In <sn1pr0101mb1520f5dd2731242bc4a42286ce...@sn1pr0101mb1520.prod.exchangelabs.com>, on 12/02/2015 at 05:33 PM, J O Skip Robinson <[email protected]> said:
>One urban legend (not necessarily fiction) is an explanation for the >curious layout in EBCDIC coding. UL? It's well documented. See, e.g., IBM System/360 Principles of Operation, A22-6821-7[1], Appendix F, USASCII-8 and EBCDIC Charts, p. 150.2 >Of course there is one more hex value in the neighborhood than >there are letters in English, but why jump from D9 to E2 instead >of using E1 - E8? The story I heard in computer school is that the >EBCDIC ultimately derived from the punch card layout. As is implicit in the name, EBCDIC derives from BCD, which in turn derive from the card encodings. [1] http://bitsavers.org/pdf/ibm/360/princOps/A22-6821-7_360PrincOpsDec67.pdf -- Shmuel (Seymour J.) Metz, SysProg and JOAT ISO position; see <http://patriot.net/~shmuel/resume/brief.html> We don't care. We don't have to care, we're Congress. (S877: The Shut up and Eat Your spam act of 2003) ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
