360/67.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <[email protected]> on behalf of Steve Smith <[email protected]> Sent: Wednesday, February 12, 2020 11:21 AM To: [email protected] Subject: Re: Backward compat--how far? There are also SSK, ISK, LMC, & STMC; all privileged. x'0d' (BASR) and x'4d' (BAS) are modern (XA-era) successors to BALR/BAL. If they had a previous incarnation, I hadn't heard about it, but I never got close to a 360/20. sas On Wed, Feb 12, 2020 at 10:27 AM Tom Marchant < [email protected]> wrote: > On Tue, 11 Feb 2020 23:53:58 -0500, Randy Hudson <[email protected]> wrote: > > >In article <[email protected]>, > > <[email protected]> wrote: > > > >> I've got a copy of "IBM Operating System/360 Assembler Language" > copyright > >> December 1964. Pretty sure all the opcodes listed in Appendix B > (Machine > >> Instruction Mnemonic Codes) are still supported by the hardware (I > haven't > >> checked 'em all). > > Off the top of my head, the I/O instructions, SIO, HIO, CIO, TIO, and TCH, > were removed with the introduction of 370/Extended Architecture around > 1982. Read Direct and Write Direct were also removed at about the same > time. There may be a few other instructions that have been removed, but > IIRC they are all privileged instructions. > > -- > Tom Marchant > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > -- sas ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
