ID Number: Q34069
3.00 4.00 5.00 5.10 6.00 6.00a 6.00ax 7.00 | 5.10 6.00 6.00a
MS-DOS | OS/2
Summary:
Uninitialized global data is placed in the default data segment,
DGROUP, in tiny, small, and medium memory models or if the data is
declared to be near. Initialized global data is placed in the default
data segment for all memory models unless /Gt is used and the data is
not declared to be near.
In C versions 5.1 and earlier, data is declared to be near with the
near keyword. In C 6.0, 6.0a, 6.0ax, and C/C++ version 7.0 the keyword
is changed to _near.
Declaring the data to be near ensures that the variable is referenced
with a 16-bit address, as opposed to the far 32-bit addresses, which
will make variables defined with the near keyword faster to access.
Additional reference words: 5.00 5.10 6.00 6.00a 6.00ax 7.00