This is likely not really the right place to ask this, but nobody else in other groups has a clue about a 16bit ISA board I have. It is as follows: 16bit ISA board for IBM compatiblle 16mhz MC68020RC16B and MC68881RC16A processors 16 30 pin memory modules soldered directly to the circuit board each module contains 9 41256-120 RAM chips (NEC 8608E621) 1 DB-9 and 1 DB-25 connector (both male) on the rear cover plate Markings: "DSI-780" on the front, and "Rev B Copyright 1986 Definicon" on the rear There is also an empty socket, the same size as the 68020 socket. I aquired this board from a pile of misc. circuit boards that was being tossed out a couple of years ago, and have not been able to find out any information on it. Any info at all would be most helpful. To me, it appears to be some kind of hardware emulator for an Apple or Mac. I know in the late 80's there were a number of Apple II emulator boards for the PC running around, as I recall seeing them for sale in the Radio Shack catalogs of the period. Any help would be greatly appreciated. Jeff jeffh(a)eleventh.com -- --------------------------------------------------------------------- Sent from an Amiga 3000..the computer for the creative mind! --------------------------------------------------------------------- Collector of classic home computers: Amiga 1000, Atari 800, 800XL, and Mega-ST/2, Commodore C-128D, Plus/4 and VIC-20, IBM 5155, Kaypro 2X, Osbourne Executive Radofin Aquarius, Sinclair ZX-81, TI-99/4A, Timex-Sinclair 1000, TRS-80 Color Computer-3 and Model 4, plus Atari Superpong and 2600VCS game consoles.