On 4/20/16 11:07 PM, Raymond Wiker wrote: > I was a bit surprised to see that it used 2901 with a date code of 1985 - > the 2901 was introduced 10 years before. > I designed a microcoded 12-bit graphics processor in 1985 using them. They were the thing to use until CMOS bit-slices came out (actually, there was a 29C01)