Does the VAX 780 load ALL it's microcode at boot-time, or is some of it on
ROMs?  From what I get from the manuals, and playing with the 785, there is
a RX01 connected to the LSI mini at the bottom of the rack.  When you power
it on, (And put grant continuity jumpers in the right places on the mini :)
it loads microcode from the floppy, then becomes a terminal.
You get a message similar to this:
VER:  PCS=01 WCS=0E-10 FPLA=0E CON=V07-00-L  KE780 PRESENT
PCS is the programmed control store, WCS is the writable control store,
and FPLA (Field Programmable Logic Array) causes the VAX to fetch microwords
from WCS instead of PCS.
I take it that the PCS is on a ROM, and WCS and FPLA are on EEPROMs.
If that's right, which board are the PCS ROMs on?  Has anyone made images of
them?  Also, does anyone have a disk image of a VAX 780 microcode disk?
Just getting curious about how big VAXen work...
One more thing:  How does one go about getting NetBSD/vax on a 780?
(Netboot?)
How many out there (Besides Ragge) have large VAXen?
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