TTL Calculator Project & CDC 5601 processor core?

I was one of those who received a copy of the article from you and was negligent in responding, I'm sorry. It was greatly appreciated and I do plan on building one sometime. Also, I believe you were interested in dumping the core from the CDC 5601 processors I picked up a few month ago. If so, contact me and we can arrange something. Bob Billy Pettit <Billy.Pettit at wdc.com> wrote: Several months back, we talked about a calculator built from TTL. It came I had 7 requests for copies, which I mailed directly to the requestors. Apparently they disappeared into a black hole, because I didn't receive a single acknowledgement, let alone a thank you. So for those still interested, Al Kossow scanned my copy and posted it on bitsavers: http://www.bitsavers.org/pdf/practicalElectronics/digi-cal/Digi-Cal_Jul72-Ma y73.pdf Billy