INT 21 - Novell NetWare 4.6, Alloy NTNX - RETURN SHELL VERSION
AH = EAh
AL = return version environment string
00h         don't return string
nonzero     return string in 40-byte buffer pointed to by ES:DI
Return: buffer filled with three null-terminated entries:
major operating system
version
hardware type
Return: AH = operating system (00h = MSDOS)
AL = hardware type
00h IBM PC
01h Victor 9000
BH = major shell version
BL = minor shell version
CH = (v3.01+) shell type
00h conventional memory
01h expanded memory
02h extended memory
CL = shell revision number


21EA - Novell NetWare 4.6, Alloy NTNX - RETURN SHELL VERSION