On Sunday, March 9, 2014 12:21:07 AM UTC-6, Alexander Heger wrote:
{snip}

hi Alexander, Steve,  this is one of Mike Cowlishaw's papers regarding decimal 
floating point, hardware decimal floating point, and the IEEE 854 1987 standard,
and other topics.  He mentions the TI89, and others, that use decimal floating
point arithmetic, with citations. 

http://www.cs.tufts.edu/~nr/cs257/archive/mike-cowlishaw/decimal-arith.pdf

Its a good read.