Appendix A of the OS/8 Handbook, "Character Codes, ASCII Character Set", has both 8-bit octal and 6-bit octal character codes. I have a paper copy. There may be a scanned copy online. Let me know if you want me to scan the appendix from my copy.
Larry Baker US Geological Survey 650-329-5608 [email protected] On May 10, 2010, at 9:00 AM, [email protected] wrote: > Date: Mon, 10 May 2010 17:02:49 +0300 > From: Sergii Kolisnyk <[email protected]> > Subject: [Simh] 6-bit variants of ASCII (AKA DEC SIXBIT) > To: [email protected] > Message-ID: > <[email protected]> > Content-Type: text/plain; charset=ISO-8859-1 > > Hello! > > Could you give me some web links to definitive manuals on DEC SIXBIT > codes? > If there are none, may be somebody could take time and tell from his > memories > about _different_variants_ ? > > I'm putting what I can find or remember here: > http://en.wikipedia.org/wiki/Sixbit_code_pages > I have found ECMA-1 standard (may be you know its ANSI and/or ISO > names?) > http://www.ecma-international.org/publications/files/ECMA-ST-WITHDRAWN/ECMA-1,%201st%20Edition,%20March%201963.pdf > > ECMA-5 tells to use DEL-escaping to represent full ASCII code space: > http://www.ecma-international.org/publications/files/ECMA-ST-WITHDRAWN/ECMA-5,%203rd%20Edition,%20June%201970.pdf > > I'm also wondering how it got into ISO/IEC 7811-2 > http://cardforum.cardprom.ru/standard/ISO-card-magnetic18.gif > > Could you correct my mistakes, if any? > (As I remember, PDP-8 used other variant, with halves of code space > swapped, so A got 01 code.) > > Thank you in advance! > > Best regards, > Sergii Kolisnyk _______________________________________________ Simh mailing list [email protected] http://mailman.trailing-edge.com/mailman/listinfo/simh
