Looking for PDP8/A RL01 boot proms.

Tony Duell ard at p850ug1.demon.co.uk
Thu Jul 22 12:41:13 CDT 2010

> >> You'll need to burn the images into 82s126 chips...
> Looks like the 74S387 is another cross.  Jameco has them for $4 each.

Most of these bipolar PROMs had many 'crosses', but for reading only. The 
programming methods are manufacturer-specific. Once programmed, the chips 
behave identically, so the PDP8/a (or watherver) doesn't care.

So make sure whatever programmer you use can program the particular chip 
you are getting, and not just one that's a cross for it. Then you shoupd 
have no problems.


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