HP Calculator Emulators for the Commodore 64 and ATARI 800XL

[Dave Britten]

I just had a chance to play around with the HP-55 emulator on my C64 tonight. The sharpness of the digits is outstanding with the new s-video cable I bought. I typed in the direct reduction loan program from the 55 Mathematics book and calculated a payment amount.

Anybody benchmarked these against the real things yet? The 55 emulator seemed pretty responsive, but I don't have a real 55 to compare it with. I think the 80 has a few routines that take some time to execute (like solving for i%). Those might make good tests.