I think the ASCII machines converted punched tape to ASCII. On Tue, Nov 20, 2018 at 3:02 PM Paul Gilmartin <0000000433f07816-dmarc-requ...@listserv.ua.edu> wrote: > > On Tue, 20 Nov 2018 20:13:35 +0000, Seymour J Metz wrote: > > >The ASCII bit in the PSW affected only the decimal instructions, including > >UNPK. > > > Doesn't UNPK just swap nybbles of the rightmost byte and set all other > zone bits to 0 regardless of character set? > > >It did not affect how the card reader read zoned numeric data. > > > I doubt that any IBM card reader had any awareness of zoned numeric -- > bytes wuz bytes. > > I understand the most primitive ASCII-EBCDIC mapping was derived > from Hollerith punch cards in the specification of ASCII. Was there > ever a (non-IBM, surely) card reader that conveted Hollerith to ASCII? > > -- gil > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
-- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
