INT 21 - Phar Lap 386/DOS-Extender - CHANGE SEGMENT ATTRIBUTES
AX = 2514h
BX = segment selector of descriptor in GDT or LDT
CL = new access-rights byte
CH = new use-type bit (USE16 or USE32)
Return: CF clear if successful
CF set on error
EAX = error code
09h invalid selector in BX
SeeAlso: INT 31/AX=0009h

See also: 212515

212514 - Phar Lap 386/DOS-Extender - CHANGE SEGMENT ATTRIBUTES