On 24 January 2018 at 10:57, Seymour J Metz <sme...@gmu.edu> wrote: I wrote: >> What use is Set Sector without a block multiplexor channel (which >> allows disconnect/reconnect)? Were those available for some S/360 >> models? > Of course they were available; the model number for the 230 should be a clue > that it was announced for the S/360. For that matter, the model number of > the 2880 is a dead giveaway. Check bitsavers for the 360/85 and 360/195.
I understand the model numbering. But there's no *requirement* to use Set/Read Sector in your channel programing for a device that supports RPS; it's just a performance issue. A 3330 (and a fortiori, a 2305) should be able to be plugged into a 2860 selector channel and still work. Tony H. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
