Hi, I found a solution to my problem of data corruption on my AMD alchemy Db1550: I divided the SDRAM bus frequency by 2. So I get the following set of freq: CPU core = 396 Mhz System bus = 198 Mhz SDRAM bus = 99 Mhz instead of 198 Mhz The PCI clock is 64 Mhz. To do this I simply use the boot monitor YAMON v2.25 provided by AMD (downloaded from their website). And set the position of the rotary switch to 2. I don't really know if the SDRAM bus frequency was the root issue or if it simply slows down the transfer and thus the problem has not enough time to appear...but I test the copy during all the night and the test doesn't report any error :) Sergei, could you tell me your frequency configuration that you use on you au1550 board, please ? Thanks David Sanchez
