DOS / Interrupts / Int 2F / 12/1A


            DOS INTERNAL SERVICES - Get Drive Code from Path Name

Input	DOS1	N	DOS2	N	DOS3	Y	DOS5	Y	Output
AX	12h		1Ah				Drive Code		AX
BX									BX
CX									CX
DX									DX
DS:SI	ASCIIZ Path Name				Advanced past Drive Spec				DS:SI