:Hello, a while ago I was after a way to upgrade my Personal Iris 4D/20
:from its current 8-bit graphics, GR1.2 (Entry Graphics) to 24-bits or
:24-bits + Zbuffer. A fellow from the newsgroups has the following boards
:030-8003-001 BP4 Bit Plane Board (HU-4D20G2)
:030-8004-003 ZB3 Z-Buffer Board
:030-8031-001 GR1.5 Graphics Board
:These specs he got from http://www.mce.com. Can someone here on this
:group tell me if any or which combination of these boards will suit my
The GR1.5 has a 14 pin video connector in addition to the BNCs. You
don't need to go to the GR1.5 to do 24 bits.
The ZB3 connects to jumper J10. The BP4 connects to jumpers J8 and J9.
Adding the ZB3 and BP4 to your GR1.2 will get you 24 bits + Z.
You could also add the GT1 or add the GT1 and GT2 to get faster graphics.
:If yes, what, briefly is the procedure for
:installation of such board(s)?
You have to take the left side skin off (that's the one with the power
cord through it), unscrew the screws holding the metal sheets in place,
unscrew any VME card you have installed, perhaps unscrew the CPU card
(I can't remember if it is above or below the graphics), unscrew the
screws holding the graphics boards in, slide it out, make your changes,
put everything back together. It's a little bit of a nuisance, but not
really so bad if you don't strip any of the screws. You will need a fair
sized floor or bench area to hold it all during disassembly. And anti-
static protections of course.