Hi Garrett, It is interesting that you just posted on Intel Bubble memories as I was just going to put a for-sale posting up for my Intel Bubble Cassette reader and bubble module (identical to your second set of photos). I wrote a CP/M-80 Bubble Cassette Bios to interface my unit to a home-brew Z80 system and had it working nicely. I have some documentation called BPK 72 Bubble Memory Prototype Kit User's Manual 121685-003. The BPK-72 kit is a small board with the bubble controller(s) and one permanently mounted bubble. The bubble cassette system (2nd set of photos) appears to be the BPK-72 board redesigned into a cassette kit. I believe the pin outs and power are the same as the BPK-72 documentation. The BPK-72 documentation says it?s a 1Mbit Bubble Memory System with an 8-bit interface. Power requirements are +5v @385ma and +12v @ 400ma. If any list readers are interested in purchasing my Intel Bubble Cassette Kit and CP/M-80 Bios (paper printout) I'm interested in selling it to help fund new technology purchases. Robo -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Garrett Meiers Sent: Sunday, November 17, 2013 12:34 AM To: General Discussion: On-Topic and Off-Topic Posts Subject: Intel PC Bubble Card Software? Hi, We just got a couple of these Intel PC Bubble Cards in today, and they didn't have any software with them. Does anyone have the software for these? Or know where I might find a copy? Both of the two cards are pre-production versions. I am not 100% sure of the model #'s. One says Intel "MD-054", and the other says "MD # 25-54", SN#'s 180 and 191 respectively. https://www.facebook.com/media/set/?set=a.246762432147849.1073741851.237349… I also received this in as well, and can't find any information about it. The removable cassette is really heavy. Thinking maybe Bubble Memory? Any help identifying it would be great! https://www.dropbox.com/sh/rpsvjq55h7hlqog/ECmMraCxs3 Thanks, Garrett Meiers Founder, BitHistory.org & President, ConsulNIX, LLC www.BitHistory.org www.linkedin.com/in/theunixguy