[rescue] Optimizing 4-260 crate

[BSD Bob the old greybeard BSD freak]

I am trying to optimize my ancient sun 4/260 crate, and have been going
through all my vme card bits looking for cards to add in to give me the
best 4/260 practically, for the home server farm.  Amidst the VME board
fodder I found the following that might help towards that end.

1.  Graphics Processor board

2.  Graphics Buffer board

3.  CG3 board (to add over the on-board mono of the 4200 cpu).

4.  TAAC1 application accelerator board.

Now, since I have never had most of the color and graphics stuff up
on any of my VME crates, I want to make sure I am not going to do
anything excessively self-destructive to the old VME crate.  I don't
have any spare boards for the 4/260.

Anyway, if I am gleaning the info correctly from the FEH and the Sun
hardware faq, I need to rank the cards thusly:

   slot     8       9       10       11         12

           taac1   taac1    gp       gb         cg3

Slots 1-7 are the cpu/ram/scsi cards.

Gp and gb must go in 10 and 11?  FEH seems to indicate that.

TAAC must occupy two contiguous slots, so only 8/9 are open for that.

That leaves only 12 for the cg3.

Is that reasonable?

The cabling will go from the cg3 (4 bnc?) to the taac1 input and back
out to the 4 bnc monitor?

Anyone ever done anything like that?

Anyone have any info/software to run on the TAAC1?

Anyone know of any jumpering problems with the above?

Anyone see any other problems with the above?

How closely will it be pushing the power supply limits?

What will the above buy me over just the cg3 board?  My thought
was to run an X on the critter, even though it will be slow on
the 4/260 at 16mhz.  But, hey, the thing is the first Sparc,
and I want to keep it for just that reason.  I know the guy
over in Chapel Hill that designed and built the TAAC1, and
he said it could do some neat things, in its day.

Should I leave the TAAC1 out and just run the gb/gp/cg3?

IFF I don't put the TAAC1 in, that would leave a slot open
for a second scsi controller.  I have heard that could be done,
but don't have particulars on it.  Supposedly, the kernel can
be recompiled to support two scsi boards (not officially Sun
supported).

Comments/horror stories/etc, appreciated.

Thanks,

Bob