[1] The local
pound shop (a similar concept to dollar stores) was selling
a camping lamp with 24 white LEDs for a pound.
I'd buy that for a pound! (and repurpose it, as you have).
Do I _hate_ that word. What's wrong with 'canibalise' or 'modify' as
appropriate?
Anyway, 'pound shops' (and I guess 'dollar stores') sell a lot of
totally useless things IMHO (I would not buy tools from them), but
occassionaly you get things that are actually quite useful, or a useful
source of parts. Occoasionally they get bankrupt stock or ends of lines,
and those can be good quality name-brnad products. Needless to say
they're well worth buying.
Incidentally, I was amazed how little current a white LED needs to give
some glow. I found that if I held one lead of such an LED, touched the
other one on the approraite terminal of a 9V battery and then touched the
other terminal of the battery with my spare hand (thus using my
hand-to-hand resistance as the limiting resistor), I got a dim, but
certianly visible, glow from the LED.
BTW, the
article says it is an MC68008, so you did not need to count
24 pins (on one side) :-)
Oh, I didn't . I noticed it was a 0.6" wide package. The 68000 and 68010
DIL packages are 0.9" wide.
Indeed. Quite distinctive.
Not as distinctive as the 8X305. I think that's the only common chip in a
52 pin DIL pacakge (0.9" wide).
I have read about the 68012, but don't think
I've seen one in the wild.
Nor have I. I've net seen a full data sheet on it either. Some HP9000/200
machines (the -U models and the 9817) use a PGA-packaged 68010, and 27
(rather than 23) address lines go from the socket to the MMU circuitry.
I've always assumed this is for a 68012 processor. I'd like to find one
and try it, if onl;y to see if the '68010 Processor' messge in the
power-on tests changes.
-tony