Many thanks to Glen's Vintage Computer Info
Alan Frisbie
Flash688 at flying-disk.com
Wed Mar 28 16:45:29 CDT 2018
I don't know if Glen Slick is on this list, but I owe him one!
I am working on an elderly PDP-11/23 system running RSX-11M v3.2 -- too
old to know about MSCP disk controllers like the RQDX1/2/3 and compatibles.
It is only sysgened for RK05, RL01/2, and an incompatible 3rd-party disk,
but neither the RK05 or RL01/2 controllers are present.
To do my work, I thus need an RL02 and controller... OR something that
emulates an RL02. I had planned to post a note here today, asking for
recommendations for RL01/2 (RLV11) emulators, but got distracted.
Instead, I set about making an inventory of several boxes of Q-Bus cards
I had accumulated over the years. Most were DEC, but a bunch were weird
3rd-party controllers, one of which was a TD Systems TDL-12. What the hell
is a TDL-12?
My Google searching led me eventually to Glen's Vintage Computer Info
https://sites.google.com/site/glensvintagecomputerinfo/home
and his page on the TD Systems TDL-12: https://sites.google.com/site/glensvintagecomputerinfo/td-systems/tdl-12
The TDL-12 turns out to be a Q-Bus SCSI controller, emulating up to
four RL01/2 drives -- exactly what I needed! Glen's web page even
includes a PDF of the original TD Systems manual for the board.
So, Glen, whoever and wherever you are, I thank you from the bottom of
my heart for creating and maintaining a web page about this orphan
controller. You have saved me a lot of time, effort, and probably
a bit of money as well.
As an added bonus, Glen also has a page for an obscure HP Q-Bus logic
analyzer card, which I also have. But that's a project for another
day.
Thanks,
Alan Frisbie
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