[X] When you check Emulation, Borland Pascal detects whether your computer has an 80x87 coprocessor, and uses the coprocessor if it's there.

If the coprocessor is not present, Borland Pascal emulates the 80x87.

[ ] When Emulation is not checked, Borland Pascal does not link with the 8087 emulator.

This option is not available if Target platform options is set to Windows.

Emulation is equivalent to {$E}.

See also:

 Numeric Processing  [X] 8087/80287