Are you sure the 6550 is dead? (was: Mos Technology RAM wanted) - test-drb@ccmp.vtda.org

21 Mar 2000

--- Pete Turnbull &lt;pete(a)dunnington.u-net.com&gt; wrote:
...
  On Mar 21, 21:48, Tony Duell wrote:
  > else, long before I posted my request.   I
could fix about anything  else on
  > the PET, but I draw the line at grinding the
top off to poke at  individual

flip-flops in an IC :-)  FWIW, the first job I had in 
 Really, kids these days.....  
 Well, I once ripped the metal lids off a few ceramic DRAMs to use them as
 optical image sensors (ISTR an article in BYTE, I think it was, years ago
 about that) 
Yes!  I just repacked my lidless 4116 chips.  I only ever got as far as
cementing slide-mount covers on one and sticking it in an Apple II at the
top of RAM and demonstrating the effect by clearing video RAM then lifting
the lid.  Many bits sparkled in when light shone on the chip.

Now that I have a digital camera, I'll have to take pictures (as soon as I
buy/find/make a Mac crossover cable to connect a QuickTake 150 to my Mac).

-ethan

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