Talk:Binary-coded decimal

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x87

That article mentions the x87 implementation of BCD, but doesn't quite explain it. x87 converts external BCD integers to internal floating point values in its internal 64 bit significant format. With a little luck and careful programming, you can get the appropriate integer results. It doesn't store BCD values in its internal registers. Gah4 (talk) 12:57, 28 March 2020 (UTC)[reply]

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This article was copy edited by BroVic, a member of the Guild of Copy Editors, on 18 May 2020.Guild of Copy EditorsWikipedia:WikiProject Guild of Copy EditorsTemplate:WikiProject Guild of Copy EditorsGuild of Copy Editors

This is a great article. Will need additional editing by subject matter experts. It would be good to see this on our project's Request page for further improvements. Thank you. — BroVic (talk) 18:31, 18 May 2020 (UTC)[reply]

clock

I have a commercially produced clock that displays BCD time in the manner shown in the diagram, with six vertical BCD digits. It also has the ability, given the same LED arrangement, to give binary hours, minutes, and seconds horizontally. Interesting how, given that arrangement, 5 bits are available for hours (24 hour mode), and six each for minutes and seconds. I got mine used, so I don't know where they come from. Gah4 (talk) 16:59, 1 June 2020 (UTC)[reply]

implemented in all IBM mainframe hardware since then

The article says: implemented in all IBM mainframe hardware since then. For low-end S/360 models, decimal was optional. (As was floating point. Presumably one would get one or the other.) Also, the 360/91 doesn't have the decimal instructions, with the OS doing software emulation. (It has CVB and CVD, which are used in the emulation.) Gah4 (talk) 11:39, 6 August 2020 (UTC)[reply]