Summary of Contents for Commodore Computers VICMODEM VIC-20
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«1020 The friendly computer VICMODEM S commodore ' COMPUTER...
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REQUIRED FCC NOTICE The Federal Com m unications Commission (FCC) has established rules w hich govern data modem direct connection to the telephone network. A jack is provided by the telephone com pany for the direct connection. Jacks o fth e m odulartype re q u ire d fo rth e connection are not provided on party lines or coin lines.
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A PIONEERING ACHIEVEMENT IN MODEM TECHNOLOGY Commodore wants everyone tojoin the “Computer Revolution” — that’swhywe invent productswhich are notonlyrevolutionarybut also affordable. The VICMODEM™ is only an example. When Commodore introduced VIC 20" — the Friendly Computer, the first color computer priced under $300, we wanted to include a telephone modem to go with it, but we wanted our modem to be in the $100 range, so everyone could afford telecomputing.
data with almost any type orsize computer. You can use yourVIC to “talk” over the phone with other VIC users or users of other computers, tie into computer “telephone bulletin boards,” or access a computer information service. SCIENCE FICTION IS NOW REALITY Science fiction writers used to speculate that one day we’d be able to use “electronic libraries”...
With your new modem, YOU can access information resources that up to now only the largest libraries and businesses could afford. If you’re a programmer, you can use different computer languages and programming tools. Add to this the many personal services available and you’ve stepped into the next era of technology.
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Expansion Port User Port Figure 1. 3. Dial the correct phone number, listen for a high pitched tone, then remove the plug from the handset, (see figure 3) 4. On the side of the VICMODEM there is a red indicator light, (see figure 2) This light will illuminate when the modem is transmitting and receiving information via the telephone.
5. Load your terminal software (you will need to use a “terminal program” to allow your VIC to “talk” over the telephone). You can use any of the following programs. a. VICTERM I - this is a cassette program included with your VICMODEM.
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4. Insert the plug into the phone socket in the back of the VICMODEM. (see figure 2) Now your computer is ready to operate as a terminal. At this point you must follow the instructions given to you with your CompuServe subscription, or, if using another service, in their instructions.
The following computer program is for use with the VIC 20. This is a third method of turning your VIC into a terminal. You may type this into the computer and then start it by typing “ run”, those of you learningto program mayfindsomeofthe routines interesting! For your convenience, we have provided an explanation of the listing.
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Software Explanation Line Number(s) Explanation Opens channel to modem Dimensions input and output buffers Places special characters into transmitting array Enters carriage return, disables Shift into the array and defines the reverse key Enters lower case characters into the array Enters special characters into the array Enters upper case characters into the array Defines the RVS/OFF and f1 keys as break keys...
GLOSSARY The following is a brief explanation of a few of the words used in this manual. 1. Answer/Originate — This function refers to the switch on the side of the VICMODEM and allows your computer to initiate communications or receive data when another VIC or other computer connects to you.
TECHNICAL INFORMATION VICMODEM is a data communications modem. The VICMODEM iscompatiblewith the Bell 103 type modems. It isadirectconnect modem, can operate in full duplex, has a switch selectable originate and answer mode and has a data rate of 0 to 300 BPS. (The baud rate may be changed thru VICTERM I).
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Line Interface: FCC part 68, Direct Connect Data Interface: TTL Standard Indicator: Data Carrier Detect Lamp Power Requirement: 9-11 Vac, 60 Hz, 180 mW...
VICTERM I AND TERM 64 Introduction There are two sides to the cassette tape — one side is for use with the VIC-20 (VICTERM I) and the other side is for use with the Commodore 64 (TERM 64). This software gives your com puter the ability to act as a “terminal”.
*Activated control — keys to send operating instructions to the host computer such as stop, hold, and begin transmitting. *1 0 0 % m achine language program — give you very fast and accurate program operation. SPECIAL FUNCTIONS MENU A menu is a listing of all the options available to the user, in the same manner a restaurant menu is a listing of the entrees available.
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2. Duplex — A computer in full duplex mode will “echo” back to thesender’s screen all signals it receives. This checks infor mation against loss or alteration. It is similar to speaking to someone who repeats every word you say. The half duplex mode of operation does not “...
3. Word Length — This controls how many bits are in each character. Most computers use 7 or 8 bits. Set the word length by pushing W, then use the CRSR right key to make your selection. Press RETURN when finished. 4.
2. VIC-to-VIC/VIC-to-ASCII — Most computers create characters according to a standard set of codes called ASCII. Com modore’s computers use a slightly different set of codes. VICTERM I translates this different “ language” from other computers as well as giving you the full range of graphics and sound when communicating VIC to VIC.
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5. When the VIC has found the program, “ loading” will ap pear on your TV screen, which lasts for a minute or two. 6. As soon as loading is complete the computer will say “READY.” Type “ RUN” and press return. The screen will briefly flash the copyright notice and next, TERMINAL READY will appear at the top of the screen.
Table 2b. Color Controls for TERM 64 Depress CTRL key with: Effect on Output: border color character color screen background (2 color mode only) sending computer’s character color FUNCTION KEYS We have set each of the function keys to send a different con trol signal.
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NOTE: Remember, communicating with anothercomputerre- quires the modems to be set in opposite modes, one in “answer” the other in “originate”. Normally, working with ser vices like CompuServe your modem should be set to “O” (originate). Listed below, in table 3, is a listing of the ASCII codes, their functions and how to access these control commands on the VIC.
INDEX C om m odore Info rm a tio n N e tw o rk .............. 2 C om puServe ....................2 C onnect Phone To M o d e m ................. 5 C ontrol M e n u ....................15 Format M e n u ....................13 Function K e y s ....................
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