Old EPROM questions again, EPROM Programmer

On Wed, Jul 28, 2004 at 05:55:08PM -0700, Tom Jennings wrote: Well, I find it interesting, if for no other reason than I have a pair of 27C512s I'd like to reprogram (new version of BTS6120) and I did not happen to bring my programmer with me. No, there does not appear to be an EPROM programmer for at least 850 miles, if not 3000 miles. I don't know that I'd construct my own here, but I probably could. We have adjustable bench supplies I could use for the programming voltage (meaning I don't have to roll my own); all I need is a way to cycle the address pins and to read/write the bits (since I would really like to verify the parts before and after). I do have several device programmers at home, a full-sized Data I/O unit with about 8 ZIF sockets, a Bay Technical Associates serial-interfaced unit, a B&C Microsystems UP600A, a Promenade (for the C-64), and a couple of SBCs with built-in EPROM programmers (Z-80 Starter Kit...) None of them were small enough to be worth the chance I'd need one down here, so now I'm stuck. One thing holding me back - no way to erase the parts I have with me... I can't even use the trick of concentrating sunlight. :-) I have a couple of "ultraviolet" LEDs with me, but I doubt they are the right frequency to erase EPROMs. -ethan -- Ethan Dicks, A-130-S Current South Pole Weather at 29-Jul-2004 02:10 Z South Pole Station PSC 468 Box 400 Temp -71.5 F (-57.6 C) Windchill -103.5 F (-75.3 C) APO AP 96598 Wind 8 kts Grid 039 Barometer 667 mb (11119. ft) Ethan.Dicks(a)amanda.spole.gov http://penguincentral.com/penguincentral.html