host initiator not recognizing retries

["Tom Curran" <tom_curran@memecdesign.com>]

Hello,

I am using the Insight Electronics Xilinx 2S200 PCI32 development board and
I have a design loaded that misbehaves in my older Compaq (circa 1997) PC.
In other (newer?) machines the same design in the same card behaves
perfectly.  In this case the OS is the same among the PCs being tested --
Win2k.  My problem is that the host initiator, via an app on the command
line, initiates a read from SDRAM on the card.  The target then issues a
retry (STOP# is asserted while IRDY# and DEVSEL# are asserted.  TRDY# is
not ever asserted).  The problem I am having is that the host initiator is
not properly recognizing the retry, and reports the bogus data present on
the bus to my application.

Many other PCI designs work on this card, so I cannot fault the card.  The
PC, chipset, etc. is of course suspect.

Any ideas?  Any help is appreciated.

Many thanks,
Tom

---
Tom Curran
Memec Design Services -- Sacramento
www.memecdesign.com
www.insight-electronics.com
em: tom_curran@memecdesign.com
ph: 530.885.7784
fx: 530.887.5118
vm: 800.688.7718 x3603