On Mon, May 9, 2016 at 11:23 AM, Mattis Lind <[email protected]> wrote:
> 2016-05-09 19:42 GMT+02:00 Eric Smith <[email protected]>: > > > On Mon, May 9, 2016 at 5:13 AM, Mattis Lind <[email protected]> > wrote: > > > Last time I had a PROM failure is what the internal address decoding > that > > > failed which was easily seen as certain patterns repeated all the time > > > > Not impossible, but it seems more likely that one of the address input > > pad buffers failed. > > > > You're probably right in that. On the other hand looking back on what I > wrote I see that I wasn't completely accurate in describing the symptom... > The symptom was that the upper 128 words was inclusive-OR:ed with the lower > 128 words resulting in a quite strange upper 128 words. That was my reason > for suspecting the faulty address decoder. > > Anyhow I have now ordered a bunch of Texas TBP24SA010 chips which I hope > the old Data I/O 29B will be able to program successfully. > Having just programmed some 24SA10's a couple of weeks back on a Data I/O 29B, I can report that you should be fine... - Josh
