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From: Fraser Wilson <newsfraser@blancolioni.org>
Newsgroups: comp.lang.ada
Subject: Re: Floating Decimal Package/Library?
Date: 24 Jul 2002 18:17:56 +0200
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Darren New <dnew@san.rr.com> writes:

> The 6502 let you add two BCD digits using a binary add, then had an
> instruction (adjust decimal?) that would look at the half-carry flag and
> convert it back to BCD with the appropriate carry bit set.

That's the 8086 I think.  The 6502 has a decimal flag in the status
word that, when set, causes all add and subtract instructions to treat
their arguments as the BCD you mentioned.

What an odd feature for a tiny little processor.

Fraser.