Hi there,
Well I'm not sure of all the ways to see the board revision but I
know if you load up SysInfo and select the devices<- toggle then it
should list 1230scsi.device v8.5.
There may other ways, particularly through shell but I know SysInfo
(the old one made in Australia) that does it.
With regards to using the SCSI-IV for extra RAM bare in mind the
following:
1) The space inside the A1200 desktop is very limited so you will need
single sided SIMMs that are non-composite (i.e. compact 8x DRAM SIMMs)
and not much taller, fatter or longer than the 8x DRAMs i.e no useless
silicon leftovers either side - the SIMM needs to be compact and
no-nonsense.
2) Double sided SIMMs will not physically fit on either the
accelerator or SCSI-IV (the SCSI-IV has a capacitor in the way, at
least on the DCE version)
3) The SCSI-IV will slow both SIMMs down to 70ns if there is a SIMM on
the SCSI-IV. You can, strangely enough, install a SIMM on the SCSI-IV
without one being on the main accelerator
4) Consider some sort of fan as it'll get very hot and cramped in
there, however the SIMMs should never physically touch the trapdoor
plastic (the SCSI-IV SIMM will probably touch the floppy drive a
little however)
5) Pick FPM memory (Fast Page Mode) and not EDO or nibble mode memory.
You don't want laser printer memory either, or Compaq SIMMs of any
description. Try to avoid composite SIMMs or those with unknown
components on (a lot can be designed for servers and may fry your
SCSI-IV)
6) If you do decide to go the most reliable route and pick up FPM
memory you will probably be limited to a total of 128mb and not 256mb.
Some sites say you can have 192mb or even 256mb on the 1260 but I
can't see how this is physically possible (capacitors on the newer 8.5
DCE SCSI-IV and also limitations of the desktop A1200).
7) Try to get non-parity SIMMs as the SCSI-IV can't utilise error
correction technology so you'll just have 4x more useless chips in
there. 128mb SIMMs do come in non-parity varieties but will almost
always be double-sided.
64mb SIMMs seem to be very rare in FPM form, especially in the
single-sided, non-parity form. Be careful with 64mb SIMMs as they can
be sampler memory, laser printer memory and occasionally EDO. None of
which can guarantee reliable performance with the SCSI-IV.
Particularly with the 1260.
9) Make sure your SCSI-IV has the steel housing attached to the end of
it's 25-pin female cable so that you can secure the socket to the
retainer screw on the rear expansion slot. My v8.5 DCE SCSI-IV didn't
have this metal box and so just dangles precariously out the back like
a lizard's tongue!
:-D
