Going through a box of disk interface cards, I ran across a couple of these DTC 520As. Cursory examination shows a 50-pin connector (J4) with two termination resistors (220/330), two 20-pin connectors (J2, J3) which are presumably analog data for two ST506 drives and two 34-pin connectors (J1 and J9). I would expect that J1 is the control cable that goes with J2 and J3. I suspect that J9 is for floppies. The major chips are two 8255s, one 8085, one DTC-037, one NEC D765, one FDC-043, one DTC MSA 2827G, an AMD P8353, and an AMD AM9517. There are several chips with the numbers covered by type- written numbers, PALs and ROMs, no doubt. There are 8 LEDs in a row by the power connector and an 8-position DIP switch. Can anyone shed any additional light on this device? Knowing what this was expecting to hook up to and how to set the DIP switches would be a great help. Many thanks, -ethan ===== Infinet has been sold. The domain is going away in February. Please send all replies to erd(a)iname.com __________________________________________________ Do You Yahoo!? Thousands of Stores. Millions of Products. All in one place. Yahoo! Shopping: http://shopping.yahoo.com