12 Apr
2008
12 Apr
'08
6:35 p.m.
On Saturday 12 April 2008 20:42, Sridhar Ayengar wrote:
Cameron Kaiser wrote:
Because the DX-50 had a core speed of 50MHz, nothing needed to be done.
If you start from a board that has a core speed of 33MHz (like a
DX2-66 or DX-33), you would need to set a core speed of 50MHz. Boards
where this is possible are actually reasonably rare.
Hmm. I have this box around here someplace, ISA-only (no VLB in there) that
has the CPU on a daughterboard with some jumpers on it. Currently there's a
486dx2/66 chip in there, and I know that moving the jumper to other
positions makes it run slower, faster but way more flaky, and not at all
(in what I assumed at that time was a 100 MHz position). Nice box, built
like a tank, and I'd love to find some info on ie one of these days. Oh
yeah, and it says "digital" on the front. Anybody know if DEC made this
sort of thng ever?
The only downside to it is that it will only recognize parity RAM. Of which I
don't have enough, so there's two 16s and two 4s in there.
I was gonna run OS/2 on that box at some point but may try running linux in
there, maybe. Might try one of those 5x86/133 chips, too.
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
I *love*
486DX-50 machines. I've had some success in the past
installing Am5x86-133 chips in these machines running at 200MHz.
What did you change on the board to get the 200MHz speed? I have a -133
here that I'd love to try that on.