Category: DOS extenders
Flags: available only in protected mode
INT 21 - Phar Lap 386/DOS-Extender - SET REAL- & PROTECTED-MODE INT VECTORS AX = 2507h CL = interrupt number DS:EDX = CS:EIP of protected-mode interrupt handler EBX = CS:IP of real-mode interrupt handler Return: CF clear Notes: interrupts are disabled until both vectors have been modified this function is also supported by FlashTek X-32VM SeeAlso: AX=2504h,AX=2505h