7 Jul
2006
7 Jul
'06
2:38 p.m.
At 12:00 -0500 7/7/06, Jules wrote:
Hmm, well this machine is an '040 @ 25MHz, but with
the 30 pin sockets. I'm
not sure if that's a Turbo or not? I always thought the Turbo was exclusively
an '040 @ 33MHz - but quite possibly it's *any* '040 slab regardless of speed?
I don't believe there were ever any 68030 slabs. NeXT went to '040 in
the cube before the slab came out. So the "Turbo" distinction refers
to the chipset which accellerates memory access, etc. Most if not
quite all "Turbo" machines also had the CPU clocked at 33 MHz.
All of the official and unofficial documentation I've seen indicates
4 MB as the limit for 30-pin SIMMS, which limits your machine to 32MB
(which is plenty for NS3.2, 3.3). However there are many places where
NeXT did not officially support bigger SIMMS, but they worked fine.
NeXTDimension cards, many of the 33 MHz CPU boards, etc. So it may
well be worth a try if you can get a matched set of 4 bigger 30-pin
SIMMs. Particularly if your machine is a hybrid more or less oriented
to the 72-pin SIMM slots, it may expect greater depth per bank than
16 MByte.
Corrections welcome, if anyone has better knowledge than I.
--
- Mark
Cell Phone: 210-379-4635
office: 210-522-6025