HEX) of the first UART on the board. Example: {SERIAL.CFG} 3 5 0x180 Non-Intelligent Ast (COMDRV=AST) Telling Zmodem about the non-intelligent AST board requires you to create a SERIAL.CFG file in the same directory that houses Zmodem.exe. Serial.cfg contains a single line with 3 fields, separated by a single space. IRQ FIRST_PORT_NUMBER FIRST_PORT_ADDRESS IRQ The IRQ line used by this board (2-7). FIRST_PORT_NUMBER Number of the first port. This is an arbitrary port number. FIRST_PORT_ADDRESS Address (In HEX) of the first UART on the board. Example: {SERIAL.CFG} 3 5 0x1a0 Zmodem Technical Reference Manual Page 21 Non-Intelligent Boca (COMDRV=BOCA) Telling Zmodem about the non-intelligent BOCA board requires you to create a SERIAL.CFG file in the same directory that houses Zmodem.exe. Serial.cfg contains a single line with 4 fields, separated by a single space. IRQ FIRST_PORT_NUMBER PORT_COUNT FIRST_PORT_ADDRESS IRQ The IRQ line used by this board (2-7). FIRST_PORT_NUMBER Number of the first port. This is an arbitrary port number. PORT_COUNT Total number of ports on the board (4 or 8). FIRST_PORT_ADDRESS Address (In HEX) of the first UART on the board. Example: {SERIAL.CFG} 3 5 4 0x180 8259 Interrupt Management The interrupt manager automatically assigns priority to each of the systems interrupts. The timer counter, keyboard, and cascaded interrupt all have higher priority than the UART. To gain the MAXIMUM throughput (especially when multi- tasking), we suggest that you allow Zmodem to alter the IRQ manager so the UART has the highest priority. You can do this using the environment variable 8259=IRQ{1-7} Examples: 8259=IRQ4 8259=IRQ3 Keep in mind that only ONE of the uarts (in a multi-uart environment) can be switched to the HIGHEST priority, select the one that contains the fastest modem. Intelligent Multi-port cards use a single shared IRQ. This is the one you want to give highest priority to. Zmodem Technical Reference Manual Page 22 Zmodem License Please Read Carefully WHEN you register Zmodem, you indicate your acceptance of these terms. 1. License Grant. International TeleCommunications will grant you a non-exclusive license to use one copy of Zmodem on a single computer or on a single terminal connect to a single computer. Neither concurrent use on two or more computers nor use in a local area network is authorized without advanced written consent of International TeleCommunications and the payment of additional license fees. 2. International TeleCommunications' Rights. You acknowledge and agree that Zmodem is a proprietary product of International TeleCommunications, protected under U.S copyright law, international treaty provisions, and trade secret laws of general applicability. You further acknowledge and agree that all rights, title, and interest in and to Zmodem are and shall remain with International TeleCommunications. 3. Other Restrictions. You may not lease or rent Zmodem. You may not disassemble, decompile, or reverse engineer Zmodem. 4. Zmodem is licensed "AS IS," and International TeleCommunications disclaims any and all warranties, whether express or implied, including (without limitation) any implied warranties of merchantablity or fitness for a particular purpose. 5. Limitation of Liability. International TeleCommunications' cumulative liability to you or any other party for any loss or damage resulting from any claims, demands, or actions arising out of or relating to this agreement shall not exceed the license fee paid to International TeleCommunications for the use of Zmodem. In no event shall International TeleCommunications be liable for any indirect, incidental, consequential, special, or exemplary damages or lost profits, even if International TeleCommunications has been advised of the possibility of such damages. Some states do not allow the limitation or exclusion of liability for incidental or consequential damages, so the above limitation or exclusion may not apply to you. 6. Governing Law. This license agreement shall be construed and governed in accordance with the laws of the State of Missouri. Zmodem Technical Reference Manual Page 23 7. Severability. Shall any term of this license agreement be declared void or unenforceable by any court of competent jurisdiction, such declaration shall have no effect on the remaining terms hereof.