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Commodore PET2001 / 3008 / 4016; CBM3032; VIC20

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Commodore PET2001 / 3008 / 4016; CBM3032; VIC20 commodore PET 2001 MEMORY Commodore for much higher Random Access Memory (user reliability of recording and Memory): 8K included. record retention Expandable to 32K bytes High noise immunity, error externally. detection, and correction Read Only Memory (operating Uses standard audio cassette system resident in the tapes computer): 13K bytes Tape files, named 8K BASIC interpreter OPERATING SYSTEM 4K — Operating system Machine language accessibility 1K — Diagnostic routine File management in operating VIDEO DISPLAY UNIT system 9" enclosed, black and white, Cursor control, reverse field, and high-resolution CRT graphics under simple BASIC 1000 character display, arranged control 40 columns by 25 lines Cassette file management from 8 x 8 dot matrix for characters BASIC and continuous graphics Pseudo random number Automatic scrolling from bottom Generator of screen INPUT/OUTPUT Winking cursor with full motion All other I/O supported through control IEEE-488 instrument interface Reverse field on all characters which allows for multiple the PET keyboard (White on black or black on intelligent peripherals white) All I/O automatically managed 64 standard ASCII characters; 64 by operating system software The PET keyboard consists of 73 keys. There are the usual graphic characters Single character I/O with GET KEYBOARD command alphanumerics (A-Z and 0-9) found on typewriters and calcul- 91/2" wide x 3" deep; 73 keys Easy screen line-edit capability All 64 ASCII characters available Flexible I/O structure allows for ators and some computers. But the PET has something more: without shift. Calculator style BASIC expansion with 64 graphic characters. The graphics can be used for plots, for numeric key pad intelligent peripherals All 64 graphic and reverse field BASIC INTERPRETER fun and games or for artwork. There are also special screen and characters accessible from Expanded 8K BASIC; 20% faster keyboard (with shift) than most other 8K BASICS keyboard control keys which allow the moving of the cursor in Screen Control: Clear and erase Upward expansion from current four directions, the reversing of characters and background, the Editing: Character insertion and popular BASIC language deletion Strings, integers and multiple inserting and deleting of characters. Shift keys and a run/stop CASSETTE STORAGE dimension arrays key are also provided to facilitate keyboard operations. By the Fast Commodore designed 10 significant digits; floating point redundant-recording scheme, numbers use of a POKE command, lower case letters are obtained instead assuring reliable data recovery Direct memory access through Cassette drive modified by PEEK and POKE commands of the graphic symbols above the capital letter keys. COMING SOON! Imported and distributed by: PET PLUS... RADIO PARTS Group PROFESSIONAL PERIPHERALS: 360K dual drive floppy disk 562 Spencer Street, West Melbourne. (03) 329-7888 storage system. Tractor feed printer. 1103 Dandenong Road, East Malvern (03) 211-8122 TRADE ENQUIRIES WELCOME Electronics Today International — April 1979 77 commodore pEr YOUR COMPLETE PE RSONAL COM PUTE R... FOR THE PRICE OF ATOP TYPEWRITER At Hanimex, we believe that everyone should benefit from the latest technological advances. That's why we have introduced the Commodore PET. a personal, portable computer that's surprisingly Storekeepers need PET for inventory inexpensive. control. Engineers use it for complex The PET has been specially designed calculations. Professional men can for people who want all the advantages maintain their records. Graziers can of computer processing without the control stock and feed statistics. Real cost and complexity of most mini- estate agents can catalogue property computer systems. profiles, and in the home, PET can help you relax with entertainment It consists of a TV screen, keyboard programmes including chess, and built-in cassette deck. So you don't need an additional TV monitor, just backgammon and space games. It also plug it into mains power. incorporates teach-yourself programmes for subjects such as Because the PET is a personal mathematics and languages. Whatever computer, it uses BASIC language. the job, you will have a need for PET at The easiest to learn and the simplest to work and at home. programme. And over 200 standard programmes in business, science, education and entertainment are Dealer enquiries invited already available. For further information or a demonstration call the Business Equipment Division. HANIMEX The Australian company with the- international reputation. ELECTRONICS Australia, September, 1979 11 The Commodore CBM 3032 is a computer system designed par- Lower case characters are available by ticularly for use in small businesses. It is supplied complete with using a Basic instruction to poke a data byte to a location in RAM. In this mode the dual floppy drive systeni and an 80-column tractor feed printer. It shift key gives lower case. Because of this is backed by a large number of software packages which make it arrangement, the graphics characters and applicable to most business and professional fields. lower case letters are mutually exclusive. Both cannot be displayed at the same by PETER VERNON time, although, as we will see, both can be printed on the same line by an attached printer. The system we reviewed was the CBM comprehensive range of commercial ap- When the machine is turned on the value Professional Business System, comprising plications software. of the built-in monitor becomes apparent. the CBM 3032, the 2040 Dual Drive Floppy The most immediately striking thing The green phosphor display presents Disk and the 2022 Tractor Feed Printer. about the Commodore CBM 3032 is the bright, clearly readable 8 x 8 dot matrix Commodore are marketing this system as built-in 22cm video monitor, enclosed in a characters with excellent definition, in 25 an integrated package for business use, stylish fairing above the keyboard. Most lines of 40 columns. Using the CBM 3032 is although their earlier machine, the PET, small microcomputer systems require con- very easy on the eyes. was aimed more at the "home computer" nection to an external video monitor, For many business applications a 40 col- market. which is often a hidden component of the umn line is not long enough, however. Because of this the CBM 3032 has many overall cost. Realising this, Commodore have provided features that make it attractive .to the hob- The keyboard itself is a conventional 73 the CBM with the capability of defining byist as well as to the business user. The key stepped keyboard, with a separate more than 40 characters as a line. When special graphics characters can be used for numeric keypad and 64 special graphics the cursor reaches the end of the first line games and video art as well as for the characters. Unshifted, the keyboard gives it automatically jumps to the next line, and generation of graphs and visual presenta- upper case characters: press the shift key the display continues without a space. The tions of business data, and many games and the special graphics characters are in- end of the line is marked by the closing programs are available, in addition to a stantly available. quotes. In this way two lines of 40 characters on the screen can be printed as 718re. "'Vela4;4441, eif,f 4,1211,11111,11111 a single 80 character line. While this capability overcomes the limitations of small screen size, it is a little confusing to use. It is easy to forget, for ex- ample, that moving the cursor down one line does not automatically create a space. It is also easy to forget that the extended line feature only operates for two lines. At- tempting to continue onto a third line results in a syntax error. The keyboard of the CBM is not exactly comparable to a typewriter keyboard. For example, there are no numbers on the up- per keys, these being confined to the numeric keypad. The upper keys contain the punctuation normally used in Basic programming, such as "" and 0, which are available without using the shift key. This allows some time saving in entering pro- grams, but is likely to confuse a user already accustomed to a conventional typewriter keyboard. The keyboard has a couple of annoying features. There is no Reset key, so if the user is "locked out" by a misbehaving pro- gram, the only solution is to turn the machine off and then on again. This is an- noying when developing programs in This photograph shows the special graphics character set of the CBM 3032. The Basic, and even more disadvantageous characters correspond to the legends on the front of the key tops. when working with the Machine Language 112 ELECTRONICS Australia, June, 1980 • ••• ........ • • • . • The CBM 3032 Professional Computer with the 2040 Dual Drive Floppy Disc and the 2022 Tractor Feed Printer. monitor developing machine language movement control characters it is easy to the usual scientific functions, and also has a programs. program animated displays or to exactly nine digit value for pi built in. Calculations Looking at some of the physical specifica- specify a printing format. Each cursor can be made in floating point form or tions, the CBM 3032 is 415mm wide by movement control character moves the scientific notation, with exponent values 460mm deep, with an overall height of cursor one space, however, the lack of a between ±38 and up to 10 significant digits 350mm (including the video monitor), and repeat key is a disadvantage here. There is in the mantissa. weighs 20kg. Unlike many other small no way to speed up the process by using CBM Basic also includes a useful state- systems, the CBM 3032 is packaged in a Repeat to give multiple key operations. For ment, GETA$, which will input a single sheet steel case, giving it a very solid "feel" example, to print a character in the 35th character from the keyboard.
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