Int 21/AX=2509h

FlashTek X-32VM - GET SYSTEM SEGMENTS AND SELECTORS

AX = 2509h

Return:
CF clear
EAX high word = default DS
AX = alias for 16-bit data segment
BX = real mode code segment
EDX high word = selector covering full 4GB address space
DX = default SS
ESI high word = PSP selector
SI = environment selector

Category: DOS Extenders - Int 21h - F

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