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Text of the page (random words):
rced material may be challenged and removed find sources ibm basic news newspapers books scholar jstor september 2012 learn how and when to remove this template message five 8 kb rom dip chips and an empty 8 kb rom expansion socket on an ibm pc motherboard four chips hold cassette basic and one holds the bios the ibm personal computer basic commonly shortened to ibm basic is a programming language first released by ibm with the ibm personal computer model 5150 ibm pc in 1981 ibm released four different versions of the microsoft basic interpreter licensed from microsoft for the pc and pcjr they are known as cassette basic disk basic advanced basic basica and cartridge basic versions of disk basic and advanced basic were included with ibm pc dos up to pc dos 4 in addition to the features of an ansi standard basic the ibm versions offered support for the graphics and sound hardware of the ibm pc line source code could be typed in with a full screen editor and very limited facilities were provided for rudimentary program debugging ibm also released a version of the microsoft basic compiler for the pc concurrently with the release of pc dos 1 10 in 1982 contents 1 background 2 ibm cassette basic 3 ibm disk basic 4 ibm advanced basic 5 ibm pcjr cartridge basic 6 operation 7 legacy 8 references 9 external links background edit ibm licensed microsoft basic for the ibm personal computer despite already having its own version of basic for the company s mainframes don estridge said microsoft basic had hundreds of thousands of users around the world how are you going to argue with that 1 ibm cassette basic edit ibm cassette basic developer microsoft for ibm first appeared 1981 influenced ibm disk basic ibm basica gw basic ibm cassette basic came in 32 kilobytes kb of read only memory rom separate from the 8 kb bios rom of the original ibm pc and did not require an operating system to run cassette basic provided the default user interface invoked by the bios through int 18h if there was no floppy disk drive installed or if the boot code did not find a bootable floppy disk at power up the name cassette basic came from its use of cassette tapes rather than floppy disks to store programs and data cassette basic was built into the roms of the original pc and xt and early models in the ps 2 line it only supports loading and saving programs to the ibm cassette tape interface which is unavailable on models after the original model 5150 the entry level version of the 5150 came with just 16 kb of random access memory ram which was sufficient to run cassette basic however cassette basic was rarely used because few pcs were sold without a disk drive and most were sold with pc dos and sufficient ram to at least run disk basic many could run advanced basic as well there are three versions of cassette basic c1 00 found on the early ibm pcs with 16 64k motherboards c1 10 found on all later ibm pcs xts ats and ps 2s and c1 20 found on the pcjr ibm disk basic edit ibm disk basic developer microsoft for ibm first appeared 1981 influenced by ibm cassette basic influenced ibm basica gw basic ibm disk basic basic com was included in the original ibm pc dos because it uses the 32 kb cassette basic rom 2 basic com did not run on even highly compatible pc clones such as the compaq portable 3 the name disk basic came from its use of floppy disks as well as cassette tapes to store programs and data disk based code corrected errata in the rom resident code and added floppy disk and serial port support disk basic can be identified by its use of the letter d preceding the version number it adds disk support and some features lacking in cassette basic but does not include the extended sound graphics functions of basica the primary purpose of disk basic was as a light version for ibm pcs with only 48 kb of memory basic com would then have about 23 kb free for user code whereas basica would only have about 17 kb by 1986 all new pcs shipped with at least 256k and dos versions after 3 00 reduced disk basic to only a small stub that called basica com for compatibility with batch files even with all this excess ram basic would still only allocate and manage just under 61 kb for user programs whether it was cassette basic basic com or basica ibm advanced basic edit ibm advanced basic basica developer microsoft for ibm first appeared 1981 1981 platform ibm personal computer os ibm pc dos influenced by ibm cassette basic ibm disk basic influenced gw basic ibm advanced basic basica com was also included in the original ibm pc dos and required the rom resident code of cassette basic 2 it adds functions such as diskette file access storing programs on disk monophonic sound using the pc s built in speaker graphics functions to set and clear pixels draw lines and circles and set colors and event handling for communications and joystick presses basica will not run on non ibm computers even so called 100 compatible machines or later ibm models since those lack the needed rom basic basica versions are the same as their respective dos beginning with v1 00 and ending with v3 30 the early versions of basica do not support subdirectories and some graphics commands functioned slightly differently as an example if the line statement was used to draw lines that trailed off screen basic merely intersects them with the nearest adjacent line while in basic 2 x and up they go off the screen and do not intersect the paint command in basic 1 x begins filling at the coordinate specified and expands outward in alternating up and down directions while in basic 2 x it fills everything below the starting coordinate and then after finishing everything above it basic 1 x s paint command also makes use of the system stack for storage and when filling in complex areas it is possible to produce an overflow error to remedy this the clear statement can be used to expand basic s stack 128 bytes is the default size basic 2 x does not use the stack when painting and thus is free of this problem compaq basic 1 13 was the first standalone basic for the pc that did not require cassette basic to run as well as the only version of basic besides ibm basica 1 00 and 1 10 to use fcbs and include the original line statement with intersecting lines the paint statement in compaq basic 1 13 worked like in all later versions of basica gw basic using the new fill algorithm and no stack early versions of pc dos include several sample basic programs demonstrating the capabilities of the pc including the basica game donkey bas gw basic is identical to basica with the exception of including the cassette basic code in the program thus allowing it to run on non ibm computers and later ibm models that lack cassette basic in rom ibm pcjr cartridge basic edit a rom cartridge version of basic was only available on the ibm pcjr shipped in 1984 and supports the additional graphics modes and sound capabilities possible on that machine 4 it is a superset of advanced basic 5 cartridge basic can only operate within the first 128 kb of memory on the pcjr and will not work with expansion ram i e the def seg function cannot be used to point to memory segments above h1ff0 cartridge basic is activated by typing basica at the dos prompt conversely ibm basica versions 2 1 and up will refuse to run if it detects a pcjr but can be patched to work around this operation edit cassette basic loads when a pc or pcjr is booted without a bootable disk or cartridge disk basic and advanced basic load when their command name basic and basica respectively is typed at a dos command prompt except pcjr which activates cartridge basic instead with some optional parameters to control allocation of memory when loaded a sign on identification message displays the program version number and a full screen text editor starts see images right the function keys are assigned common commands which display at the bottom of the screen commands may be typed in to load or save programs and expressions can be typed in and executed in direct immediate mode if a line of input starts with a number the language system stores the following line of text as part of program source allowing a programmer to enter in an entire program line by line entering line numbers before each statement when listed on screen lines are displayed in order of increasing line number changes can be made to a displayed line of program source code by moving the cursor to the line with the cursor keys and typing over the on screen text program source is stored internally in a tokenized form where reserved words are replaced with a single byte token to save space and execution time programs may be saved in compact tokenized form or optionally saved as dos ascii text files 6 that can be viewed and edited with other programs like most other dos applications ibm basic is a text mode program and has no features for windows icons mouse support or cut and paste editing legacy edit gw basic launched in 1983 is a disk based microsoft product that was distributed with non ibm ms dos computers and supports all the graphics modes and features of basica on computers that do not have ibm cassette basic the successor to basica for ms dos and pc dos versions now discontinued is qbasic launched in 1991 it is a stripped down version of the microsoft quickbasic compiler qbasic is an interpreter and cannot compile source files while quickbasic can compile and save the programs in the exe executable file format quickbasic also includes certain advanced language statements and functions mostly involving os interfacing and low level machine language programming supports multi module programs and includes advanced debugging features all of which are absent from qbasic references edit curran lawrence j shuford richard s november 1983 ibm s estridge byte pp 88 97 retrieved 19 march 2016 a b williams gregg january 1982 a closer look at the ibm personal computer byte p 36 retrieved 19 october 2013 dahmke mark january 1983 the compaq portable byte pp 30 36 retrieved 27 july 2013 readers feedback ibm basic versions compute magazine no 78 november 1986 p 8 retrieved december 23 2011 ibm pcjr cartridges announcement letter 1983 11 01 1 dos text files terminate each line with a cr carriage return ascii 13 and lf linefeed ascii 10 character pair in that order external links edit a brief history of the development of basic www phys uu nl bergmann history html archived pce ibm pc emulator emulates ibm cassette basic and ibm cassette interface with connected third party cassette drive popbasic runbasic which invokes copies ibm cassette basic v t e dialects of the basic programming language list classic atari atari basic atari st basic basic programming atari 2600 microsoft altair basic applesoft basic atari microsoft basic color basic commodore basic disk extended color basic extended color basic gw basic ibm basic mbasic microsoft basic ms basic for macintosh msx basic trs 80 basics level i level ii iii thomson basic 1 0 texas instruments ti basic ti 99 4a ti basic calculators ti extended basic aka xbasic ti basic 83 hewlett packard hp time shared basic rocky mountain basic locomotive software locomotive basic mallard basic optimized systems software basic a basic xe basic xl microcomputers atom basic integer basic jr basic north star basic sinclair basic s basic southampton basic system scelbal vilnius basic minicomputers basic 11 business basic b32 data general data general extended basic wang basic time sharing computers basic plus vsi basic for openvms dartmouth basic super basic call 360 basic other alphabasic basicode bal casio basic cbasic chinese basic family basic macbasic pbasic sds basic stos basic tiny basic turbo basic xl ubasic zbasic etbasic zh extenders basic 8 graphics basic simons basic super expander super expander 64 ys megabasic procedure oriented proprietary amigabasic amos basic asic basicx bbc basic beta basic futurebasic gfa basic grass liberty basic lse mapbasic mobile basic owbasic powerbasic purebasic qbasic quickbasic superbasic smilebasic thinbasic tiger basic true basic turbo basic wordbasic free and open source basic 256 basic4gl darkbasic euphoria indic basic open programming language sdlbasic smallbasic qb64 wxbasic xbasic xblite yabasic with object extensions proprietary autoit chipmunk basic glbasic lotusscript morfik powerbasic providex run basic vba vbscript vb 5 for microsoft excel 5 0 vsto vsta embedded visual basic winwrap basic free and open source blitzmax freebasic microsoft small basic mono basic openoffice basic scriptbasic roslyn rad designers proprietary ca realizer visual basic classic ns basic phoenix object basic rapidq visual basic net xojo free and open source basic for qt b4x basic4android basic4ppc gambas hbasic winfbe visual fb editor v t e ibm personal computers desktop and all in one single models 5120 datamaster pc pc xt xt 370 3270 pc xt 286 jx pcjr pc at at 370 3270 at series 5550 ps 2 list of models 25 25 286 25 sx 30 30 286 e ps v ps 1 ps 55 eduquest valuepoint ambra pc series aptiva netvista thinkcentre a series m series portable 5100 5110 portable pc ps 2 portables p70 p75 laptop non thinkpad convertible ps 2 laptop l40 sx cl57 sx ps 2 note and ps note n33sx n45sl n51sx n51slc model 425 425c ps 55 note pcradio thinkpad 2 xx series 220 230 235 240 3 xx series 300 310 350 360 365 380 390 5 xx series 500 550bj 555bj 560 570 6 xx series 600 7 xx series 700 701 butterfly 750 760 765 770 power series 800 820 821 822 823 850 851 860 g series g40 g41 g50 t series t20 t21 t22 t23 t30 t40 t41 t42 t43 t60 t61 a series a20m a21m a22m a22e a20p a21p a22p a30 a31 a30p a31p x series x20 x21 x22 x23 x24 x30 x31 x32 x40 x41 x60 x60t x61t r series r30 r31 r32 r40 r50 r51 r52 r60 r61 others transnote handheld palm top pc 110 workpad z50 prototypes leapfrog power series 600 thinkpad 240 with transmeta crusoe watchpad related ibm basic ibm pc compatible industry standard architecture influence on the pc market micro channel mwave retrieved from https en wikipedia org w index php title ibm_basic oldid 1119076259 categories basic interpreters discontinued microsoft basics programming languages created in 1981 x86 ibm personal computers ibm software basic programming language family microsoft programming languages hidden categories articles with short description short description matches wikidata articles needing additional references from september 2012 all articles needing additional references ac with 0 elements navigation menu personal tools not logged in talk contributions create account log in namespaces article talk english views read edit view history more navigation main page contents current events random article about wikipedia contact us donate contribute help learn to edit community portal recent changes upload file tools what links here related changes upload file special pages permanent link page information cite this page wikidata item print export 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