Tape reading question

[Chuck Guzis]

On 3/11/19 10:32 AM, Al Kossow via cctalk wrote:
> If you open it up, it should have a DEI tape drive in it, which predates QIC
> The data coming off the tape is NRZ instead of GCR
> 
> I just double-checked and the drive pinouts match the DEI CMTD-3400 manual
> I know, it isn't obvious at all from the maint manual..
> 
> This is a problem for a bunch of systems built in the early 80's (Zilog, Onyx, etc)
> 
> I have a stack of tapes in the queue (incl an 816 tubodos tape) for me to get fixed-head 4 track reading working

I've got a 3M DCD-3 4-track drive if you're interested.  It's been
sitting around for a time and comes with a rackmount Lambda PSU that I'm
certain needs recapping.

I'm not sure what the 50-conductor ribbon cable interface is, but I
suspect it's nothing standard.


--Chuck