On Thu, 2011-12-01 at 12:51 +0200, Oleg Goldshmidt wrote: > IIRC, all x86 processors > provided BCD-related instructions (conversions to and from), but I > think even then it was slower than straightforward binary arithmetic. > It was slow because the machine instructions were for single bytes > only, but not for wider objects. I do not remember if it was in any > way related to 8087 math co-processors.
The 8086 had several instructions for adjusting results of arithmetic operations to conform to BCD values. The 8087 had the FBLD and FBSTP for loading and storing BCD values. --- Omer -- My Commodore 64 is suffering from slowness and insufficiency of memory; and its display device is grievously short of pixels. Can anyone help? My own blog is at http://www.zak.co.il/tddpirate/ My opinions, as expressed in this E-mail message, are mine alone. They do not represent the official policy of any organization with which I may be affiliated in any way. WARNING TO SPAMMERS: at http://www.zak.co.il/spamwarning.html _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
