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- Path: sparky!uunet!pipex!warwick!uknet!bnr.co.uk!bnrgate!corpgate!crchh327!bnr.ca!grier
- From: grier@bnr.ca (Brian Grier)
- Newsgroups: comp.sys.atari.st.tech
- Subject: Re: Falcon BUS..
- Message-ID: <1992Nov05.142017.21039@bnr.ca>
- Date: 5 Nov 92 14:20:17 GMT
- Sender: news@bnr.ca (News on crchh327)
- Organization: Bell Northern Research
- Lines: 39
- Nntp-Posting-Host: 131.253.206.80
-
- > 1) What is the speed of the Falcon's memory (Somebody said it had 0 wait
- > states which seems to imply 16MHz, but they may have been wrong)
-
- The memory, as I said, is claimed to be 0 wait state memory. The question
- is is the memory syncronous or asyncronous?
-
-
- > 4) Is the data bus between the memory and the 68030 16 or 32 bits wide (There
- > seems to be an argument going on about this).
-
- Atari claims 32 bit wide memory.
-
-
- > 5) Why does the benchmarks that I have seen posted here only indicate an
- > approx 3x speed increase and real-world tests (excluding any disk access)
- > only twice as fast? If the data bus is twice as wide, the memory twice as
- > fast, the processor at least twice as efficent and running at twice the clock
- > speed it should be more like 10 times the speed.
-
- My best guess is that when people get to the Falcon in the REAL world
- they increase the number of bits per pixel, causing a lot of extra time
- to be spent drawing things, like letters and numbers. You will pay a big
- price in performance for more bits per pixel on Atari systems. Refer to
- the description of pixel memory in either the developer docs or the Abacus
- internals guide.
-
- On an unrelated topic...
-
- Yesterday I said would see if you could drag a HD icon to a floppy icon
- under NeoDesk. The answer is yes. NeoDesk informs you that it can only
- perform a file copy, sector copy is not available. I do not have access
- to a floptical so I can not verify if NeoDesk will recognize that a 720K
- or 1.4meg floppy in a floptical has the same format as it does in a
- standard floppy drive.
-
-
- Brian, WS1S
- Bell Northern Research
- Research Triangle Park, NC
-