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north star basic wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 overview 2 references toggle references subsection 2 1 citations 2 2 bibliography 3 external links toggle the table of contents north star basic add languages add links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia basic interpreter for the horizon microcomputer north star basic paradigm imperative designed by charles a grant mark greenberg developer north star computers influenced bazic megabasic s a i l b o a t north star basic was a dialect of the basic programming language for the intel 8080 microprocessor used on the north star horizon and available for purchase on other s 100 bus machines of the late 1970s 1 overview edit the basic interpreter was implemented by dr charles a grant and dr mark greenberg of north star computers inc one notable difference with other dialects of basic of the time was the way in which substrings were addressed using an array like syntax a concept sometimes referred to as slicing for example a 13 17 in north star basic corresponded to mid a 13 5 in microsoft basic derived dialects 2 this slicing technique is analogous to the one used in fortran and was introduced to basic with hp time shared basic and later used on atari basic and sinclair basic among others strings could be of any length limited only by available memory but had to be dim ensioned before use 3 while the language was very similar to other basics overall one interesting addition was the addition of an exit keyword to pop out of a for loop 4 different dialects of basic handled this in different ways the equivalent in integer basic and atari basic was pop fill could be used to fill a block of memory with a given value 5 most other differences were minor goto was supported but the alternate form go to was not computed gotos on x goto did not support gosub input allowed a prompt input type in your age a input1 worked identically to input but suppressed the following question mark 4 new became scr atch peek became exam and instr became match 6 the language used the backslash instead of a colon to delimit statements on a single line the language also added a number of direct mode commands like bye to exit basic and return to dos ren to renumber the lines in the program and null which defined how many nulls to print after pressing return to use as fill characters 7 version 5 was assembled for 8 digit floating point precision north star would re assemble the interpreter for customers with a different precision up to 14 digits 8 north star s first product was the fpb a floating point board which was usually used with north star basic the fpb a could add subtract multiply and divide with up to 14 bcd digits of precision it used a single 74ls181 as its alu it could speed up north star basic by a factor of ten for numerically intensive programs 9 some other dialects of basic were created that were based on and inspired by north star basic such as bazic a rewrite of north star basic taking advantage of the faster zilog z80 instructions 1 megabasic and s a i l b o a t a basic optimized for z80 and x86 ms dos references edit citations edit 1 2 richard milewski micro mike s bazic release 1 infoworld april 27 1981 manual 1977 p 11 manual 1977 p 10 1 2 manual 1977 p 8 manual 1977 p 9 david a lien the basic handbook compusoft pub 1981 manual 1977 p 5 manual 1977 p 2 northstar fpb a s100 computers retrieved 15 september 2025 bibliography edit north star basic version 6 pdf north star corporation 1977 archived from the original pdf on 2020 03 05 retrieved 2011 11 21 external links edit north star basic manual version 5 the user s guide to north star basic v t e dialects of the basic programming language list classic microsoft microsoft basic trs 80 basics level i level ii iii thomson basic 1 0 texas instruments ti basic calculators ti extended basic aka xbasic ti basic 83 hewlett packard hp time shared basic rocky mountain basic hp basic locomotive software locomotive basic mallard basic microcomputers atom basic integer basic north star basic scelbal minicomputers basic 11 business basic b32 data general data general extended basic southampton basic system wang basic time sharing computers basic plus vsi basic for openvms super basic call 360 basic other alphabasic astro basic basicode bal casio basic cbasic pbasic sds basic tiny basic ubasic zbasic extenders basic 8 simons basic super expander super expander 64 ys megabasic procedure oriented proprietary amigabasic amos basic asic basicx beta basic futurebasic grass liberty basic lse mapbasic mobile basic owbasic powerbasic purebasic smilebasic tiger basic true basic turbo basic wordbasic free and open source basic 256 basic4gl bbc basic v darkbasic indic basic open programming language sdlbasic smallbasic qb64 wxbasic xbasic xblite yabasic with object extensions proprietary autoit chipmunk basic glbasic lotusscript morfik powerbasic vba vbscript vb 5 for microsoft excel 5 0 vsto vsta embedded visual basic free and open source blitzmax freebasic microsoft small basic mono basic openoffice basic visual basic net roslyn rad designers proprietary ca realizer visual basic classic ns basic rapidq visual basic net mercury xojo free and open source b4x basic4android basic4ppc gambas winfbe visual fb editor defunct altair basic applesoft basic apple business basic atari basic atari microsoft basic atari st basic basic a basic xe basic xl basic programming atari 2600 bbc basic benton harbor basic chinese basic commodore basic color basic dartmouth basic disk extended color basic extended color basic family basic gfa basic gw basic ibm basic jr basic macbasic mbasic msx basic ms basic for macintosh qbasic quickbasic s basic sinclair basic stos basic superbasic ti basic ti 99 4a turbo basic xl vilnius basic retrieved from https en wikipedia org w index php title north_star_basic oldid 1319157180 category basic programming language family hidden categories articles with short description short description matches wikidata this page was last edited on 28 october 2025 at 03 16 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct developers statistics cookie statement mobile view search search toggle the table of contents north star basic add languages add topic