Curious Speed + Time change on HP50G with Emu48 on Samsung - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html) +--- Forum: General Forum (/forum-4.html) +--- Thread: Curious Speed + Time change on HP50G with Emu48 on Samsung (/thread-14172.html)

Curious Speed + Time change on HP50G with Emu48 on Samsung - Gil - 12-14-2019 08:11 PM Try this small program on HP50G with EMU48 on your phone : « TIME 1. 100000. START NEXT TIME SWAP HMS- HMS-> 3600 * "Time in s" ->TAG » Execution's time for these START/loops : about 32 s with my Samsung Galaxy S6. Now, I change the loop upper limit from 100 000 to 1 million (10 times more START/loops). The execution's time jumps now to 1750 seconds instead of the expected 320 seconds. Why? More curious. Time shown on the calculator, after the 1 million START/loops, is equal to effective time + 89 minutes : the calculator shows a time about 1 hour 19 minutes ahead of effective time. And even more unexpected: After a while (of idleness) ,the calculator returns by itself to the correct time. Any explanation and way to correct these strange behaviours? Gil Campart RE: Curious Speed + Time change on HP50G with Emu48 on Samsung - Hlib - 12-14-2019 10:42 PM Tested on go49gp emulator which works identical to real HP-50G with speed setting ×4 to make closer to your 32 s. It`s alright. I`m wondering: is this a problem in the EMU48 or in the Samsung Galaxy S6? http://images.vfl.ru/ii/1576362127/f125888a/28912232.png RE: Curious Speed + Time change on HP50G with Emu48 on Samsung - Gil - 12-14-2019 10:56 PM I'll test tomorrow evening with EMU48 on my son's Samsung Galaxy S10. Very strange that the clock belonging to HP50G-EMU48 was temporarily changed (but of course not the clock of the phone itself), giving a calculation time of more than 6000 seconds, when the real time needed for those empty loops was about 9 minutes if I remember correctly (sure : more than 5 minutes, vs the 30-35 seconds expected). I mentioned the "case" to Regis Cosnier and wait for his feedback. Regards, Gil RE: Curious Speed + Time change on HP50G with Emu48 on Samsung - Gil - 12-14-2019 11:34 PM Precision or correction : a) f(100 000 loops ) = 3.4 s; b) f(1000 000 loops ) = 33 s; c) f(10 000 000 loops) = 480 s (expected about 330 s). For c), the clock of HP50G with EMU48 on my Samsung Galaxy is systematically set ahead : last "run", about 1 h 38 m. But as mentioned, the HP50G clock turns back by itself to the correct time of the phone. Regards. Gil