From: "William Layer" &lt;william.layer(a)comcast.net&gt; [details on the SD System S-100 card set in an Altair 8800 chassis, with assorted other cards] "Randy McLaughlin" posted: Herb Johnson has some great stuff on your disk controller you need to get: http://retrotechnology.com/herbs_stuff/s100.html ----------------------- Thanks for the referral, Randy. In fact I have manuals on most of the cards that William mentioned, and I've emailed William accordingly. As Randy posted, it looks to me like there is not much left of the Altair, in the Altair! The SD System stuff probably ran the CP/M or SDOS system on those disks with that system. It would be reasonable, in fact, to get *another* S-100 box and put those SD System cards in THAT; and to see about rebuilding the remaining, actual MITS cards and the MITS chassis seperately. The MITS might need a very old memory card to work with that 8080 processor and front panel, due to some bus differences. But it's all in what the new owner wants to do and what resources he obtains to do so. Herb JOhnson Herbert R. Johnson, voice 609-771-1503, New Jersey USA <a href="http://retrotechnology.com/herbs_stuff"> web site</a> <a href="http://retrotechnology.net/herbs_stuff"> domain mirror</a> **MY "njcc.com" site & email is EXPIRED ** my email address: herbjohnson ATT comcast DOTT net if no reply, wait & try: hjohnson AAT retrotechnology DOTT com "Herb's Stuff": old Mac, SGI, 8-inch floppy drives S-100 IMSAI Altair computers, docs, by "Dr. S-100" -- Herbert R. Johnson, voice 609-771-1503, New Jersey USA <a href="http://retrotechnology.com/herbs_stuff"> web site</a> <a href="http://retrotechnology.net/herbs_stuff"> domain mirror</a> **MY "njcc.com" site & email is EXPIRED ** my email address: herbjohnson ATT comcast DOTT net if no reply, wait & try: hjohnson AAT retrotechnology DOTT com "Herb's Stuff": old Mac, SGI, 8-inch floppy drives S-100 IMSAI Altair computers, docs, by "Dr. S-100"