SMS FWD 0101 disk/floppy info?

Brad Parker brad at
Sun Apr 17 06:54:12 CDT 2005

"Zane H. Healy" wrote:
>The odds are there isn't a Q-Bus controller, even though the system 
>it probably came out of would have had a Q-Bus.  Confused yet? :^) 
>Is the 8" floppy by any chance a "Tandon Model TM848-2E" or "Model 
>YD-180"?  I'm guessing what you have is out of an SMS-1000 PDP-11 
>based computer.  They had their own board for the I/O, and the Q-Bus 
>plugged into that.
>You can find a few pages from the manual (everything I have) at:

That's similar, but not what I have.  the backplane and disk assembly
are separate.

There is a very large board connected to the HD & FD, with a 2901 and
8085.  This appears to connect to something on the qbus with a 50 pin


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