Int 13 Fn 3B U - Quickcache Ii V4.20 - Enable/disable ??? [c] AH = 3Bh AL = new state of ??? (01h enabled, else disabled) Return: AX = status (0000h successful) Note: is affected by the flag reported at offset 05h of the system info returned by AH=30h, and sets the flag at offset 06h See Also: AH=3Ch