Who wants to help read a Saturn V core stack?

---snip--- Hi Although, not described in most books on cores, the inhibit lines were quite common. The use made it so that there was greater margine between the signal level of the address line running through the row or column bit that were not addressed and the one bit the that was to be read or written. All the bits in a core plane would see the inhibit line. It would be opposite the direction of the selected address line. If a bit only had one address line, the inhibit would mostly cancel the field of that driven address line. This means that a larger current could be driven through a single address line since it was mostly canceled by the inhibit line when not crossed. When two address lines cross that were driven, the net effect would be a significantly larger field since that would see the sum of the three. Think of the inhibit line as kind of a negative bias. I'm not sure when the they started using these but most of the cores that I've seen have them. As for reading one bit at a time, most cores have separate drivers for each plane so it is not hard to read a single bit at a time without effecting the other bits in a word. A single digital scope input would be enough. Dwight _________________________________________________________________ Windows Live Hotmail now works up to 70% faster. http://windowslive.com/Explore/Hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_faster…