Bubble Memory

<Yeah, I remember bubble memory. It seems like Fujitsu actually got <to work halfway decent. Despite the cost and speed limitations, Intel manufactured 1mb and 4mb parts with control chips. The BPK72 was the 1mb part on a card with all the control to make a 128k storage system. I have two, bought in '85. they still owrk and have proven quite rugged too. <instrument controllers. SLow, expensive, but for awhile it was about <all you could use for mass storage in certain hostile environments. I used them in cpm based systems and they are faster than floppy on average. The byte transfer rate is slower but the seek time is real fast. They work well. AS to cost they compared well with floppy systems of the time considering they were able to take shock and vibration. Allison