Editing IBM System/4 Pi (section)

==References==
{{reflist | refs=
<ref name=Tomayko1988>{{cite report |author=James E. Tomayko |author-link= |date=March 1988 |title=Computers in Spaceflight: The NASA Experience |url=https://www.hq.nasa.gov/office/pao/History/computers/contents.html |archive-url=https://web.archive.org/web/20210828132457/https://www.hq.nasa.gov/office/pao/History/computers/contents.html |archive-date=28 August 2021 |publisher=NASA Scientific and Technical Division |page= |id=NASA Contractor Report 182505 |access-date=17 November 2024}}</ref>
<ref name=F15>{{cite journal |last1=McTigue |first1=T. V. |date=December 1976 |title=F-15 Computational Subsystem |url=https://arc.aiaa.org/doi/abs/10.2514/3.58734 |journal=Journal of Aircraft |volume=13 |issue=12 |pages=945–947 |doi=10.2514/3.58734 |access-date=18 November 2024 |url-access=subscription}}</ref>
<ref name=AP101S>{{Citation
 | title = The new AP101S General-Purpose Computer (GPC) for the Space Shuttle
 | year = 1987
 | author = Norman, P. Glenn
 | journal = IEEE Proceedings
 | pages = 308–319
 | volume = 75
 | issue = 3
 | doi = 10.1109/PROC.1987.13738
| bibcode = 1987IEEEP..75..308N
 | s2cid = 19179436
 }}</ref>
<ref name=Tomayko1985>{{cite journal |last1=Tomayko |first1=James E. |date=January 1985 |title=NASA's Manned Spacecraft Computers |url=https://ieeexplore.ieee.org/document/4392961 |journal=Annals of the History of Computing |volume=7 |issue=1 |pages=7–18 |doi=10.1109/MAHC.1985.10009 |access-date=18 November 2024 |url-access=subscription}}</ref>
<ref name=AP102>{{cite book |last1=Stuart |first1=Kenneth C. |title=&#91;1992&#93; Proceedings IEEE/AIAA 11th Digital Avionics Systems Conference |date= 1992|chapter=VHSIC technology insertion into the AP-102 avionics processor family |url=https://ieeexplore.ieee.org/document/282162 |volume= |pages= 183–188|doi=10.1109/DASC.1992.282162 |isbn=0-7803-0820-4 |access-date= |url-access=subscription}}</ref>
<ref name=IBM1981>{{cite journal
  | doi = 10.1147/rd.255.0405
  | last1 = Olsen
  | first1 = P.F.
  | last2=  Orrange
  | first2= R.J.
  | title = Real-Time Systems for Federal Applications: A Review of Significant Technological Developments
  | journal = IBM Journal of Research and Development
  | volume = 25
  | issue = 5
  | pages = 405–416
  | date = September 1981}}</ref>
<ref name=MMP>{{cite journal |doi=10.1145/384281.808211 |title=Applications of pipelining to firmware |date=1984 |last1=Proulx |first1=David M. |journal=ACM SIGMICRO Newsletter |volume=15 |issue=4 |pages=37–46 }}</ref>
}}