On Thu, 12 Aug 2010 10:08:09 -0400, Shmuel Metz (Seymour J.) wrote: >the entry level and midrange boxen >were never bipolar.
Are you sure about that? They were certainly not ECL or CML, but I thought that they were TTL or a variant of it and were constructed of bipolar transistors. -- Tom Marchant ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html

