Commodore modem 1200 User Manual
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Commodore modem 1200 User Manual

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Model 1670

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Summary of Contents for Commodore modem 1200

  • Page 1 COMMODORE > o USER’S m flflU flL Model 1670...
  • Page 3 MODEM/1200 USER’S MANUAL For Your Commodore 128™ Commodore 128D™ Commodore 64® Commodore SX 64™...
  • Page 4 Commodore Electronics Limited. This software product is copyrighted and all rights reserved by Commodore Electronics Limited. The distribution and sale of this product are intended for the use of the original purchaser only. Law­ ful users of this program are hereby licensed only to read the pro­...

  • Page 5: Table Of Contents

    CONTENTS Section 1 Introduction..................1 What a Modem Does..............1 What Comes with Your Modem............2 How to Use This Manual..............3 Section 2 ConnectingYourModem/1200 ............5 Installation Instructions.............. 5 Section 3 Terminal Mode.................. 7 Hayes Com m ands............... 7 Command S um m ary..............8 Sample S ession................12 Setting R egisters.................
  • Page 6 Screen Editor................29 Printer F u n ctio n s..............29 Disk F u n ctio n s................ 31 Disk Wedge Commands............32 FileTransferProtocols............34 Other F u n ctio n s..............35 Reference..................36 Command In d e x..............36 Command Reference..............

  • Page 7: Introduction

    Your Commodore Modem/1200 gives you direct access to the wide range of information available on many information services, both national and local. You can play games against distant opponents, obtain the latest stock quotes and news, check airline schedules, send and receive mail electronically—and much, much more.

  • Page 8: What Comes With Your Modem

    Common Sense program. A VT52 Emulatorforthe Commodore64 and 128, and aVT100 Emulatorfor use in the 80-column mode of the Commodore 128 are also pro­ vided; instructions for using these programs are found in Section 5.

  • Page 9: How To Use This Manual

    Commodore computer. Section 3, Hayes® Commands, gives detailed descriptions of the commands used to control the Modem 1200.You need to be familiar with the dialing commands described in this chapter in order to use any terminal software programs whether they are provided with your modem or purchased separately.
  • Page 10 A glossary provides definitions for terms used in this manual. Index There are many terminal software programs available that will func­ tion with your Modem/1200. You need to be familiarwith the dialing commands described in Section 3 in order to use any software, whether provided with your modem or purchased separately.

  • Page 11: Connectingyourmodem/1200

    Modem/1200. You can connect the Modem/1200 to a Commodore computer sys­ tem with a monitor or a television set. The instructions are the same, because the only equipment directly involved in the installa­...
  • Page 12 (see Figure 2-1). Insert the modem firmly, but do not force it in, as this can damage the connectors. Figure 2-1: Modem connected to Commodore 128 computer and a telephone. See Section 7, Troubleshooting if you have trouble connecting or...

  • Page 13: Terminal Mode

    Terminal Mode Terminal mode is the mode of operation in which telecommunication takes place. Terminal software programs, such as Common Sense, perform various functions in terminal mode—such as downloading a file from an information service or controlling the memory buffer. The specific commands that execute those functions vary from program to program.

  • Page 14: Command Summary

    Those exceptions are also noted in the descriptions of the com­ mands in Table 3-1. Table 3-1 Command Summary NOTE: All commands are sent to the modem as ASCII characters (see Glossary). Also remember that, except where noted, all com­ mands are preceded by an AT and followed by an ASCII carriage return (RETURN key).
  • Page 15 Table 3-1, con’t Command Function used when more than one modem Transmitter Carrier; is connected to the same phone line. C1 (default) turns it ON for normal operation with one modem. CO turns it OFF for setting a RECEIVE ONLY condition of an additional device sharing the phone line.
  • Page 16 Table 3-1, con’t Command Function Echo; used only in command mode. When ON (E1, the default), the characters you type appear on (echo to) the screen. When OFF (EO), characters don’t appear on the screen, but commands are executed anyway. Duplex;...
  • Page 17 Table 3-1, con’t Function Command Setregisters; sets the 14 registers that control various elements of telecommunication. Table 3-2 lists the registers and their functions. Query register; Tells you the current value of register r. Result codes; status reports that are displayed on the screen in numeric or verbal (words) form (see the V command).

  • Page 18: Sample S Ession

    Table 3-1, con’t Command Function Verbal; determines whether result codes are displayed as words (V I, the default) or code numbers (VO). Zap; resets modem to all default settings. Has the same effect as unplugging, then plugging it in again. Can be used to initiate new dip switch settings.

  • Page 19: Setting R Egisters

    If connection is not successful, Type: A/ Re-executes the previous command. It does not require the AT prefix. Once you receive a CONNECT response, you can begin to navigate the information service. These are all different, but when you sub­ scribe to a service you are provided with enough information to get you started.
  • Page 20 Table 3-2 Register Settings (cont.) Register Default Function__________________________ Redefines the ASCII code for the escape code character. Redefines the ASCII code for Carriage Return. Redefines the ASCII code for Line Feed. Redefines the ASCII code for Backspace. NOTE: When you use a backspace to de­ lete a character from a command, the character remains on the screen but will not be transmitted.

  • Page 21: Using Thecommon Senseterminal Program

    Terminal Program Common Sense is a general purpose terminal program for your Modem/1200. The program operates with a Commodore 64 com­ puter, oraCommodore 128computer in 64 mode. The program can be used with serial printers and one or two disk drives (or a dual drive) in addition to the necessary modem and monitororTV.

  • Page 22: Keyboard Entry

    Keys such as CTRL and RETURN are enclosed in parentheses to distinguish them from single characters. Do not use the (SHIFT) unless it is specified. The Commodore key O and the Control keys (CTRL) are used like (SHIFT). TYPE: Type the desired multiple characters after the colon.

  • Page 23: Loading The Program

    LOADING THE PROGRAM NOTE: Before you use Common Sense, we suggest you copy the Common Sense program onto a separate disk. This will provide you with additional disk space for your own text and program files, and prevent damage to the special QuantumLink software included on yourprogram disk.

  • Page 24: Guided Tour

    GUIDED TOUR This guided tour is provided to demonstrate the major functions of Common Sense. Follow the instructions carefully and compare your display to the description in the manual. Once you are familiar with Common Sense, you should be able to use the program suc­ cessfully by referring to the summary of commands in the reference pages at the end of the section.
  • Page 25 Line Records the current location of the cursor (the little Number box that shows where the next character you type will appear) There are 700 lines in the main program screen, in a formation called a virtual screen. See Figure 4-2. You can view any part of the screen by scrolling, or moving sections of the screen around, until the area you want comes intoview.
  • Page 26 Tochange(1)above: PRESS: OD ENTER DELAY appears on the upper status line. TYPE:5(RETURN) Notice that the D002 on the sta­ tus line has been replaced by D005. To change (2) above: PRESS: OU to toggle between character delay and carriage return delay. Notice The D in the status line is replaced by a checkmark (^).
  • Page 27 When the receive toggle is on (R on the status line), all data received by the modem is translated from from industry-standard ASCII to PET ASCII. PRESS: (SHIFT)E to toggle the receive translator. Before continuing with the Guided Tour, toggle both translators ON.
  • Page 28 PRESS: OO To open the drive I/O channel. A list of options appears on the upper status line: 1 = WO OPEN Disk Write Channel OA/rite Open) 2 = WS SUSPEND Disk Write ^Write Suspend) 3 = WC CLOSE DiskWrite OA/rite Close) 4 = RO OPENDiskReadChannel (Read Open)

  • Page 29: Modem Setting

    Alpha Makes all letters appear in upper case without using Shift/Lock (SHIFT) or (SHIFT LOCK). An S appears in the status line when this feature is toggled on. PRESS: O<Up arrow> to toggle Alpha shift lock. Try typing a few words to check that they appear in uppercase before continuing with the Guided Tour.

  • Page 30: Dialing

    PRESS:(CursorDown) tocyclethroughthe available choices. Stop at the 1200 baud setting. The baud rate factor on the right of the upper status line can be adjusted with the + and - keys if your system needsaslightlyhigher or lower baud rate factor than 325.

  • Page 31: Function Keys

    (SHIFT)@—to define(F5)and (F7): (F5) 76703,2047 (RETURN) (SHIFT)@ insert your user I.D. (F7) (CTRL)0 Commodore (RETURN) (SHIFT)@ insert your password. (CTRL)0 ensures function key security; it prevents you or anyone else from looking at your password when the definitions are displayed.
  • Page 32 PRESS: OK then PRESS: S to save the new function key defini­ tions. Enter the new filename at the prompt. There are several other function key features: Auto-boot definitions. Common Sense contains a file that automati­ cally loads function key definitions at start-up. The filename is “mac.boot”.

  • Page 33: Screen Control Functions

    Screen Control Functions You can set any of five different screen areas to the colors most attractive to you. PRESS: OC to toggle screen control. The following appears on the prompt line: text1,text2,border,screen,cursor. PRESS: <1,2,B,S,orC> tocyclethroughtheavailablecolorsfor that screen area. When one area is the color you want, press another underlined character.

  • Page 34: Keyboard Functions

    If you are not online and you wish to continue with this Guided Tour, set the duplex for Half with the OM function. Keyboard Functions Common Sense uses the standard ASCII symbols ratherthan the Commodore symbols when displaying information. Other keys are also redefined. PRESS: (Back Arrow) An underscore appears on the screen.

  • Page 35: Screen Editor

    PRESS: (RETURN) The entire line of text is sent to the modem, and because we are in half duplex, is displayed in the upperarea. PRESS: (RUN/STOP) to exit split-screen mode. Screen Editor Up til now, all ourwork has been accomplished from screen 1. Screen editing commands are available on program screen 2.
  • Page 36 You can print the file listed by pressing (RETURN), or type a differ­ ent filename. For now, press (RETURN) and comsen.hlp is directed to the printer. 2) Print information visible on screen: PRESS: OS The contents of the screen visible at that moment are directed to the printer.

  • Page 37: Disk Functions

    The O 0 functions, though primarily designed for modem communi­ cations, can be used to move information around in your system. This capability is useful for translating files to/from PET ASCII and standard ASCII, since the data will pass through the translation tables associate with the modem.

  • Page 38: Disk Wedge Commands

    Set the Transmit and Receive translation toggles as indicated in the table of translation control in the Reference Section for the appropriate control. PRESS: (CTRL)5 You will be prompted for the write file name first. TYPE: <filename) This is the name of the file you want to create. Next you will be asked for the read file name.
  • Page 39 Example: backup the disk in drive 1 —new disk in drive 0. d0 = 1 Note: put a write-protect tab on the source disk to prevent accidental erasure. The destination disk is first reformatted so that any data on it is lost. INITIALIZE: force the disk unit to read the directory header on the disk.

  • Page 40: Filetransferprotocols

    CompuServe “B” is a proprietary file transfer protocol of Compu- Protocol Serve, lnc., used to send and receive files between your Commodore computer and CompuServe. Once you enable “ B” protocol (toggled using Ol) the process is automatic; the two computers will handle all communications without your intervention.

  • Page 41: Other Functions

    Transmit and Receive toggles are on. Use these settings when transferring sequen­ tial (text) files to non-Commodore computers. Turn off Transmit Translate when uploading (sending) to a Commodore system; turn off Receive Translate when downloading (receiving) from a Commodore system. Other Functions Common Sense has several commands listed in the command ref­...

  • Page 42: Reference

    REFERENCE Command Index Command Name Page Command Name Page Screen Dump Disk I/O Colors PrinterToggle Delay Factor Quit Edit CS R Return toTop Display Disk of screen File Print Visible Search Screen 38 Screen Clock Bookmark Inhibit Delay Factor B Protocol Toggle Split-Screen Switch Screens 41...

  • Page 43: Command Reference

    Command Reference Keys Name Purpose Transfer text from the virtual screen to Disk, Printer CS B Screen 1 or Modem. (Buffer Dump) Data Dump D— Dump range of data to Disk File Functions: ENTER: <filename> [See: SET RANGE below] P— Dump range of data to Printer [See: SET RANGE below] M—...
  • Page 44 Keys Name_____ Purpose_____________________________________ Provides a screen editor for editing screen 1 text as Edit Mode well as composing textual data for uploading from screen1 o rd iskfile . (RUNSTOP)-Abort editor Functions: (CTRL) D— Delete line (CTRL) l — lnsert line (CTRL) X—Transfer edit to screen 1 (CRSR) (up)-M ove cursor up 1 line (CRSR) (dow n)-M ove cursor down 1 line...
  • Page 45 Keys Name Purpose Inhibit B Inhibit or allow B Protocol processing. Protocol Functions: NONE Display: Letter ‘B’ Line 2 position 26 of System Status when B protocol allowed. Split Screen Allow simultaneous split screen operation with real Mode time received data displayed on lines 1 thru 23 and user key input to lines 24 and 25.
  • Page 46 Keys Name Purpose_____________________________________ Modem Permit user adjustment of modem transmission Functions characteristics. Functions: (CRSR) (rig ht)-S e le ct modem parameter. (CRSR) (dow n)-A djust selected parameter. (RETURN)— End function. (RUNSTOP)— End function. Disk I/O Toggle open status of disk channel Functions: 1 —Open disk write channel if closed.
  • Page 47 Keys Name Purpose________________________________ ____ Toggle delay after (RETURN) Delay After Return Functions: NONE Toggle between Screen 1 (700 line virtual screen and Switch Screen 2 the normal 25 line screen. Screens NONE Functions: Provide access to disk for user maintenance while Disk Wedge ‘on-line’.
  • Page 48 Keys Name Purpose Disk File Print desired disk file. To Printer Functions: ENTER: <filename> — File to print (RUNSTOP)-Abort function Zero Erase ALL 700 lines of virtual screen Screen 1 Functions: Y— Erase the screen. N — DO NOT erase the screen (RUNSTOP)-Abort the function.
  • Page 49 Keys Name Purpose (CTRL)5 File Copy Provide direct file copy between any disk units. Utility File may be translated to/from PET ASCII and Standard ASCII. Functions: ENTER: WRITE FILE NAME ENTER: READ FILE NAME Drive numbers set in filename entry. Device numbercontrolled byC*W/.

  • Page 50: Using The Change.mts Program

    Using the CHANGE.MTS Program Purpose: Alter the ASCII translation tables used by the Transmit and Receive toggles. You can adjust the translation tables to generate any single- charactervalue desired. The most common use of CHANGE.MTS is to alterthe action of the DELETE key: the table as supplied converts the PET ASCII Delete to a true ASCII Delete (decimal 127, hex $7F) which is the value used by Digital VAX systems and many main­...

  • Page 51: Setting Up Multiple Drives

    (8) Enter the new decimal code. ENTER: 8 (9) Select Receive. TYPE: r (10) Select code to view/change. The program expects the decimal value equivalent of the received character you are viewing/changing. Use a standard ASCII chart. ENTER: 8 The program will display 0 (null character). (11) Indicate whether you wish to save or change.

  • Page 53: Using The Vt52-64 And Vt100-128 Terminal Emulators

    There are two terminal emulator programs on your program disk: 1) The VT52™ Terminal Emulator program works with both the Com­ modore 64 and the Commodore 128 in 64 mode. It features 40 or 80-column screen output. No additional hardware is required to generate 80 columns, however, a high resolution monitor such as the Commodore 1702 or 1902 is recommended.

  • Page 54: Keyboard Substitutions

    You must inform the host computer that you will be using a terminal emulator. Each mainframe or information service that recognizes terminal emulators has a set of preliminary instructions that declares the use of a VT52 or VT100 terminal emulator. Refer to the paragraphs entitled “...
  • Page 55 (as it does when switching modes). (C *) The COMMODORE key acts as a SCROLL/NO-SCROLL key. This key will send a CTRL S to the host to temporarily suspend the out­ put. Pressing it again will send a CTRL Q to the host, to restart the output from where it left off.

  • Page 56: Declaring The Vt52 Terminal Emulator

    UNIX programs such as vi, emacs, more, rogue, etc.: qc|c64|C64|Commodore 64:co#40:li#25: \ :up = \ EA:do = \ EB:cl = \ EH \ EJ:bs: \ :bw:ho = \ EH:nd = \ EC:so = \ Eo: \...

  • Page 57: Vt100-128

    64 80 Col X 25 Lin:co#80:li#25: \ :up = \ EA:do = \ EB:cl = \ EH \ EJ:bs: \ :bw:ho = \ EH:nd = \ EC:so = \ Eo: \ :se = \ En:cm = \ EY% + % + : \ :ce= xE K :sr= \E I:p t: VAX VMS™...
  • Page 58 Using the Features of VT100 The features of the VT100-128 program are accessed by using the [ALT] key. The [ALT] key is located in the upper left hand corner of the C128 keyboard between the TAB and the CAPS LOCK keys. You hold down the [ALT] key, while pressing another key.
  • Page 59 Press <return> after entering the number. A comma inserted in the phone number causes a one-second delay. To hang up the phone (modem), type: h then <return> To answer a call, type: a then <return> Toexit, press <RUN-STOP>. [ALT] B TOGGLE THE BUFFER This key will toggle the buffer ON or OFF.
  • Page 60 Dump to Screen—press NO SCROLL to pause or resume printing. Now press Y or N to clear the buffer or not. Dump to Modem—will send the buffer con­ tents backtothe host computer. Hit (RUN- STOP) to abort. Clear the Buffer—will discard the entire buffer contents.
  • Page 61 choose which function key to define. Press <return> ifyou wantthe command to be executed. End the function key definition with the < RUN-STOP> key. [ALT] K will also let you load and save function key definitions by pressing L or S, and typing the filename as prompted. You may also view the funtion key definitions by pressing V in the [ALT] K menu.
  • Page 62 are experiencing many errors at 1200 baud, you might want to adjust this slightly by pressing the “ + ” and “ -” keys. After every­ thing is set, press <RUN-STOP> to exit. [ALT] N Load new Options File This key will load the file “ OPTSET” from disk that contains infor­ mation about the default screen colors, the drive device number, the type of modem being used, the printer secondary address, the printer hold off guard time for printing on the fly, uploading prompt,...
  • Page 63 2 = Modem/300 (1660) with carrier detect 3 = Modem/300 (1660) without carrier detect 4 = Modem/1200 (1670) and other smart modems You can also change the printer secondary address. Normally this is set to 7 to force lower case printing. The hold off guard time is also programmable.
  • Page 64 This key allows you to transfer a sequential file from disk to either the screen, or the printer without using the buffer. Simply enter S or P for Screen or Printer, then enter the file name and press return. Press any key to exit. [ALT] U ASCII Upload Disk File This key allow you to do a straight ASCII upload of text information...
  • Page 65 If you accidentally cleared the buffer, this key will let you recover it. Simply press Y or N to confirm your request. [ALT] BACK-ARROW Create a backup disk This will allow you to save the program, and create the ASCII trans­ lation and TELSET display character files.
  • Page 66 SEVEN EXTRA KEYS There are seven characters not implemented on a C128 that are necessary for a VT100. They have been assigned as follows: (left curly brace) shift + (right curly brace) shift- (vertical bar) (tilde) shift up-arrow (carat) up-arrow (backslash) British Pound (grave accent)

  • Page 67: Technical Information

    Line Interface: Direct Connect, two RJ11Cmodulartelephone jacks FCC part 68 approved (USA), DOC approved (Canada) Data Interface: Commodore User Port (inverted TTL RS232C) Carrier Indicator: Carrier tone from built-in piezo electric speaker Dialing Method: Touch Tone (DTMF) or Rotary (pulse)
  • Page 68 Billing Delay: 2.1 seconds AbortTimen 17 seconds after billing delay Loss of Carrier Disconnect: 250 ms TransmitLevel: Carrierlessthan -9 d B m Tone Pair less than 1 dBm Carrier Frequencies: Transmit/Originate Receive/Originate Receive/Answer Transmit/Answer 212A Mode: 1200 Hz + - .001 % 2400 Hz + - .001 % 103 Mode: Mark: 1270 Hz + - .5%...

  • Page 69: High Speed/Low Speed Protocol

    modem checks DIP switch 1, and if it is down, it will ignore all incom­ ing calls (as if you had issued an ATS0 = 0 command). With the switch UP, the modem will answer on the second ring. HIGH SPEED/LOW SPEED PROTOCOL In the Originate Mode (that is, dialing out), the modem will automati­...
  • Page 70 RS232 buffer. In the Commodore 64 and 128, the RS232 routines are provided in software. This software UART is very sensitive to speed varia­ tions. The setting in the OPEN statement for 1200 is just that—1200 baud, not 1205or1195.

  • Page 71: Troubleshooting

    This section describes some of the common problems you may encounter using the Modem/1200, and tells what to do to fix them. CONNECTION PROBLEMS 1. “ I followed the connection instructions, but when I turned the computer on the modem started buzzing!” When you turn the modem on, one beep is normal.
  • Page 72 2. “ I am getting extra random and/or garbled characters on the screen in addition to what I am transmitting and receiving.” This can be caused by a noisy or “ hot” telephone line Solution 1) Alter the parameters according to the directions provided by Common Sense or any other terminal program you are using, and try to retransmit.

  • Page 73: Customer Support

    Commodore CustomerSupport: 1200Wilson Drive West Chester, PA 19380 (215) 436-4200 Commodore representatives are on hand to help you find and cor­ rect any problem. You can call between 9 a.m. and 6 p.m., Monday through Friday.

  • Page 75: Appendix A Dip Switches

    Appendix A— DIP Switches On the back of the Modem/1200 are four small levers known as DIP switches (Dual In-line Package). Each switch has only two settings (ON and OFF). These switches adapt the modem to your equipment and specific requirements. Generally, the factory settings are appropriate for most use.You may need to change some DIP switch settings to obtain accurate telecom­...
  • Page 76 Table A-1 lists the DIP switch settings and their functions. DIP Sw itch S ettin g s Switch Function Setting Auto Answer Enable Auto answer suppressed DOWN Modem answers on second ring Carrier Detect Enable Carrier detect on pin H-K of edge connector DOWN No carrier detect signal Only Plus/ 4 users need be concerned with this switch.

  • Page 77: Appendix B Customizing Common S E N Se

    Appendix B— Customizing Common The method for modifying the BOOT program to customize Com­ mon Sense to your preference or needs has three phases: 1) List the program lines storing the parameterdata. 2) Modify the lines to suit your needs: Type over the characters you want to change.
  • Page 78 To Alter Printer Settings Printer Type Device # Sec.Channel Print command bytes minus 1 Default 0 (PET) REM line 276-77 number Line number for data In addition, lines 280-320 define the printer command string. Lines 280-284 are REM statements showing how the data should be entered.
  • Page 79 To Alter the Clear Screen Indicator Default 0 (Clear Screen) REM line number Line number for data To Select Modem Type Default 3(1670,1600) REM line 390-393* number Line number for data *The“ old” 1660 mentioned in line 391 has serial number0to30000 and was made in the USA.

  • Page 80: Appendix C Federal Communications Commission Statement

    Relocate the computer and/or the receiver so that they are on separate branch circuits. If necessary, consult your Commodore dealer or an experienced radio/television technician for additional suggestions. You may find the following booklet, pre­ pared by the FCC, helpful: How to Identify and Resolve Radio-TV Interference Problems Stock No.
  • Page 81 Do not attempt to make such connections yourself; contact the appropriate electric inspection authority or electrician. Commodore Modem/1200 Load Number: 5B The load number (LN) assigned to each terminal device denotes the percentage of the total load to be connected to the telephone loop used by the device, to pre­...

  • Page 82: Glossary

    Interchange. ASCII is the code that represents the characters on the keyboard. Standard ASCII uses 7 bits to represent a charac­ ter, and Commodore ASCII uses all 8 bits (in a byte) to allow an extra 128 graphics characters. An ASCII conversion routine like Common...
  • Page 83 Bulletin Board—An electronic public storage medium within an information networkwhere messages can be transmitted and received. Byte—a unit of information consisting of combinations of bits. A byte may represent a letter, number, special symbol, or control information. Conferencing—A method of communication where several users within a large geographic area can “...
  • Page 84 Stop Bit—A bit that signals the end of a character being transmitted. Synchronous/Asynchronous Communication—A synchronous computer system transmits data according to and in unison with the internal system clock of the computer. Asynchronous systems, like your Commodore computer, transmit data independently of the...
  • Page 85 internal system clock and use start and stop bits to regulate data transmission. Telecommunications—the sending and receiving of information between computers across standard telephone wires. Also known as telecomputing. Terminal Mode—The mode of operation in which sending and receiving information takes place. Upload—The process of transmitting the contents of yourcomput- er’s memory to the memory of another computer where it can be executed orSAVEd.

  • Page 87: Index

    index A............Compuserve........51 Abort dialing........Conferencing........77 Alpha shift lock........CONNECT......... 63 ALT k e y ..........Connecting your modem/1200..2, 5 Answer/originate mode...... Connection problems......65 ASCII upload disk file......CONNECT1200 ......... 63 ASCII........31,59, Contents of box........2 A T ............
  • Page 88 Protocol........23, 48, 78 Function key definitions....... 25 Q n............11 Function keys......25, 39, 54 QuantumLink........2 Garbled characters......65 Glossary..........4, 76 QUIT program........40 R ............9, 20 Guided to u r........18 Read or write channel......34 Handshake......... 77 Hang u p ..........24 Receive translate........43 Recover to a cleared buffer....
  • Page 89 UNIX........... 50 Xmodem......Upload..........79 Xmodem file transfer mode VALIDATE...........33 Xmodem transfer.... VAX............. 50 X n ........V M S ......X-On/X-Off...... V n ............12 Z........Voices..........66 ZAP........ VT100-128......2, 47, 51,60 Zero screen 1 ....VT52-64........2, 47, 48 @........
  • Page 92 COMMODORE' Commodore Business Machines, Inc. Commodore Business Machines Limited 1200 Wilson Drive • West Chester, PA 3470 Pharmacy Avenue • Agincourt, Ontario, M1W3G3 319854-02 Printed in USA...

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