Hi, i recently got a MAI Basic Four 210 from the Netherlands. The CPU now powers up, have not yet tried the 14" Piram harddisk. I would like to know if the CPU is working. It seems to be based on a microdata 1600 but equiped with dram and cmos ROMs. The machine has switches were it can be set to boot standard/alternate the tape drive has a capstan roller transformed to liquid and i have not yet tested the disk i would like to know how to boot from a terminal. I have not yet read the microcode proms nor have i checked if they are soldered or on sockets. Does someone out there have access to the cpu manuals that are stated in the service manual ? 1300 CPU Technical Manual, Document No. SM 1200 M1300 Series CPU Organisation and Description Reference Manual Pictures from the machine are here: http://www.ardiehl.de/basicfour/mai210/pics/small/ and the manuals are on bitsavers in pdf/mai, the service manual also contains the cpu schematics, the ones for the tape controller and the disk controller are included in the tape / disk service manuals. What do you think are the chances to get the disk up and running. (since i have no tapes of other software) All seems to be stored dry, no rust, nor a lot of dirt in the machine. Seemd to be powered on the last time more than 15 years ago. Armin