Binary-coded decimal: Difference between revisions

Revision as of 01:34, 25 April 2024

Revision as of 01:36, 25 April 2024

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On the [[IBM 1130]] and [[IBM 1800|1800]], packed BCD is supported in software by IBM's Commercial Subroutine Package.

Today, BCD data is still heavily used in IBM databases such as [[IBM Db2]] and processors such as [[z/Architecture]] and [[POWER6]] and later [[Power ISA]] processors. In these products, the BCD is usually zoned BCD (as in EBCDIC or ASCII), packed BCD (two decimal digits per byte), or "pure" BCD encoding (one decimal digit stored as BCD in the low four bits of each byte). All of these are used within hardware registers and processing units, and in software. To convert packed decimals in EBCDIC table unloads to readable numbers, you can use the OUTREC FIELDS mask of the JCL utility DFSORT.<ref name="IBM_ZOS_2016"/>

=== Other computers ===