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X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 21 - novell netware 4.6 - return shell version
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INT 21 - Novell NetWare 4.6 - 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
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