Iomec disc drive ?

I have one I am working on -- attached to an HP 2114. The drive spins up and can seek. The interface cards in the CPU pass their diagnostics, but the controller is locking up -- looks like a problem in the state flip flops that control the early part of a command. Also, my guess is that this one is 1.2MB, not 2.5MB. It has one fixed platter and one removable platter. It also is exhibiting head/disk interference ("ting") on unload, but so far doesn't seem to be damaging anything when it does it (but I am using junk pack, just in case -- can't tell if the ting is coming from the fixed or removable platter). If you want to recover the data, you might consider putting the platter into an RK05, doing an a/d and capture of the raw data (or even the bit stream after recovery) from the pack. Might be safer. The logic in my IOMEC 1802 controller that is unhappy has Fairchild chips -- not standard 74xx fare. It may well be that they are DTL (sample markings on one are DT uL909759 7020), which I am currently guessing is a 9097 chip. Jay Jaeger At 11:11 AM 8/26/2003 -0500, Tom Uban wrote: --- Jay R. Jaeger The Computer Collection cube1(a)charter.net