Hi there, I just returned from and an Embedded Solutions conference and I picked up some literature on a device that might be what you're looking for. It's called chipDisk and it's an IDE compatible Flash-Disk. The largest one they specify on their literature is 80 MB so maybe you could use two. It states that it is absolutely insensitive to Percussion, vibration, concussion, temperature variation and magnetic fields. Their web address is http://www.jumptec.de. SanDisk also makes flash disks that have an IDE interface. Anyway hope this helps, Barry -----Original Message----- From: William K. Borsum [mailto:borsum@DASCOR.COM] Sent: Wednesday, July 21, 1999 3:28 PM To: PICLIST@MITVMA.MIT.EDU Subject: IDE or Memory Card use for high speed data storage Greetings: I've been following the PIC to FDC conversations a bit, and have a related question: I have an application where I need to log data at the rate of up to 200 K-bytes per second, to a depth of 120-160 Mega-bytes. Part of the problem is that it is memory is broken up into a series of ring buffers that are sequentially over-written till an event occurs, so flash or eeProm with a short finite life--or holes in the memory because of bad blocks--won't work. Only viable alternative I've come up with is sRam, but the largest chips only appear to be 512Kx8, which means 200+ chips to get the total memory I need. Oh yes--environment sees shock and vibration to 100+ G's, and the whole thing needs to fit in a can about 3.5" in diameter. Question: does anyone have a sneaky alternative that will work--like a micro-hard drive that will survive? If so, how would the interface work? Has anyone implemented an IDE interface, or interface to a sRAM PCMCIA card on a PIC? Kelly ************************************************************************ **** ******** All legitimate attachments to this email will be clearly identified in the text. William K. Borsum, P.E. OEM Dataloggers and Instrumentation Systems &