TOD Clock switch AFAIK came in with the 370. I remember it specifically on the 168 my memory is iffy on the 155/158 but I think it was there, no experience on the 14X .
If it was there on the 360's I never heard/saw anything about it. Ed ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
