| There are several boards which support on board memory, most notably
the G-Forces from GVP. They have up to 8MB of *40* ns memory, to fully
take advantage of the burst mode feature of the 68040. The 2000
G-Force I believe is coming shortly and has a SCSI controller as well
(which is the fastest available DMA for the Amiga, I think).
Check out the January Amiga World issue, which has a whole section of
reviews on 8 (eight) 68040 boards. I think two are only for the 3000,
but it's still a good article, and shows benchmark tests.
If you'd like I'll send you my copy--I'm done with it--just give me
your interoffice mailstop and I'll get it to you ASAP.
Mike
P.S. Interestingly enough, one of the benchmark tests was a Lightwave
scene. In the column for the Progressive Peripherals 3000 68040 board,
there was N/A. I guess that the Amiga World techs don't know that
Lightwave is *software.* ;-)
|
| Hi,
I have a fusion 040 board in my A2000.
The board is populated with either 1Meg SIMM for a total of 8Meg or
4 Meg SIMM for a total of 32 Megabyte of 32 bits memory. The speed of
the chips are 80 nSec.
I do not know if the GVP memory SIMMS would fit in the board but from
what I can remember from a usenet discussion they have their own
standards.
Since I bought the board there was 3 changes in the software from RCS
improving the speed between the 16 bit interface and the 68040 and, 2
hardware changes.
The original speed of the board was 25Mhz, it is now 28Mhz and they
have replace the heat generating PAL for a new device call a GAL.
The biggest problem I had was that the maximum speed on a DMA disk
transfer was about 100K versus 700K with a 68000. This is not really
a problem with the board has such but is cause by the fact that the
memory is not in the 9 Meg addressable range and that the Hardframe
(or any SCSI DMA controller) cannot talk to the memory directly.
I must say that with their latest changes they are doing about 600K
with a 2091 and a Quantum drive.
There is a connector on the module for the 32 bit bus and RCS is
currently working on a SCSI-2 interface that would do very fast
DMA transfer.
But, I bought a TrumpcardPro non-DMA controller and I have about
800 to 900K of transfer.
They are also working on some "virtual chip ram" that would give from
2 to 4 MByte of chip ram.
I will post the results of the tests that AW did but, using my board
you will be able to see for yourself the numbers.
Hubert.
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