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From: dan@rna.UUCP (Dan Ts'o)
Newsgroups: net.unix
Subject: More Microvax/Ultrix questions...
Message-ID: <334@rna.UUCP>
Date: Sun, 2-Dec-84 02:17:42 EST
Article-I.D.: rna.334
Posted: Sun Dec  2 02:17:42 1984
Date-Received: Tue, 4-Dec-84 19:50:51 EST
Organization: Rockefeller Neurobiology, NYC
Lines: 22


	There are two versions of the Microvax I, the KD32-AA (M7135)
which has the F+G floating point microcode and the KD32-AB (M7135-YA)
which has the F+D floating point microcode.
	I understand there are also two versions of Ultrix-32 for the
Microvax, one for each, presumably emulating the missing floating point
instructions, right ?
	Since Unix only uses F+D, the KD32-AB is preferable since
presumably the microcode runs faster than the software emulation, right ?
Does MicroVMS (and VMS) use F+G instead ? KD32-AA's are generally what
you get unless you specifically ask.
	What is the situation with the Microvax II ? The "Microvax
architecture" only supports F+G (right?)

					Cheers,
					Dan Ts'o
					Dept. Neurobiology
					Rockefeller Univ.
					1230 York Ave.
					NY, NY 10021
					212-570-7671
					...cmcl2!rna!dan