Author Topic: Do interrupts lose the game with low batteries?  (Read 4468 times)

0 Members and 1 Guest are viewing this topic.

Offline DJ Omnimaga

  • Clacualters are teh gr33t
  • CoT Emeritus
  • LV15 Omnimagician (Next: --)
  • *
  • Posts: 55941
  • Rating: +3154/-232
  • CodeWalrus founder & retired Omnimaga founder
    • View Profile
    • Dream of Omnimaga Music
Do interrupts lose the game with low batteries?
« on: September 01, 2010, 08:39:45 pm »
A while ago, I think I saw something implying that interrupts run slower when your batteries are low. Is it true? Also, if it's true, is the speed difference considerable?

Offline calcdude84se

  • Needs Motivation
  • LV11 Super Veteran (Next: 3000)
  • ***********
  • Posts: 2272
  • Rating: +78/-13
  • Wondering where their free time went...
    • View Profile
Re: Do interrupts lose the game with low batteries?
« Reply #1 on: September 01, 2010, 10:52:44 pm »
Only on the 83+. For the 83+SE, 84+, and 84+SE, they are based on the crystal timers, which function correctly regardless of battery level. On all of them, though, the processor slows down somewhat IIRC.
"People think computers will keep them from making mistakes. They're wrong. With computers you make mistakes faster."
-Adam Osborne
Spoiler For "PartesOS links":
I'll put it online when it does something.

Offline DJ Omnimaga

  • Clacualters are teh gr33t
  • CoT Emeritus
  • LV15 Omnimagician (Next: --)
  • *
  • Posts: 55941
  • Rating: +3154/-232
  • CodeWalrus founder & retired Omnimaga founder
    • View Profile
    • Dream of Omnimaga Music
Re: Do interrupts lose the game with low batteries?
« Reply #2 on: September 01, 2010, 10:54:11 pm »
Ah ok, thank you very much. :)
« Last Edit: September 01, 2010, 10:54:33 pm by DJ Omnimaga »

Offline calcdude84se

  • Needs Motivation
  • LV11 Super Veteran (Next: 3000)
  • ***********
  • Posts: 2272
  • Rating: +78/-13
  • Wondering where their free time went...
    • View Profile
Re: Do interrupts lose the game with low batteries?
« Reply #3 on: September 01, 2010, 10:58:57 pm »
I don't know how much the processor slows down, though... That'd be interesting to know :)
It shouldn't be significant, though. Probably only 1 or 2 hertz off, anyway (108 times per second instead of 110)
"People think computers will keep them from making mistakes. They're wrong. With computers you make mistakes faster."
-Adam Osborne
Spoiler For "PartesOS links":
I'll put it online when it does something.

Offline Hot_Dog

  • CoT Emeritus
  • LV12 Extreme Poster (Next: 5000)
  • *
  • Posts: 3006
  • Rating: +445/-10
    • View Profile
Re: Do interrupts lose the game with low batteries?
« Reply #4 on: September 01, 2010, 11:06:21 pm »
By the way, suppose that interrupts are running at normal speed.  Is the number of interrupts per second different on an 83+ than it is on an 83+SE / 84+ running in 6Mhz mode?

Offline calcdude84se

  • Needs Motivation
  • LV11 Super Veteran (Next: 3000)
  • ***********
  • Posts: 2272
  • Rating: +78/-13
  • Wondering where their free time went...
    • View Profile
Re: Do interrupts lose the game with low batteries?
« Reply #5 on: September 01, 2010, 11:16:42 pm »
I'm not sure, actually. I know it's around 110Hz, but I dunno exactly.
"People think computers will keep them from making mistakes. They're wrong. With computers you make mistakes faster."
-Adam Osborne
Spoiler For "PartesOS links":
I'll put it online when it does something.

Offline DJ Omnimaga

  • Clacualters are teh gr33t
  • CoT Emeritus
  • LV15 Omnimagician (Next: --)
  • *
  • Posts: 55941
  • Rating: +3154/-232
  • CodeWalrus founder & retired Omnimaga founder
    • View Profile
    • Dream of Omnimaga Music
Re: Do interrupts lose the game with low batteries?
« Reply #6 on: September 02, 2010, 02:36:54 am »
Ok thanks for the info guys :)

Offline Deep Toaster

  • So much to do, so much time, so little motivation
  • Administrator
  • LV13 Extreme Addict (Next: 9001)
  • *************
  • Posts: 8217
  • Rating: +758/-15
    • View Profile
    • ClrHome
Re: Do interrupts lose the game with low batteries?
« Reply #7 on: September 02, 2010, 03:45:01 pm »
Only on the 83+. For the 83+SE, 84+, and 84+SE, they are based on the crystal timers, which function correctly regardless of battery level. On all of them, though, the processor slows down somewhat IIRC.

The 83+SE has a crystal timer too? I wonder why didn't TI add a clock to that :-\
* Deep Thought loses
« Last Edit: September 02, 2010, 03:57:38 pm by Deep Thought »




Offline DJ Omnimaga

  • Clacualters are teh gr33t
  • CoT Emeritus
  • LV15 Omnimagician (Next: --)
  • *
  • Posts: 55941
  • Rating: +3154/-232
  • CodeWalrus founder & retired Omnimaga founder
    • View Profile
    • Dream of Omnimaga Music
Re: Do interrupts lose the game with low batteries?
« Reply #8 on: September 03, 2010, 12:45:59 am »
My guess is that they thought about the clock later. The TI-83+SE came out in Jan or March 2001 while the 84+/SE came out during Summer 2004.