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SERVERWORKS HEsl /TYAN/SUPERMICRO

Hello,

Now I have tried 64bit 66Mhz PCI,
with a TYAN Thunder HEsl S2567 en with a supermicro with the same chipset, 
are there other mainboards with 64bit 66Mhz PCI and an other chipset?

when I do normal memory reads, I get a stop after 4 words,
When I using multiple memory read ,I get a stop after 20 words.
The bandwith is then 300Mbyte/s.
With memory writes 500Mbyte/s

How can I make that the motherboard STREAM the data, so that the burstlength
is 248 and not 4 or 20?

In the intel chipset was a bug , if you write 0x80 in adress 0x50 in config
space of the bridge , then streaming was possible.
Is there such an bit in the SERVERWORKS HEsl chipset?

greetings,