Three digit is generally first or second generation. 3210, 3211 and 3215 are not terminals. 2301, 2303, 2321 and 7320 are DASD but not disks. 7340 is a tape drive. 2860, 2870 and 2880 are both 360 and 370. 14xx are second generation. While S/360 processors were generally 20xx, the 195 was 2195 (the 370 version was 3195.)
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of Charles Mills [charl...@mcn.org] Sent: Sunday, March 21, 2021 5:19 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: z/TPF questions x2yz would be a terminal type device (e.g. 2260, 3270) x3yz would be a disk type device (e.g. 2301, 2311, 2314, 3330, 3390) x4yz would be a tape type device (e.g. 2400) x5yz would be a card type device (e.g. 2540) x7yz would be telecommunications type device (e.g. 2701, 2780, 3780) In all cases x=2 would be "second generation," i.e. System 360; x=3 would the "third generation," i.e. System 370. x=1 would be first generation and is a different numbering scheme -- e.g. 1052 is a console, 1403 is a printer. IIRC the S/360 CPUs were, e.g., 2040 for the 360/40 and the S/370 CPUs were, e.g., 3155 for the ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
