![]() ![]() Hopefully that's true, as that seems like a good deal. Now I see that it can in the 3x/4x series. When I was purchasing years ago, the Willem couldn't do 21v/25v chips (without power hacks, adaptors, etc.). It can read and program virtually all currently used EPROMs and OTP PROMs. Its easy to build, with all the components on a double-sided PC board. This Windows-driven EPROM programmer/reader connects to your PC via a standard Centronics printer port. Yeah the interface is old DOS-feel to it, but it simply works. A Windows Based EPROM Programmer - This new design can read the and program virtually all commonly-used EPROMs and OTPs. I have a PocketProgrammer2 and it reliably writes to all of my 25xx and 27xxx chips including TMS ones without problem. They have a unique feature to test 74LSxxx chips out (if you can trust the results), but the software is horribly designed, and clunky UI and Chinenglish bad translations (if translated at all). ![]() Trust me, I've used these programmers, and I have rarely had 12V's programm successfully, and I think only one 21V ever work right, and no 25V's. They may claim they can (they read fine) but don't have enough juice, unless perhaps you use a 1 inch USB cable and somehow crank the power up on the bus. They do not have enough power to handle 12+ volt chips. They are only powered via 500ma USB cable. ![]()
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