Category: DOS extenders
Flags: available only in protected mode
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: AX=2515h,INT 31/AX=0009h