home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.sys.atari.st
- Path: sparky!uunet!pipex!warwick!dcs.warwick.ac.uk!leo
- From: leo@dcs.warwick.ac.uk (Leo Hendry)
- Subject: Re: New TOS versions?
- Message-ID: <1992Nov23.215253.28684@dcs.warwick.ac.uk>
- Sender: news@dcs.warwick.ac.uk (Network News)
- Nntp-Posting-Host: stone
- Organization: Department of Computer Science, Warwick University, England
- References: <1992Nov19.024438.22369@microsoft.com> <1992Nov20.160320.11380@dcs.warwick.ac.uk> <1992Nov22.011545.3921@microsoft.com>
- Date: Mon, 23 Nov 1992 21:52:53 GMT
- Lines: 26
-
- In article <1992Nov22.011545.3921@microsoft.com> darekm@microsoft.com (Darek Mihocka) writes:
- >
- >I'm not sure what you meant by "sub #1000 PC". Is that 1000 dollars or 1000 pounds?
-
- Sorry, I realised yesterday that this was ambigious (you know what I mean) - I
- meant 1000 pounds.
-
- >Right now you can buy 25 Mhz 486SX machine for under $1000, and that will give
- >you roughly 8 Mhz 68000 emulation. You can still use the real Quick ST or Warp 9
-
- Today I saw a 25MHz 486SX with VGA Colour monitor and software for 999
- pounds inclusive, so I guess either way I'm wrong now!
-
- >running on Gemulator to give you the kind of speed ups you get on a real ST,
- >since Quick ST does things in less code, Gemulator has to emulate less code and
- >thus speeds up. Same reason it speeds up a real 68000.
-
- Ever thought of implementing some kind of "cache" of the most recent 386 code
- you have converted from 68000? At a simple level you could keep a record
- of the 386 translations for the last 100 68000 instructions executed and if
- you came across a backward branch instruction you could jump back into proper
- 386 code - this would speed up loops in a big way.
- Since most 386 machines have caches, there should be no self-modifying code
- to f things up.
-
- - Leo
-