This charset is the IBM's external binary coded decimal for interchange
coding. This is an eight bits code. The following three variants were
implemented in GNU recode
independently of RFC 1345:
EBCDIC
recode
us:ebcdic
conversion is identical to GNU
dd
ebcdic
conversion, and recode
ebcdic:us
conversion is identical to GNU dd
ascii
conversion. This
charset also represents the way Control Data Corporation relates EBCDIC
to 8-bits ASCII.
EBCDIC-CCC
recode
us:ebcdic-ccc
or ebcdic-ccc:us
conversions represent the way Concurrent Computer Corporation (formerly
Perkin Elmer) relates EBCDIC to 8-bits ASCII.
EBCDIC-IBM
recode
us:ebcdic-ibm
conversion is almost
identical to GNU dd
ibm
conversion. Given the exact
dd
ibm
conversion table, recode
once said:
Codes 91 and 213 both recode to 173 Codes 93 and 229 both recode to 189 No character recodes to 74 No character recodes to 106So I arbitrarily chose to recode 213 by 74 and 229 by 106. This makes the
EBCDIC-IBM
recoding reversible, but this is not necessarily
the best correction. In any case, I believe GNU dd
should be
corrected, and preferably, GNU dd
and GNU recode
should
agree on the same correction. So, this table may change once again.
RFC 1345 brings in recode
15 other EBCDIC charsets, and 21 other
charsets having EBCDIC in at least one of their alias names. You can
get a list of all these by executing:
recode -l | grep ebcdic
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