Hello to the group Joe here are the exact model numbers that I have and do indeed work. IOmega488a IOtech Micro 488a IOtech 488ex IOtech serial 488a Black Box 232 to 488a If I would run across other units at $5 as I have in the past I would indeed try the mod. I think the key to the discussion is the MPU board needs to actually have a eprom socket. Regards Paul.
On Sun, Mar 18, 2012 at 1:56 PM, paul swed <paulsw...@gmail.com> wrote: > Joe > Its been a while since I posted those eproms and info. > I need to do 2 things. Look specifically at my models tested and listed > and see what that means in the context of your question. Perhaps later > today. > Regards > Paul. > WB8TSL > > > On Sun, Mar 18, 2012 at 11:38 AM, J. L. Trantham <jlt...@att.net> wrote: > >> Paul, >> >> Have you tried this in an NI GPIB-232CV-A or a GPIB-232CT-A? I have tried >> to swap the data between a 232CT-A and a 232CV-A with no joy. The two >> units >> are fundamentally different. >> >> That's why I have the chips. >> >> Joe >> >> -----Original Message----- >> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On >> Behalf Of paul swed >> Sent: Sunday, March 18, 2012 9:38 AM >> To: Discussion of precise time and frequency measurement >> Subject: Re: [time-nuts] IOTECH 488 EPROM >> >> >> Hello to the group. >> Indeed the prom changes the behavior to a full controller and the ones I >> listed were changed and worked. Because those were the units I had found >> over the years. No idea about this particular prom and such. Regards Paul >> WB8TSL >> >> On Sun, Mar 18, 2012 at 10:12 AM, J. L. Trantham <jlt...@att.net> wrote: >> >> > Joe, >> > >> > The NI GPIB-232CV-A uses an ST M27C256B-15C1 One Time PROM in a PLCC >> > 32 pin package. However, a Winbond W27E257 EEPROM is a pin for pin >> > substitute. The M27C256B and the W27E257 both come in a 28 pin DIP >> > package (0.6 >> > spacing) >> > so you should be able to use a programmer with that chip support and a >> DIP >> > to PLCC adapter, wired appropriately, to do the programming. The 28 pin >> > DIP >> > packages are UV erasable. I've never seen a PLCC UV erasable package. >> Do >> > they exist? >> > >> > In any event, I can program the chip for you if needed. I have some >> > spare W27E257P-10 chips and can burn one for you as well and send it >> > to you if needed. I am in Northwest Florida. >> > >> > Joe >> > >> > >> > -----Original Message----- >> > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] >> > On Behalf Of Joseph Gray >> > Sent: Sunday, March 18, 2012 2:18 AM >> > To: Discussion of precise time and frequency measurement >> > Subject: [time-nuts] IOTECH 488 EPROM >> > >> > The text file accompanying the EPROM file on KO4BB's site mentions >> > using this EPROM image with a NI controller. I have a NI GPIB-232CV-A. >> > Can I use the image with this controller? If so, I assume that I then >> > have the equivalent of an IOTECH controller? >> > >> > I partially disassembled my GPIB-232CV-A and from peering between the >> > boards, it looks like the EPROM is a PLCC. I can't burn one of those. >> > If I can use this image with my controller, can someone burn a chip >> > for me? I'll pay for the chip and shipping, of course. >> > >> > Joe Gray >> > W5JG >> > >> > _______________________________________________ >> > time-nuts mailing list -- time-nuts@febo.com >> > To unsubscribe, go to >> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> > and follow the instructions there. >> > >> > >> > _______________________________________________ >> > time-nuts mailing list -- time-nuts@febo.com >> > To unsubscribe, go to >> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> > and follow the instructions there. >> > >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
