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Q60964: NO87 Environment Variable Echoed to Screen When Run

Article: Q60964
Product(s): See article
Version(s): 4.00 4.00b 4.50
Operating System(s): MS-DOS
Keyword(s): ENDUSER | SR# S900406-108 B_BasicCom | mspl13_basic
Last Modified: 14-MAY-1990

The QB.EXE and QBX.EXE environments echo to the screen the string
stored in the environment variable NO87. This is to notify you
whether or not the math coprocessor (if one exists) will be used by
these environments in floating-point calculations. NO87 must be set to
null if the coprocessor is to be used; any other string value turns it
off. To set the NO87 environment variable, execute the following
statement from the DOS command line:

   SET NO87=[string-expression]

Note: <string-expression> would be entered only if the coprocessor
were not to be used.

This information applies to Microsoft QuickBASIC Compiler versions
4.00, 4.00b, 4.50 for MS-DOS, and to Microsoft BASIC Professional
Development System (PDS) version 7.00 for MS-DOS. Furthermore, EXE
files compiled in all Microsoft languages that use an IEEE emulation
math package (BASIC, C, Pascal, FORTRAN) will exhibit the same
behavior when run.

For example, enter the following at the DOS command line:

   SET NO87=OFF

Then run QB (or QBX). The word "OFF" will be displayed on the next
line.

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