Multics > Library > Articles > PL/I
29 May 2002

Version I PL/I Timeline

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PL/I Compiler, Source Pages

050100150200250300350400450500
. RAF started
. JDM started
01 Mar 680 - 1010 - 200
01 Apr 680 - 3030 - 250
01 May 680 - 1010 - 5050 - 250
. GDYC started
. PAB started
. BLW started
01 Jun 680 - 5050 - 105105 - 250
01 Jul 680 - 9090 - 160160 - 500
01 Aug 680 - 120120 - 175175 - 450
01 Sep 680 - 130130 - 195195 - 370
01 Oct 680 - 160160 - 220220 - 320
29 Oct 680 - 210210 - 255255 - 330
01 Dec 680 - 255255 - 280280 - 350
30 Dec 680 - 305305 - 330330 - 400
31 Jan 690 - 345345 - 398398 - 445
03 Mar 690 - 400400 - 425425 - 455
03 Apr 690 - 403403 - 425425 - 452
325 - 335 unit checked
325 - 335 coded
325 - 335 uncoded

Compiler coded 1 June 69, bootstrapped June 69 - Oct 69

Note: of the total pages, 25 represent the optimizer, which is not scheduled for first version.

Thanks to the late Jim Mills for a copy of this chart, which was drawn and posted monthly at CISL in 1968 and 69, showing the progress of coding the Version 1 PL/I compiler.

Redrawn in HTML by THVV 5/28/2002.