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Encyclopedia > Microsoft BASICA

Microsoft BASICA (short for "Advanced BASIC") is a simple disk-based BASIC interpreter written by Microsoft for PC-DOS. BASICA allows use of the ROM-resident BASIC on the PC while DOS is loaded (the ROM BASIC itself runs when nothing is loaded when booting) and adds functionality such as file access and storage of programs on disk.


Lineage

BASICA's development environment is very similar to that of the Dartmouth Time Sharing System associated with Dartmouth BASIC. In both, a user enters instructions at a prompt. If an instruction begins with a line number (used to sequence the instructions and as a label), it is stored as part of the current program. If not, it is executed immediately.


BASICA's successor was Microsoft GW-BASIC, which was very similar but didn't use any ROM-based BASIC routines.


Example session

 The IBM Personal Computer Basic Version A2.00 Copyright IBM Corp. 1981, 1982, 1983 Ready. > 10 PRINT "Name: "; Ready. > 20 INPUT "", A$ Ready. > 30 PRINT A$; ", there are"; LEN(A$); " letters in your name !" Ready. > RUN Name: John John, there are 4 letters in your name ! Ready. > 

  Results from FactBites:
 
Microsoft BASICA interpreter (422 words)
Microsoft BASICA is a simple disk-based BASIC interpreter written by Microsoft for the IBM-PC to be distributed with PC-DOS.
BASICA added some features to the language which the ROM by itself would not be capable of such as filesystem access statements and the ability to save your work at the end of a session.
The BASICA development environment was very similar to the integrated development environment used by Dartmouth BASIC.
Microsoft BASICA in TutorGig Encyclopedia (246 words)
BASICA allows use of the ROM-resident BASIC included with early models of IBM's PC while DOS is loaded (the ROM BASIC itself runs when nothing is loaded when booting) and adds functionality such as file access and storage of programs on disk.
BASICA's development environment is very similar to that of the Dartmouth Time Sharing System associated with Dartmouth BASIC.
BASICA's successor was Microsoft GW-BASIC, which was very similar but didn't use any ROM-based BASIC routines and thus can run on virtually any IBM compatible system.
  More results at FactBites »

 
 

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