On 30 December 2013 10:31, David Andrews <d...@lists.duda.com> wrote: > Though the wikipedia article doesn't mention it, my recollection is that > Magnuson's M80 system was microprogrammable by the user. Anybody > remember/use that?
Much earlier the 370/165 and /168 had a Load MicroProgram instruction that loaded microcode from main storage. X'B9', iirc. Used by OLTEP tests, I think. Tony H. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
