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Posted By

SVS
on 2007-05-04
11:25:53
 Re: Indirect,X

@siz: indeed! In fact all old accountant machines and many old O.S. worked in BCD.

@Bionic: with BCD you have 2 digit in 1 byte. The convertion to string is easy (BCD nibble + $30) and the convertion to screencodes is the same.

With BCD, programmer had not to care about the skipping $A...$F, carry was automatic and overflow too.
So called 'Registers' were clusters of 8 BCD bytes then achieving values from -999.999.999.999.999 to +-999.999.999.999.999 not bad!!!
Oops this remember me something (BalSys) happy happy



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