[partial-reconfig] SYSACE problems on ML402

Subject: [partial-reconfig] SYSACE problems on ML402

From: "Paolo Furia" <paolo.furia@xxxxxxxxx>

Date: Wed, 27 Aug 2008 16:06:51 +0200

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Hi all,
I'm working on a dynamically reconfigurable project on ML402 (virtex-4
sx35) and, for this, I have to load partial bitstreams from a Compact
Flash. I successfully generated a system.ace file that works fine and
configure my fpga at turn on. The problems come when I try to load a
partial bitstream stored on the CF: it always isn't possible and the
error led turn on.
I mainly use sysace_fopen and sysace_fread functions (I also tried using directly the function XHwIcap_CF2Icap provided by Xilinx in his examples); only reading 2048 bytes it seems to read something, but not all.
I tried to open and read an image .bmp, using sysace_fopen and
sysace_fread, and it works. The problem comes with bitstreams
(both .bit and .bin).
I have this problem both in my reconfigurable system and in a normal
system based on MicroBlaze.

Have you any suggestion? Has anyone successfully reconfigured virtex-4 devices using a bitstream stored on a CF? I would be grateful for your help.

Paolo Furia