Predictably--I am the pedant who insists on distinguishing KB and KiB--Bill Fairchild's point seems to me to be important. Quaint, long familiar terminology should be avoided where it is misleading.
The original System/360 scheme was simple and in its way elegant. 01F---decodable unambiguously into (multiplexor) channel 0, control unit 1, and that control unit's device F or 15---was, for example, the usual device address of the card punch circa 1965, when punches were still real rather than virtual devices. Whatever its historical interest may be, this scheme and its progressively less elegant, patched together successors are now architecturally irrelevant; and it is time to 1) give the old terminology a decent burial and 2) talk about device numbers instead. On 2/16/12, R.S. <r.skoru...@bremultibank.com.pl> wrote: > W dniu 2012-02-16 15:14, Bill Fairchild pisze: > They haven't been device > "addresses" since 1983 with the advent of MVS/XA, in spite of the fact that > people who had been calling them device addresses since 1964, for the most > part, still call them device addresses. They have been device "numbers" > since XA's redesign of the I/O architecture. And developers and documenters > still create screen displays and tech doc with the now 31-years-obsolete > nomenclature. I complain now and then to deaf ears. But that's ok, since I > still call z/OS by the name MVS. At least I don't still call it "OS/VS2 > Release 2." Lol Yes, in z/OS (OS/390,...) there are device numbers, not > adresses. Device numbers replaced device addresses in some sense (like VARY > command, etc.). However people still use "device address" in place of > device number. We discussed about fifth byte of the device number, and > nobody was harmed by usage of "device address". Everyone knew what are we > talking about. IMHO that's the most important. Similar "problems": KiB vs > kB (1024 vs 1000) Unix System Services vs USS Radoslaw Skorupka Lodz, Poland > tej wiadomo ci mo e zawiera informacje prawnie chronione Banku > przeznaczone wy cznie do u ytku s bowego adresata. Odbiorc e by jedynie jej > adresat z wy czeniem dost pu os b trzecich. Je eli nie jeste adresatem > niniejszej wiadomo ci lub pracownikiem upowa nionym do jej przekazania > adresatowi, informujemy, e jej rozpowszechnianie, kopiowanie, > rozprowadzanie lub inne dzia anie o podobnym charakterze jest prawnie > zabronione i mo e by karalne. Je eli otrzyma wiadomo omy kowo, prosimy > niezw ocznie zawiadomi nadawc wysy c odpowied oraz trwale usun wiadomo > czaj c w to wszelkie jej kopie wydrukowane lub zapisane na dysku. This > e-mail may contain legally privileged information of the Bank and is > intended solely for business use of the addressee. This e-mail may only be > received by the addressee and may not be disclosed to any third parties. If > you are not the intended addressee of this e-mail or the employee authorised > to forward it to the addressee, be advised that any dissemination, copying, > distribution or any other similar activity is legally prohibited and may be > punishable. If you received this e-mail by mistake please advise the sender > immediately by using the reply facility in your e-mail software and delete > permanently this e-mail including any copies of it either printed or saved > to hard drive. BRE Bank SA, 00-950 Warszawa, ul. Senatorska 18, tel. +48 > (22) 829 00 00, fax +48 (22) 829 00 33, www.brebank.pl, e-mail: > i...@brebank.pl d Rejonowy dla m. st. Warszawy XII Wydzia Gospodarczy > Krajowego Rejestru S dowego, nr rejestru przedsi biorc w KRS 0000025237, > NIP: 526-021-50-88. ug stanu na dzie 01.01.2012 r. kapita zak adowy BRE > Banku SA (w ca ci wp acony) wynosi 168.410.984 z otych. > ---------------------------------------------------------------------- For > IBM-MAIN subscribe / signoff / archive access instructions, send email to > lists...@bama.ua.edu with the message: INFO IBM-MAIN -- John Gilmore, Ashland, MA 01721 - USA ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
