11 Mar
2019
11 Mar
'19
5:19 p.m.
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