Editing Apollo Guidance Computer (section)

==External links==
{{Commons category|Apollo Guidance Computer}}

;Documentation on the AGC and its development
*[http://authors.library.caltech.edu/5456/01/hrst.mit.edu/hrs/apollo/public/archive/1689.pdf ''AGC4 Memo #9, Block II Instructions''] – The infamous memo that served as de facto official documentation of the instruction set
*[http://www.hq.nasa.gov/office/pao/History/computers/Ch2-5.html ''Computers in Spaceflight: The NASA Experience''] – By James Tomayko (Chapter 2, Part 5, ''The Apollo guidance computer: Hardware'')
*[https://web.archive.org/web/20040719084435/http://www.dfrc.nasa.gov/History/Publications/PDF/DFBW.pdf ''Computers Take Flight''] – By James Tomayko
*[http://klabs.org/history/history_docs/ech/agc_scott.pdf ''The Apollo Guidance Computer - A Users View''] ([[Portable Document Format|PDF]]) – By David Scott, Apollo mission astronaut
*[http://www.klabs.org/mapld04/papers/g/g202_portillo_p.pdf ''Lunar Module Attitude Controller Assembly Input Processing''] ([[Portable Document Format|PDF]]) – By José Portillo Lugo, History of Technology
*[https://web.archive.org/web/20070612155102/http://authors.library.caltech.edu/5456/01/hrst.mit.edu/hrs/apollo/public/ The MIT AGC Project] – With comprehensive document archive
**[http://authors.library.caltech.edu/5456/01/hrst.mit.edu/groups/apollo/bibliography/q-and-a-fetch-comments.tcl_lastquestion_id=00016K&topic_id=11&topic=Document%20Library&entryformat=S&sortorder=author.html Luminary software source code listing], for Lunar Module guidance computer. (nb. 622 Mb)
**[http://authors.library.caltech.edu/5456/01/hrst.mit.edu/groups/apollo/bibliography/q-and-a-fetch-comments.tcl_lastquestion_id=000156&topic_id=11&topic=Document%20Library&entryformat=S&sortorder=author.html Colossus software source code listing], for Command Module guidance computer. (nb. 83 Mb)
*[https://archive.today/20110807043850/http://collections.nasm.si.edu/code/emuseum.asp?style=browse&currentrecord=1&page=search&profile=objects&searchdesc=A19720340000&quicksearch=A19720340000&newvalues=1&newstyle=single&newcurrentrecord=1 National Air and Space Museum's AGC Block I] and [https://archive.today/20110807043856/http://collections.nasm.si.edu/code/emuseum.asp?style=browse&currentrecord=1&page=search&profile=objects&searchdesc=A19760811000&quicksearch=A19760811000&newvalues=1&newstyle=single&newcurrentrecord=1 Dsky]
*[http://authors.library.caltech.edu/5456/01/hrst.mit.edu/hrs/apollo/public/blairsmith3.htm Annotations to Eldon Hall's Journey to the Moon] – An AGC system programmer discusses some obscure details of the development of AGC, including specifics of Ed's Interrupt

;Documentation of AGC hardware design, and particularly the use of the new integrated circuits in place of transistors
*[http://klabs.org/history/ech/ic_packages/index.htm AGC Integrated Circuit Packages]
*[http://klabs.org/history/history_docs/integrated_circuits/ic4-po.pdf Integrated Circuits in the Apollo Guidance Computer]

;Documentation of AGC software operation
*[https://www.nasa.gov/wp-content/uploads/static/history/alsj/a15/a15delco.pdf Delco Electronics, Apollo 15] - Manual for CSM and LEM AGC software used on the Apollo 15 mission, including detailed user interface procedures, explanation of many underlying algorithms and limited hardware information. Note that this document has over 500 pages and is over 150 megabytes in size.
*[http://googlecode.blogspot.com/2009/07/apollo-11-missions-40th-anniversary-one.html Source code] for Command Module code (Comanche054) and Lunar Module code (Luminary099) as text.
*[https://github.com/chrislgarry/Apollo-11/ GitHub Complete Source Code] Original Apollo 11 Guidance Computer (AGC) source code for the command and lunar modules.

;Some AGC-based projects and simulators
*[http://klabs.org/history/build_agc/ AGC Replica] – John Pultorak's successful project to build a hardware replica of the Block I AGC in his basement. Mirror site: [https://web.archive.org/web/20110222113340/http://echoesofapollo.com/resources/apollo-guidance-computer/ AGC Replica].
*[http://www.ibiblio.org/apollo/index.html Virtual AGC Home Page] – Ronald Burkey's AGC simulator, plus source and binary code recovery for the Colossus (CSM) and Luminary (LEM) SW.
*[http://www.svtsim.com/moonjs/agc.html Moonjs] – A web-based AGC simulator based on Virtual AGC.
*[http://www.eaglelander3d.com/ Eagle Lander 3D] Shareware Lunar Lander Simulator with a working AGC and DSKY (Windows only).
* [https://www.youtube.com/watch?v=Bh_gP5aF3ys AGC restarted 45 years later] – youtube

'''Feature Stories'''
*[https://www.youtube.com/watch?v=ndvmFlg1WmE ''Computer for Apollo''](1965) [[MIT]] Science Reporter – youtube
*[http://news.bbc.co.uk/1/hi/8148730.stm Weaving the way to the Moon] (BBC News)
* [https://www.wsj.com/video/restorers-try-to-get-lunar-module-guidance-computer-up-and-running/55526F08-0CC6-4CF7-9BCC-6BE6A20FE31C.html Restorers try to get lunar module guidance computer up and running] (Wall Street Journal)
*[https://www.youtube.com/watch?v=YIBhPsyYCiM ''Computer for Apollo'' video] – youtube

{{Apollo program hardware}}
{{Guidance Computer}}
{{CPU technologies}}

[[Category:Guidance computers]]
[[Category:Apollo program hardware]]
[[Category:Computer-related introductions in 1966]]
[[Category:Assembly language software]]
[[Category:Massachusetts Institute of Technology]]
[[Category:1975 disestablishments]]
[[Category:Spacecraft navigation instruments]]
[[Category:16-bit computers]]