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- On Wed, 20 Mar 1996, Magnus Kollberg wrote:
-
- > > I have to say many Falcons have great problems with CPU at 40 MHz.
- > > Usually many of them have to slow down to 36 MHz, like me and my friend. I
- > > wonder how many Falcons can work at 50 MHz...
- >
- > Yes, I guess 40 or 50MHz is a little to much for the bird... after all it was desinged
- > for 16MHz so they didn't need to use higrated components. I have also been told that
- > Motorola makes such a good chips that alsmost every 030 is rated above 32MHz. They
- > can't make such bad 030 chips that can only handle 16MHz. :-)
-
- Well, the MC68030 inside a Falcon can easily run at 60 MHz, I think. The
- main problem is in bad design of DMA and 68030<->68000 bridge.
-
- > > Well, I have been always told that the Blitter (which is part of Combel
- > > so can't be removed) is not able to run at more than 20 MHz, so there's
- > > no way to speed up the bus at more than 20 MHz.
- >
- > I have been told that it can handle up to 25MHz, that is absolutly the maximum
- > and I guess that all can't handle that, so 20MHz is the most used and it will
- > work with all falcons.
-
- Well, and _I_ have been told that 20 MHz is the edge. We'll see what BSS
- and its new accelerator do about it.
-
- > > According to some infos there's probably a way, but I can't imagine it.
- > Replacing the blitter/combel with your own. ;-)
-
- Hmm, the Combel is the heart of Falcon. There's everything from good old
- ST ;-)
-
- > > ? Maybe you mean how fast would be BM with Magnum and BSS ? I don't think
- > > Magnum card can handle more than 16 MHz on the bus.
- >
- > No, what I ment was that I wonder how much faster the FX-card will be than the
- > lowcost BSS card. 30 pounds is _very_ cheap and 25MHz bus might compensate the
- > loss of fast-RAM. :-)
-
- Well, it really might! We'll see.
-
- Petr
- --
- +--------------------------------------------------------------------------+
- | stehlik@leo1.zlin.vutbr.cz -- 2:421/36@fidonet.org -- 90:1200/2@nest.ftn |
- | Falcon030/FPU/FX/36MHz/4ST+8FX RAM/IDE 1080 MB running TOS or Linux-m68k |
- | MegaSTE/16MHz/4MB RAM/240MB/Riebl card/USR DS 16k8 running Joy BBS 24hrs |
- +--------------------------------------------------------------------------+
-
-