IBM's decNumber library replaces BCD20. It brings IEEE compliance. Correct implementation of lexical scope. RPN functions.
We switched the decimal number implementation from Hugh Steer's BCD to IBM's decNumber reference implementation, available at http://www2.hursley.ibm.com/decimal/#decNumber.
The first version of *fix core!
It's still pre-alpha status, and is far from any embeddable software, but already fun to play with on a Linux desktop machine.
Download at http://prdownloads.sourceforge.net/openrpn/sfix-core-0.1.tar.gz?download
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BCD20 library (http://www.voidware.com) has been integrated in the core. The choice between binary (native) or decimal arithmetic is done at compile time.