On Mon, Sep 27, 2021 at 8:23 AM Tom Hunter via cctalk <cctalk@classiccmp.org> wrote: > > The part is an Intersil IM5600CP, but these were also made by others, for > example Signetics and Philips made the 82S23 and TI and NTE made the faster > SN74S188N. Some vendors still sell these parts and there are even a few on > Ebay. > > How do I program these PROMs? I found one somewhat obscure description of > the algorithm in the NTE datasheet, but I suspect that each manufacturer > had (somewhat) different algorithms. > > Is there an affordable commercial programmer out there which can program > these PROMs? >
How do you program a single bipolar PROM as a one time occurance? Find someone willing to do it for you for the cost of the postage :) Are there affordable commercial programmers which can reliably program bipolar PROMs with device vendor approved programming algorithms? I have an older Data I/O UniSite and a newer BP Microsystems BP-1610 which between the two of them can cover the majority of those older devices, and the BP-1610 is currently supported with regular software updates. I wouldn't call either of those two programmers "affordable", and you have to be patient to pick one up on eBay. The older parallel port interface BP-1200 and BP-1400 device programmers probably have the same bipolar PROM support as the BP-1610, and can more often be found at somewhat reasonable prices on eBay, but software updates for new devices were discontinued for those non-USB interface programmers several years ago.