> The early 1970s PDP-10 (and PDP-8) were the Digital Equipment forerunners of > the later DECSYSTEM and VAX computers.
No; the PDP-6 and PDP-10 were 36-bit machines. The PDP-5 and PDP-8 were 12 bit machines unrelated to the DECSYSTEM-10 and -20 and the VAX-11. The forerunner of the VAX was the 16-bit PDP-11. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of Hayim Sokolsky [hsokol...@rocketsoftware.com] Sent: Friday, August 18, 2023 3:42 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: vi The early 1970s PDP-10 (and PDP-8) were the Digital Equipment forerunners of the later DECSYSTEM and VAX computers. They were 6- and 7-bit machines. The Operating System of the PDP-10 that my High School timeshared on in 1973 was TOPS-10. I remember TECO well. Hayim Sokolsky (he/him/his) Director, Software Engineering Rocket Software, USA T: +1 561 479-7888 E: hsokol...@rocketsoftware.com<mailto:hsokol...@rocketsoftware.com> W:RocketSoftware.com The views I have expressed in this email are my own personal views, and are not endorsed or supported by, and do not necessarily express or reflect, the views, positions or strategies of my employer. From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Seymour J Metz Sent: Friday, August 18, 2023 1:56 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: vi EXTERNAL EMAIL What is "PDP"? The 16, 18 and 36 bit architectures are very different from each other. Of the top of my head: 12: LINC, LINC-8, 5, 8 16: 11 18: 1, 4, 7, 9, 15 32: VAX-11 36: 6, 10, DECSYSTEM-20 -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3<http://mason.gmu.edu/~smetz3> ________________________________________ From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of Paul Gilmartin [0000042bfe9c879d-dmarc-requ...@listserv.ua.edu] Sent: Friday, August 18, 2023 1:40 PM To: IBM-MAIN@LISTSERV.UA.EDU<mailto:IBM-MAIN@LISTSERV.UA.EDU> Subject: Re: vi On Fri, 18 Aug 2023 17:08:09 +0000, Gibney, Dave wrote: >In 1978, the class in PDP assembler used ed. Didn't mention vi. >Discovering vi was quite helpful to my progress in the class. > Mavens have cautioned me that I should master ed lest I am ever confined to a terminal lacking the capabilities needed by vi. I've ignored them, so far. 3278? But ed : vi :: TSO EDIT : ISPF. PDP? ed, not TECO? -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu<mailto:lists...@listserv.ua.edu> with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu<mailto:lists...@listserv.ua.edu> with the message: INFO IBM-MAIN ================================ Rocket Software, Inc. and subsidiaries ? 77 Fourth Avenue, Waltham MA 02451 ? Main Office Toll Free Number: +1 855.577.4323 Contact Customer Support: https://my.rocketsoftware.com/RocketCommunity/RCEmailSupport Unsubscribe from Marketing Messages/Manage Your Subscription Preferences - http://www.rocketsoftware.com/manage-your-email-preferences Privacy Policy - http://www.rocketsoftware.com/company/legal/privacy-policy ================================ This communication and any attachments may contain confidential information of Rocket Software, Inc. All unauthorized use, disclosure or distribution is prohibited. If you are not the intended recipient, please notify Rocket Software immediately and destroy all copies of this communication. Thank you. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN