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SiriusHardware · 26th Oct 2021, 5:54 pm

Running the test EPROMs for long periods of time will give you a fair idea of how warm EPROMs will get if you clone the PROMs into them - probably not very warm.

Unfortunately the specific EPROMs which replace those PROMs (TMS2532) are quite expensive and most device programmers don't support them, although the first adaptor you made -may- allow a programmer which can program a 2732 to programme a TMS2532 by rearranging the pins appropriately. You'd need to be very sure you had the right adaptor for the right purpose otherwise you'd risk applying the high programming voltage (VPP) to the wrong pin of your expensive TMS2532s.

My old device programmer can natively program the TMS2532 so that's another option for you as and when you get to that point. I don't have any though, so you'd need to send some down to me.

26th Oct 2021, 5:54 pm	#222
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,556	Re: Commodore PET 2001 voltage regulators Running the test EPROMs for long periods of time will give you a fair idea of how warm EPROMs will get if you clone the PROMs into them - probably not very warm. Unfortunately the specific EPROMs which replace those PROMs (TMS2532) are quite expensive and most device programmers don't support them, although the first adaptor you made -may- allow a programmer which can program a 2732 to programme a TMS2532 by rearranging the pins appropriately. You'd need to be very sure you had the right adaptor for the right purpose otherwise you'd risk applying the high programming voltage (VPP) to the wrong pin of your expensive TMS2532s. My old device programmer can natively program the TMS2532 so that's another option for you as and when you get to that point. I don't have any though, so you'd need to send some down to me.