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HP Calculator Emulators for the Commodore 64 and ATARI 800XL
01-03-2020, 04:37 AM
Post: #1
HP Calculator Emulators for the Commodore 64 and ATARI 800XL
Norbert Kehrer was interviewed recently on the FloppyDays Vintage Computing Podcast, episode 96, by Randy Kindig. Where it was mentioned he wrote a series of HP calculator emulators (35,45,55,80) for the Commodore and Atari computers! You can read about them here: http://members.aon.at/nkehrer/a800_c64_hp_emu.html

I'm very impressed with the HP-45 emulator I'm running on a real Commodore 64 at the moment.

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01-03-2020, 07:25 AM
Post: #2
RE: HP Calculator Emulators for the Commodore 64 and ATARI 800XL
Thank you for this link. Cool emulators for a cool computer ;-)
Tobie
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01-03-2020, 01:28 PM
Post: #3
RE: HP Calculator Emulators for the Commodore 64 and ATARI 800XL
That's a pretty interesting find. I'll have to put these on my Pi1541 sometime.
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01-03-2020, 01:49 PM
Post: #4
RE: HP Calculator Emulators for the Commodore 64 and ATARI 800XL
AWEsome!!!

TomC

(01-03-2020 04:37 AM)Craig Bladow Wrote:  Norbert Kehrer was interviewed recently on the FloppyDays Vintage Computing Podcast, episode 96, by Randy Kindig. Where it was mentioned he wrote a series of HP calculator emulators (35,45,55,80) for the Commodore and Atari computers! You can read about them here: http://members.aon.at/nkehrer/a800_c64_hp_emu.html

I'm very impressed with the HP-45 emulator I'm running on a real Commodore 64 at the moment.
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01-03-2020, 03:14 PM
Post: #5
RE: HP Calculator Emulators for the Commodore 64 and ATARI 800XL
(01-03-2020 01:28 PM)Dave Britten Wrote:  That's a pretty interesting find. I'll have to put these on my Pi1541 sometime.

I'm loading them from a Pi1541 too!

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01-03-2020, 03:53 PM
Post: #6
RE: HP Calculator Emulators for the Commodore 64 and ATARI 800XL
Brilliant -- the HP 35 emulator even has the e^(ln(2.02))=2 bug Smile

Using them with VICE: http://vice-emu.sourceforge.net/

There are only 10 types of people in this world. Those who understand binary and those who don't.
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02-16-2020, 01:48 AM
Post: #7
RE: HP Calculator Emulators for the Commodore 64 and ATARI 800XL
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. Wink 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.
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02-16-2020, 01:54 AM
Post: #8
RE: HP Calculator Emulators for the Commodore 64 and ATARI 800XL
(01-03-2020 04:37 AM)Craig Bladow Wrote:  Norbert Kehrer was interviewed recently on the FloppyDays Vintage Computing Podcast, episode 96, by Randy Kindig. Where it was mentioned he wrote a series of HP calculator emulators (35,45,55,80) for the Commodore and Atari computers! You can read about them here: http://members.aon.at/nkehrer/a800_c64_hp_emu.html

I'm very impressed with the HP-45 emulator I'm running on a real Commodore 64 at the moment.

Malwarebytes flags that site as having a trojan. Sad

Tom L
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02-16-2020, 02:05 AM
Post: #9
RE: HP Calculator Emulators for the Commodore 64 and ATARI 800XL
(02-16-2020 01:54 AM)toml_12953 Wrote:  
(01-03-2020 04:37 AM)Craig Bladow Wrote:  Norbert Kehrer was interviewed recently on the FloppyDays Vintage Computing Podcast, episode 96, by Randy Kindig. Where it was mentioned he wrote a series of HP calculator emulators (35,45,55,80) for the Commodore and Atari computers! You can read about them here: http://members.aon.at/nkehrer/a800_c64_hp_emu.html

I'm very impressed with the HP-45 emulator I'm running on a real Commodore 64 at the moment.

Malwarebytes flags that site as having a trojan. Sad

It might just be freaking out at the members.aon.at domain in general. Try it from here:

https://norbertkehrer.github.io/a800_c64_hp_emu.html
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02-16-2020, 05:34 AM (This post was last modified: 02-16-2020 05:38 AM by Craig Bladow.)
Post: #10
RE: HP Calculator Emulators for the Commodore 64 and ATARI 800XL
(02-16-2020 01:54 AM)toml_12953 Wrote:  Malwarebytes flags that site as having a trojan. Sad

Hmmm, unlikely it's a C64 virus. Smile

Google doesn't flag it, Sucuri.net gave it a passing grade. Maybe because its http and not https?

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