On 11/21/2016 04:17 PM, Charles Anthony wrote:
That would be a HUGE difference between different serial numbers, so I'd rather doubt it.I was looking here:http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/360/ fe/2020/Z33-1021-0_2020_Processing_Unit_FETOM_May68.pdf (pdf) pages 45, 46 describe the ALUI note that the cover page says: "(Machines with serial no. 50,000 and above)." Perhaps the ALU is only present on late model machines?
Jon