Get Selector Increment Value
The DPMI functions Allocate LDT Descriptors (Int
31H Function 0000H) and Allocate DOS Memory Block (Int 31H Function 0100H) can allocate an array
of contiguous descriptors, but only return a selector for the first
descriptor. The value returned by this function can be used to
calculate the selectors for subsequent descriptors in the array.
Call With
AX = 0003H
Returns
Carry flag = clear (this function always succeeds)
AX = selector increment value
Notes
- The increment value is always a power of two.