1. Forum
  2. USENET
  3. comp.sys.unisys

  • Re: Set quarter word mode

    From Stephen Fuld@sfuld@alumni.cmu.edu.invalid to comp.sys.unisys on Mon Feb 23 13:08:08 2026
    From Newsgroup: comp.sys.unisys

    On 2/11/2026 1:53 AM, Steve J. Martin wrote:
    I found this old basic mode code:

    . Set quarter-word mode:
    SPD-a-a-a-a-a-a A0-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a . A0 := designator bits
    OR,U-a-a-a-a-a A0,010-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a . A1 := A0 + D10 set LPD-a-a-a-a-a-a 0,A1-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a . Put designator bits back


    Is at least LPD privileged?
    --
    - Stephen Fuld
    (e-mail address disguised to prevent spam)
    --- Synchronet 3.21b-Linux NewsLink 1.2
  • From R Daneel Olivaw@Danni@hyperspace.vogon.gov.invalid to comp.sys.unisys on Tue Feb 24 09:03:47 2026
    From Newsgroup: comp.sys.unisys

    Stephen Fuld wrote:
    On 2/11/2026 1:53 AM, Steve J. Martin wrote:
    I found this old basic mode code:

    . Set quarter-word mode:
    SPD-a-a-a-a-a-a A0-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a . A0 := designator bits
    OR,U-a-a-a-a-a A0,010-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a . A1 := A0 + D10 set >> LPD-a-a-a-a-a-a 0,A1-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a . Put designator bits back


    Is at least LPD privileged?




    No.
    --- Synchronet 3.21b-Linux NewsLink 1.2