Hello, Does anyone out there know where I could find the specifications and related info on the PC/AT bus. I need the pin-out for the board the plugs into the bus. Radio Shack sells the PC/XT boards, but I need to use this device on one of todays machines. Not an 8088. Also needed any tips/hints on reading and writing to and from the bus. I work with Visual Basic 3.0 Pro for the computer end of my work. Any info will be greatly appreciated. Brent Pollock Customized Controller Solutions (Embedded Control and Windows based interfaces) ccs@ewol.com