Allocate LDT Descriptors

Call With

AX = 0000H
CX = number of descriptors to allocate

Returns

if function successful
Carry flag = clear
AX = base selector

if function unsuccessful
Carry flag = set
AX = error code

8011H

descriptor unavailable

Notes

• If more than one descriptor was requested, the function returns a base selector referencing the first of a contiguous array of descriptors. The selector values for subsequent descriptors in the array can be calculated by adding the value returned by Int 31H Function 0003H.

• The allocated descriptor(s) will be set to "data" with the present bit set and a base and limit of zero. The privilege level of the descriptor(s) will match the application's code segment privilege level.

• Refer to the rules for descriptor usage in Appendix D.