Iomega Bernoulli Box 20+20 (A220H)

It's alive! For those of you who don't recall a thread from six months ago, I was trying to get an old Bernoulli Box running again. This was a Model A220 - two 20MB 8" drives in an enclosure. I finally found somebody with cartridges that I could purchase and was able to get it going. Some things I learned along the way .. - The head cleaning kit is essential. The drive was ridiculously flakey until after five or six sessions with the cleaning cartridge, which basically lets you wipe a giant wet pad on the head by manipulating a lever through the cleaning cartridge. (Strictly a manual operation - they don't want you to get that cartridge loaded and start spinning it at 1500 RPM.) - The 20MB drives will read 10MB cartridges, but not write to them. - A stock XT can run with the cartridges having an interleave of 4. That gives you about a 120KB/sec data transfer rate. - The Iomega controller supports DMA and PIO modes. The PIO mode is pitifully slow. I won't mention the number here it is so bad. - The Iomega controller has an optional ROM that can boot the machine anything else you need to have a device driver loaded. The drive is truly marvelous to hear in action, and it's the most interesting drive I have in the house now. I'm finally happy that I got it working, although it's cost too much @#$#@ money. (The cartridges weren't cheap, nor were the controller cards, cleaning kit, etc.) If anybody has 20MB 8" cartridges or knows of a source, I'm still looking. There are some on ePay now for price that makes me visibly wince and consider playing with click-of-death Zip drives instead. (I'm looking for something a little more reasonable.) Mike