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- Path: sparky!uunet!mcsun!sunic!psinntp!psinntp!parlan!richardw
- From: richardw@hub.parallan.com (Richard Walter)
- Newsgroups: comp.arch
- Subject: Re: What happened to the UCSD p-System?
- Message-ID: <8qmiuB1w164w@hub.parallan.com>
- Date: Thu, 19 Nov 92 18:14:42 PST
- References: <1992Nov17.162428.15881@coe.montana.edu>
- Organization: Parallan Computer, Mountain View CA
- Lines: 35
-
- uesu03@giac1.oscs.montana.edu (Lou Glassy) writes:
-
- > Is the idea of running code on virtual machines dead?
- > Found a couple of old books yesterday on the p-System and
- > MINT.
- >
- > The possibility of taking my binary from machine to machine,
- > (with possibly different physical architectures), and having
- > it run without dinking, is an intriguing one.
- >
- > Is any work going on in this area? Or does performance pay
- > more than portability?
- >
- Firstly, there is a commercial package called "Soft-PC" which runs on
- Macintoshes and emulates a PC. Also, isn't this one of the basic
- ideas of Windows NT? Since NT is supposed to be platform independent,
- if you are running on an Alpha and then start-up an application compiled
- for the Intel x86 family, won't NT really startup an x86 emulator and
- run the application inside of that?
-
- I guess that these aren't really p-code systems. But then again, if
- you run the same p-code on all platforms, then all systems will suffer
- a performance hit, while if you compile it for one system and run under
- emulators on all others, then at least the one system running native
- code will have good performance while the others take the hit.
-
- Also, I read recently (within the last 6 months) in some trade journal
- (Info-world, I think) that Microsoft is writing some windows application
- (I think it was a database) in p-code for some reason. (I know that
- this last bit sounds really, really hazy, but I do know that I saw
- the headline with something like "Microsoft brings back P-Code" (there
- I go being vague again...:)).
-
- -Richard Walter
- richardw@parallan.com
-