On Tue, 11 Jun 2013 18:04:57 -0500, Mike Schwab wrote: >On Tue, Jun 11, 2013 at 8:30 AM, Pew, Curtis G wrote: >> On Jun 11, 2013, at 8:18 AM, Paul Gilmartin wrote: >> >>> 2**18 + 2**9 + 12. A peculiar number. I wonder how they chose >>> that? >> >> For what it's worth, that's 236 * 1113, the latter being the size of a 3390 >> mod 1. I don't know why they went with 236 (2**2 * 59) though. > >Highest multiple of 1113 that is under 2 ** 18 (using 18 bits of the >x'ccccCCChrr' field (is c'CCHHR' for non-EAV volumes.) > Ah, but 236 * 1113 = 262668 is not <= 2 ** 18
>Here is a list of OS/360 to z/OS x.xx volumes by number of bits used >for number of cylinders. > > http://www.hercules-390.eu/hercload.html >Bits Cyls Model GB 3390-Model/ Bits used >First used > ... >18 261,555 235. 222.310 M0235 B18 EAV2 >3390-EAV 2bits z/OS V1.10 > ... is better. Should I doubt the 262668 posted earlier? -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
