Iomec disc drive ?

From: Jay Jaeger <cube1_at_charter.net>
Date: Wed Dec 31 16:31:44 2003

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:
>Hello,
>
>Is there any chance that someone has an Iomec removable platter
>disk drive? The type that I am looking for uses an IBM 2315 style
>2.5Mb cartridge, similar to an RK05.
>
>I know that this is a pretty futile request, but it never hurts
>to ask...
>
>--tom

---
Jay R. Jaeger The Computer Collection
cube1_at_charter.net
Received on Wed Dec 31 2003 - 16:31:44 GMT

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