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'''[[Main Page|Home]] * [[Hardware]] * PDP-6'''
[[FILE:flipflop6as.jpg|border|right|thumb|link=http://ljkrakauer.com/LJK/essays/bits.htm|PDP-6 [[Memory#FlipFlop|Flip-Flop]] <ref>[http://ljkrakauer.com/LJK/essays/bits.htm Bits] by [[Lawrence J. Krakauer]]</ref> <ref>[http://bitsavers.trailing-edge.com/pdf/dec/pdp6/F-67_circuitInstr_May66.pdf PDP-6 Circuit Instruction Manual, © 1966, Digital Equipment Corporation] (pdf)</ref> <ref>[http://www.computerhistory.org/collections/accession/102618955 PDP-6 Details] from [[The Computer History Museum]]</ref> <ref>[http://archive.computerhistory.org/resources/still-image/DEC/PDP-6/ /resources/still-image/DEC/PDP-6/] from [[The Computer History Museum]]</ref> ]]
'''PDP-6''', (Programmed Data Processor-6)<br/>
[[Digital Equipment Corporation|DEC's]] first 36-bit <ref>[http://ljkrakauer.com/LJK/60s/moby.htm Moby Memory] by [[Lawrence J. Krakauer]]</ref> personal [https://en.wikipedia.org/wiki/Mainframe_computer mainframe computer] developed and manufactured from 1963, and shipped since 1964 <ref>[http://www.vortex.com/pdp6.pdf PDP-6 Price List, February 1, 1964] (pdf)</ref>, influential for the later [[PDP-10]] with almost identical instruction sets. Addressing remained 18-bit, as in earlier DEC machines, allowing for a 256 Kiword main [https://en.wikipedia.org/wiki/Magnetic-core_memory magnetic core memory], optionally with 16 words of fast memory constructed from discrete [https://en.wikipedia.org/wiki/Transistor transistor] [[Memory#FlipFlop|flip-flops]] <ref>[https://en.wikipedia.org/wiki/PDP-6 PDP-6 from Wikipedia]</ref>. Output could be displayed on a [[Lawrence J. Krakauer#DEC340|DEC 340 display]] <ref>[http://ljkrakauer.com/LJK/60s/resign.htm I resign] by [[Lawrence J. Krakauer]]</ref> <ref>[http://ljkrakauer.com/LJK/60s/chess1.htm Chess stories] by [[Lawrence J. Krakauer]]</ref> <ref>Image of DEC 340 at [http://design.osu.edu/carlson/history/lesson3.html A Critical History of Computer Graphics and Animation | Section 3: The industry evolves]</ref> <ref>[http://www.aceware.com.au/acms/HistoryOfAcmsWA.htm History of Australian Computer Museum Society WA | PDP-6]</ref> <ref>James Gerard Fiasconaro ('''1970'''). ''[http://www.worldcat.org/title/computer-controlled-graphical-display-processor/oclc/227599012 A Computer-Controlled Graphical Display Processor]''. [https://en.wikipedia.org/wiki/MIT_Computer_Science_and_Artificial_Intelligence_Laboratory#Project_MAC Project MAC], [[Massachusetts Institute of Technology|MIT]], [http://publications.csail.mit.edu/lcs/pubs/pdf/MIT-LCS-TR-071.pdf pdf]</ref>.
Already supporting [https://en.wikipedia.org/wiki/Time-sharing Time-sharing], the operating system used was an early version of what later became [https://en.wikipedia.org/wiki/TOPS-10 TOPS-10], and several sites made custom versions of the system, available as source code. The PDP-6 with serial number 2 was donated to [[Massachusetts Institute of Technology|MIT's]] <ref>[https://en.wikipedia.org/wiki/Mac_Hack Mac Hack from Wikipedia]</ref> [https://en.wikipedia.org/wiki/MIT_Computer_Science_and_Artificial_Intelligence_Laboratory#Project_MAC Project MAC], where it was used to develop the [https://en.wikipedia.org/wiki/Incompatible_Timesharing_System ITS] operating system. [[Richard Greenblatt]] et al. developed the [[Mac Hack|Mac Hack VI]] chess program entirely in [[MIDAS]], the PDP-6 macro assembler.
=Photos=
==Bell and Kotok==
[[FILE:Dec pdp-6.lg.jpg|none|border|text-bottom|640px]]
[https://en.wikipedia.org/wiki/Gordon_Bell Gordon Bell] and [[Alan Kotok]] at PDP-6 in 1964 <ref>[http://www.computerhistory.org/collections/accession/102618954 PDP-6 with Gordon Bell and Alan Kotok] from [[The Computer History Museum]], [https://en.wikipedia.org/wiki/PDP-6 PDP-6 from Wikipedia]</ref>
==Robert Q==
First tournament game by a computer, Carl Wagner (2190) - [[Mac Hack#RobertQ|Robert Q]], January 21, 1967 <ref>''[http://news.google.com/newspapers?nid=1928&dat=19670123&id=O2ggAAAAIBAJ&sjid=1GYFAAAAIBAJ&pg=2308,2313204 MIT Computer Loses to Human in Chess]''. [https://en.wikipedia.org/wiki/Sun_Journal_%28Lewiston%29 Sun Journal (Lewiston)], January 23, 1967, [https://en.wikipedia.org/wiki/Google_News Google News]</ref>
[[FILE:RobertQ1967.JPG|none|border|text-bottom|640px|link=http://news.google.com/newspapers?nid=1928&dat=19670123&id=O2ggAAAAIBAJ&sjid=1GYFAAAAIBAJ&pg=2308,2313204]]
[http://www.linkedin.com/pub/allen-moulton/10/833/19b Allen Moulton] and [[Bill Gosper|R. William Gosper]] operating "Robert Q" on a PDP-6 <ref>[http://www.apimages.com/Search.aspx?st=k&remem=x&entity=&kw=Carl+Wagner%2C+1967%2C+MIT+Chess&intv=None&shgroup=-10&sh=10 AP :: Images :: Search Results :: Carl Wagner, 1967, MIT Chess]</ref>
=See also=
* [[Bill Gosper#HAKMEM169|HAKMEM 169]] to [[Population Count|count the ones]] in a [[PDP-6]]/[[PDP-10]] 36-bit word
* [[Bill Gosper#HAKMEM175|HAKMEM 175]] by [[Bill Gosper]] for [[Traversing Subsets of a Set#Snoob|Subsets with equal Cardinality]]
* [[IBM 7090]]
* [[Honeywell 6000]]
* [[Mac Hack|Mac Hack VI]]
* [[PDP-1]]
* [[PDP-8]]
* [[PDP-10]]
* [[PDP-11]]
=External Links=
* [https://en.wikipedia.org/wiki/PDP-6 PDP-6 from Wikipedia]
* [https://en.wikipedia.org/wiki/Programmed_Data_Processor Programmed Data Processor from Wikipedia]
* [http://ed-thelen.org/comp-hist/pdp-6.html PDP-6] by [http://ed-thelen.org/ Ed Thelen]
* [http://archive.computerhistory.org/resources/text/dec/dec.digital_%28DEC%29_timeline_1957-1997.102630354/36-bit.htm 36-bit Timeline] from [[The Computer History Museum]]
* [http://archive.computerhistory.org/resources/still-image/DEC/PDP-6/ archive.computerhistory.org - /resources/still-image/DEC/PDP-6/] from [[The Computer History Museum]]
* [http://archive.computerhistory.org/resources/text/DEC/pdp-6/ archive.computerhistory.org - /resources/text/DEC/pdp-6/] from [[The Computer History Museum]]
* [http://www.computerhistory.org/collections/accession/102630365 PDP-6 arithmetic processor 166 : instruction manual. Volume 1] from [[The Computer History Museum]]
* [http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/pdp6/ /pdf/dec/pdp6] from [http://bitsavers.informatik.uni-stuttgart.de/ bitsavers.org]
* [http://ljkrakauer.com/LJK/60s/moby.htm Moby Memory] by [[Lawrence J. Krakauer]]
* [http://ljkrakauer.com/LJK/essays/bits.htm Bits] by [[Lawrence J. Krakauer]]
* [http://dspace.mit.edu/handle/1721.1/5899 DSpace@MIT : PDP-6 LISP]
* [http://dspace.mit.edu/handle/1721.1/5868 DSpace@MIT : Incorporating MIDAS Routines into PDP-6 LISP]
* [http://www.vintchip.com/mainframe/PDP-6/PDP-6.html Digital Equipment Corp PDP-6 1964]
=References=
<references />
'''[[Hardware|Up one Level]]'''
[[FILE:flipflop6as.jpg|border|right|thumb|link=http://ljkrakauer.com/LJK/essays/bits.htm|PDP-6 [[Memory#FlipFlop|Flip-Flop]] <ref>[http://ljkrakauer.com/LJK/essays/bits.htm Bits] by [[Lawrence J. Krakauer]]</ref> <ref>[http://bitsavers.trailing-edge.com/pdf/dec/pdp6/F-67_circuitInstr_May66.pdf PDP-6 Circuit Instruction Manual, © 1966, Digital Equipment Corporation] (pdf)</ref> <ref>[http://www.computerhistory.org/collections/accession/102618955 PDP-6 Details] from [[The Computer History Museum]]</ref> <ref>[http://archive.computerhistory.org/resources/still-image/DEC/PDP-6/ /resources/still-image/DEC/PDP-6/] from [[The Computer History Museum]]</ref> ]]
'''PDP-6''', (Programmed Data Processor-6)<br/>
[[Digital Equipment Corporation|DEC's]] first 36-bit <ref>[http://ljkrakauer.com/LJK/60s/moby.htm Moby Memory] by [[Lawrence J. Krakauer]]</ref> personal [https://en.wikipedia.org/wiki/Mainframe_computer mainframe computer] developed and manufactured from 1963, and shipped since 1964 <ref>[http://www.vortex.com/pdp6.pdf PDP-6 Price List, February 1, 1964] (pdf)</ref>, influential for the later [[PDP-10]] with almost identical instruction sets. Addressing remained 18-bit, as in earlier DEC machines, allowing for a 256 Kiword main [https://en.wikipedia.org/wiki/Magnetic-core_memory magnetic core memory], optionally with 16 words of fast memory constructed from discrete [https://en.wikipedia.org/wiki/Transistor transistor] [[Memory#FlipFlop|flip-flops]] <ref>[https://en.wikipedia.org/wiki/PDP-6 PDP-6 from Wikipedia]</ref>. Output could be displayed on a [[Lawrence J. Krakauer#DEC340|DEC 340 display]] <ref>[http://ljkrakauer.com/LJK/60s/resign.htm I resign] by [[Lawrence J. Krakauer]]</ref> <ref>[http://ljkrakauer.com/LJK/60s/chess1.htm Chess stories] by [[Lawrence J. Krakauer]]</ref> <ref>Image of DEC 340 at [http://design.osu.edu/carlson/history/lesson3.html A Critical History of Computer Graphics and Animation | Section 3: The industry evolves]</ref> <ref>[http://www.aceware.com.au/acms/HistoryOfAcmsWA.htm History of Australian Computer Museum Society WA | PDP-6]</ref> <ref>James Gerard Fiasconaro ('''1970'''). ''[http://www.worldcat.org/title/computer-controlled-graphical-display-processor/oclc/227599012 A Computer-Controlled Graphical Display Processor]''. [https://en.wikipedia.org/wiki/MIT_Computer_Science_and_Artificial_Intelligence_Laboratory#Project_MAC Project MAC], [[Massachusetts Institute of Technology|MIT]], [http://publications.csail.mit.edu/lcs/pubs/pdf/MIT-LCS-TR-071.pdf pdf]</ref>.
Already supporting [https://en.wikipedia.org/wiki/Time-sharing Time-sharing], the operating system used was an early version of what later became [https://en.wikipedia.org/wiki/TOPS-10 TOPS-10], and several sites made custom versions of the system, available as source code. The PDP-6 with serial number 2 was donated to [[Massachusetts Institute of Technology|MIT's]] <ref>[https://en.wikipedia.org/wiki/Mac_Hack Mac Hack from Wikipedia]</ref> [https://en.wikipedia.org/wiki/MIT_Computer_Science_and_Artificial_Intelligence_Laboratory#Project_MAC Project MAC], where it was used to develop the [https://en.wikipedia.org/wiki/Incompatible_Timesharing_System ITS] operating system. [[Richard Greenblatt]] et al. developed the [[Mac Hack|Mac Hack VI]] chess program entirely in [[MIDAS]], the PDP-6 macro assembler.
=Photos=
==Bell and Kotok==
[[FILE:Dec pdp-6.lg.jpg|none|border|text-bottom|640px]]
[https://en.wikipedia.org/wiki/Gordon_Bell Gordon Bell] and [[Alan Kotok]] at PDP-6 in 1964 <ref>[http://www.computerhistory.org/collections/accession/102618954 PDP-6 with Gordon Bell and Alan Kotok] from [[The Computer History Museum]], [https://en.wikipedia.org/wiki/PDP-6 PDP-6 from Wikipedia]</ref>
==Robert Q==
First tournament game by a computer, Carl Wagner (2190) - [[Mac Hack#RobertQ|Robert Q]], January 21, 1967 <ref>''[http://news.google.com/newspapers?nid=1928&dat=19670123&id=O2ggAAAAIBAJ&sjid=1GYFAAAAIBAJ&pg=2308,2313204 MIT Computer Loses to Human in Chess]''. [https://en.wikipedia.org/wiki/Sun_Journal_%28Lewiston%29 Sun Journal (Lewiston)], January 23, 1967, [https://en.wikipedia.org/wiki/Google_News Google News]</ref>
[[FILE:RobertQ1967.JPG|none|border|text-bottom|640px|link=http://news.google.com/newspapers?nid=1928&dat=19670123&id=O2ggAAAAIBAJ&sjid=1GYFAAAAIBAJ&pg=2308,2313204]]
[http://www.linkedin.com/pub/allen-moulton/10/833/19b Allen Moulton] and [[Bill Gosper|R. William Gosper]] operating "Robert Q" on a PDP-6 <ref>[http://www.apimages.com/Search.aspx?st=k&remem=x&entity=&kw=Carl+Wagner%2C+1967%2C+MIT+Chess&intv=None&shgroup=-10&sh=10 AP :: Images :: Search Results :: Carl Wagner, 1967, MIT Chess]</ref>
=See also=
* [[Bill Gosper#HAKMEM169|HAKMEM 169]] to [[Population Count|count the ones]] in a [[PDP-6]]/[[PDP-10]] 36-bit word
* [[Bill Gosper#HAKMEM175|HAKMEM 175]] by [[Bill Gosper]] for [[Traversing Subsets of a Set#Snoob|Subsets with equal Cardinality]]
* [[IBM 7090]]
* [[Honeywell 6000]]
* [[Mac Hack|Mac Hack VI]]
* [[PDP-1]]
* [[PDP-8]]
* [[PDP-10]]
* [[PDP-11]]
=External Links=
* [https://en.wikipedia.org/wiki/PDP-6 PDP-6 from Wikipedia]
* [https://en.wikipedia.org/wiki/Programmed_Data_Processor Programmed Data Processor from Wikipedia]
* [http://ed-thelen.org/comp-hist/pdp-6.html PDP-6] by [http://ed-thelen.org/ Ed Thelen]
* [http://archive.computerhistory.org/resources/text/dec/dec.digital_%28DEC%29_timeline_1957-1997.102630354/36-bit.htm 36-bit Timeline] from [[The Computer History Museum]]
* [http://archive.computerhistory.org/resources/still-image/DEC/PDP-6/ archive.computerhistory.org - /resources/still-image/DEC/PDP-6/] from [[The Computer History Museum]]
* [http://archive.computerhistory.org/resources/text/DEC/pdp-6/ archive.computerhistory.org - /resources/text/DEC/pdp-6/] from [[The Computer History Museum]]
* [http://www.computerhistory.org/collections/accession/102630365 PDP-6 arithmetic processor 166 : instruction manual. Volume 1] from [[The Computer History Museum]]
* [http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/pdp6/ /pdf/dec/pdp6] from [http://bitsavers.informatik.uni-stuttgart.de/ bitsavers.org]
* [http://ljkrakauer.com/LJK/60s/moby.htm Moby Memory] by [[Lawrence J. Krakauer]]
* [http://ljkrakauer.com/LJK/essays/bits.htm Bits] by [[Lawrence J. Krakauer]]
* [http://dspace.mit.edu/handle/1721.1/5899 DSpace@MIT : PDP-6 LISP]
* [http://dspace.mit.edu/handle/1721.1/5868 DSpace@MIT : Incorporating MIDAS Routines into PDP-6 LISP]
* [http://www.vintchip.com/mainframe/PDP-6/PDP-6.html Digital Equipment Corp PDP-6 1964]
=References=
<references />
'''[[Hardware|Up one Level]]'''
