Check out http://www.m-sys.com Steve -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of William K. Borsum Sent: Wednesday, July 21, 1999 5:28 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 &