Does anyone have the pinout of the HP 1820-1691 microprocessor (HP may have called it a nanoprocessor in some manuals!) to hand? This is a custom chip (AFAIK), 40 pin ceramic DIL package that was used as a controller in a number of HP devices in the late 1970s. It was certainly used in the HP 98034 HPIB interface and HP 98035 clock (for the HP9825 calculator), and may have been used in other peripherals (HP 9885 disk drive, some plotters/printers?). If anyone has a pinout (or a schematic of a device that uses said processor), could they post (or e-mail me) a text file giving the names of the signals on as many pins as possible. Thanks in a advance for any help -tony