DOS / Interrupts / Int 2F / 4B/03


                    TASK SWITCHING - Allocate Switcher ID

Input	DOS1	N	DOS2	N	DOS3	N	DOS5	Y	Output
AX	4Bh		03h						AX
BX	0				Identifier (01h-0Fh, 00h=Error)				BX
CX									CX
DX									DX
ES:DI	Service Function Handler								CF