Looking for--data on ProLog SBCs

Rich, I have a s***load of STD BUS boards and DOCS including 4 or 5 complete systems with 8" disks. Alas, no hard drive based systems. If there's any specific info, you're looking for, I'd be glad to look it up for you? Unfortunately, I don't have a scanner or digital camera so bear with me :-( The 7805 is a SBC that may or may not need any additional support cards. They were mostly used in industrial or dedicated controllers and in fact many are still in use today. Most of those boards (although not all) have the processor, serial I/O, RAM, ROM, and timing circuitry all on one board. Being controllers, there were a wide range of IO options available. Everything from ADC/DAC converters, 16, 32, 48, 64 bit parallel interfaces, OPTO 22 and relay drivers, temperature sensors, DISK controllers, etc... Certainly the two additional cards that you have fit that category. With all the IO options, they make great platforms for home automation projects. Most of the external cards have jumpers that can be used to configure the address range (ports) for the cards. Most cards would work with any ports as long as there wasn't an addressing conflict. With a range of 255 ports, the system was very flexible. I don't recall for sure but, I think STD standard only requires GND, +5, +12, and -12 volts. If that's the case, you should be able to wire a regular PC power supply to the backplane. A full rack which could be 20 or more cards will certainly suck some power but the few cards that you have would be well within the capacity of a small PS. If you trace the lines from the 1488 and 1489 chips to the header connector, you should be able with a little experimentation figure out how to connect a dumb terminal. If not, I'll look it up for you. As far as software, most of the controllers either had the application burned in ROM or they would boot from an external disk (often CPM). The BIOSs may be specific to a particular variant of the OS so, not all of them will work together. IE: A microsys BIOS will probably not work with a DEC version CPM. A prolog BIOS may not work with a microsys boot disk, etc... Let me know what specific info you need. See ya, Steve _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com