DOS/32 Advanced DOS Extender - Programmer's Reference

2.05 - DPMI function 0006h - Get Segment Base Address

Returns the 32-bit linear base address from the descriptor table for the specified segment.


In: AX = 0006h
BX = selector

if successful:
CF clear
CX:DX = 32-bit linear base address of segment

if failed:
CF set
AX = error code

8022h - invalid selector


a) Client programs must use the LSL instruction to query the limit for a descriptor. Note that on 80386 machines, the client must use the 32-bit form of LSL if the segment size is greater than 64 KB.


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