KD11-E/EA microcode flow diagrams

[Noel Chiappa]

    > From: Fritz Mueller 

    > I should go read up on QSIC.

There's not much on the Web, alas. We have two working prototypes (a wirewrap
QBUS mother-board with bus transceivers, level converters, etc, connected to
an FPGA prototyp ung card by flat cables), and working FPGA code to emulate an
RK11, using a uSD card for actual storage. It's good enough that the /23 can
boot and run V6. We also have working indicator panels:

  http://ana-3.lcs.mit.edu/~jnc/tech/DECIndicatorPanels.html

but the inlay we've done:

  http://pdp10.froghouse.org/qsic/indicator-panel-printed.jpg

is not a straight copy of an existing panel (those all have lots of lights
that only make sense with a real drive, and leave out others that would
be really useful, e.g. the address). Here:

  http://pdp10.froghouse.org/qsic/manual.pdf

is the firat crack at the manual for the production version (the RP11 is not
done yet).


    > I could really use a "USIC"... :-)

That's next, after the QSIC is out. It will include Able ENABLE:

  http://gunkies.org/wiki/Able_ENABLE  

functionality, so UNIBUS machines can have more than 256KB of main memory.


    > Probably the best thing would be to pop a ROM out of a working /34 and
    > read it out? Is that how you've gotten your authoritative version?

I didn't get it, I found it on BitSavers - I assume that was what whoever
provided it did. But it's actually stored in 12 4-bit wide PROMs, U95-U118
(roughly).

	Noel