vrs42
Veteran Member
I do have tubes from different batches, according to the markings on the chips, as I hoped initially it was a bad batch. In the original Lafferty design, there were differences in how often they would fail, but none of them worked. The Cypress branded chips I had used before were fine, as were the few other brands I had on hand.It's also possible that the 32Kx8 QC problem was batch-specific and you got "lucky" with your tubes :-{.
I haven't attempted a rigourous check of the Alliance batches, though I do have IIRC three pair that I was doing the debug with. None of those seemed to work appreciably differently once the timing/shoot-through issues were cleaned up.
Vince