25 Oct
2015
25 Oct
'15
12:27 a.m.
Further digging into available eproms that the
programmer can read reveals
it CAN read 2532s, specifically the MCM2532 which the datasheet tells me has
the same pinout as the 2332. I still get "reverse insertion error" so I'm
guessing my PROMs are toast.
As others have said, normally when putting a smaller chip into a programmer
with a bigger socket you keep the 'bottom row' of pins -- including ground --
in the same position for all chips. A look at the pinouts will show why. But as
you can read 2716s that's not the problem.
Often 'reverse insertion error' means the chip drew the wrong supply current --
often far too much. Which does suggest your ROMs are dead :-(
-tony