old memory boards?

Hi. I'm a small-time collector interested in older unix machines, though I think I'd be more interested in micros if I had more room than my apartment provides. I was picking up a load of Sun VME-bus equipment today and ran across some memory boards. These are definitely not for the suns, neither multi-bus nor vmebus. The boards are perhaps 12"x16" and are populated with what I presume to be memory chips (AMD 21-17559-01 / 8333EMM) in 16 banks of 9 chips each. The connector along the back has 6 distinct edge-card pieces, with 18 contacts per connector per side. All of the boards appear to be more or less of the same nature, but one is manufactured by Motorola, and 4 have digital markings. Along the back of three of the digital boards, there are two metal protrusions. One says AM, the other M8210. The other digital board is AZ M8210, and it has a lot of Mostek chips that I would guess are 16kbit 300ns chips . . Does anyone know what machine used these boards? The sun equipment I salvaged was sadly without CPU board or power supply but I did manage to grab 2 8mb boards and a bevy of SCSI and SMD controllers. I guess I can add it to my collection of old sun hardware that needs drives to become operational. Do SMD drives frequently show up at swap meets, etc? matt -- /* Matt Sayler -- mpsayler(a)cs.utexas.edu -- Austin, Texas (512)457-0086 -- http://www.cs.utexas.edu/users/mpsayler Have you ever imagined a world with no hypothetical situations? */