5 Apr
2012
5 Apr
'12
5:28 p.m.
On Apr 5, 2012 5:11 PM, "Dave McGuire" <mcguire at neurotica.com> wrote:
There was a time when I'd know that board like the back of my hand.
:-( We ran so many of those it'd make your head spin.
Thinking about it, though, info is starting to come back to me. Look
at the plate on the top edge of the board. If the LEDs are at the top,
near or underneath the part number and serial number tag, it's for a
3/200 or a 4/200. If the LEDs are toward the middle, it's for a 4/400.
They are incompatible. This is likely the latter, given the ZIPs, and
it's probably a 32MB board.
The 32MB 501-1333 for the 4/400 uses ZIPs but also uses (8x) square PGA
AM29C660 instead of the large DIPs so that is not the board. I have a
501-1333 right in front of me at the moment.
On the 501-1333 all of those socketed DIPs are PALs. If those are missing I
doubt they could be replaced.