Get Descriptor

Call With

AX = 000BH
BX = selector
ES:(E)DI = selector:offset of 8-byte buffer

Returns

if function successful
Carry flag = clear
and buffer pointed to by ES:(E)DI contains descriptor

if function unsuccessful
Carry flag = set
AX = error code

8022H

invalid selector

Notes

• 32-bit programs must use ES:EDI to point to the buffer. 16-bit programs should use ES:DI.

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