Thunder HEsl S2567 / PCI 64 - 66MHz

["Naert, Hans" <hans.naert@barco.com>]

Dear,
 
We are using the Thunder HEsl S2567,
We use the PCI 64bit 66Mhz slot.
 
When we put our card into the slot (32 bit 66MHz), the maximum bandwith is
1/4 of the theoretical,
our card (initiator who reads out of memory with the pci "read memory"
command) get a STOP from the motherboard after a read transfer of 4 words.
With the pci  "memory read multiple" command the bandwith is 1/2 of the
theoretical, but we get a stop after 16 words.
 
We tried with a 64bit 66Mhz card but the result are the same.
 
What must we do to get a greather bandwith.(to make that we don't get a STOP
and that we can transfer data until our latency timer expires)
We have also the latenscy timer of the bridges changed in F8 (the latency
timer value of our card is also F8).
 
Can you help me?
 
Greetings,
 
Hans Naert 
R&D Engineer 
Barco Graphics, Industrial Printing 
 
-----Original Message-----
From: Naert, Hans 
Sent: Wednesday, May 02, 2001 9:58 AM
To: 'mattv@tyan.com'; 'techsupport@tyan.com'
Subject: Thunder HEsl S2567 / PCI 64 - 66MHz


Dear,
 
We are using the Thunder HEsl S2567,
We use the PCI 64bit 66Mhz slot.
 
When we put our card into the slot (32 bit 66MHz), the maximum bandwith is
1/4 of the theoretical,
our card (initiator who reads out of memory with the pci "read memory"
command) get a STOP from the motherboard after a read transfer of 4 words.
With the pci  "memory read multiple" command the bandwith is 1/2 of the
theoretical, but we get a stop after 16 words.
 
We tried with a 64bit 66Mhz card but the result are the same.
 
What must we do to get a greather bandwith.(to make that we don't get a STOP
and that we can transfer data until our latency timer expires)
We have also the latenscy timer of the bridges changed in F8 (the latency
timer value of our card is also F8).
 
Can you help me?
 
Greetings,
 
Hans Naert 
R&D Engineer 
Barco Graphics, Industrial Printing