27 Jun
2009
27 Jun
'09
7:10 p.m.
On Jun 27, 2009, at 9:52 PM, Guy Sotomayor wrote:
Note: that there are iPhone HP calculators that are
based on Eric's
code long before HP posted their versions that were referenced in
the Macworld article.
Rumor has it that HP contacted Eric for his ROM images because they
(HP) *lost* all of the bits.
What Eric has done is truly phenomenal. He *reverse engineered*
the ROM data *and* the CPU instruction set from the actual
calculators (according to Eric you can't just read the ROM, you
have to execute the instructions). Eric's emulations *are* HP
calculators in all but silicon and plastic. They emulate the
underlying CPU and run the captured ROM images from the actual
calculators.
This is nothing short of *awesome*.
-Dave
--
Dave McGuire
Port Charlotte, FL