DOS ain't dead

modern timers in DOS (32bit) (Developers)

posted by LowLevel, 06.05.2022, 08:08

Hi bretjohn,

fist of all I have to say I´m not an OS developer ,.. I´m coding just for fun and I want to expand my knowledge,...

> You'll need to explain what you mean by "modern timer", and a little more
> detail in exactly what you mean by "timer". If you're wanting the computer
> to generate an interrupt at some specific frequency, there are ways to do
> it that don't involve ACPI. Keep in mind that the frequency of interrupts
> on a PC is not precise since they involve a mixture of hardware and
> software.

I´m thinking of a lapic timer or perhaps the hpet, and yes I would like to generate interrupts at a specific frequency. I fully understand that on a PC the timer interrupts are not that precise than on other "platforms".

> If you're just wanting to "monitor" the frequency and don't require
> hardware notifications (interrupts) at each tick of the clock, that can use
> a different approach.

You are thinking of the time stamp counter or ?

Thank for very much for your explainations and inputs!

cheers LowLevel

Complete thread:

• modern timers in DOS (32bit) - LowLevel, 05.05.2022, 11:11 (Developers)
  • modern timers in DOS (32bit) - bretjohn, 05.05.2022, 19:05
    • modern timers in DOS (32bit) - mceric, 05.05.2022, 20:53
      • modern timers in DOS (32bit) - Japheth, 06.05.2022, 08:06
        • modern timers in DOS (32bit) - LowLevel, 06.05.2022, 08:37
      • modern timers in DOS (32bit) - LowLevel, 06.05.2022, 08:29
      • modern timers in DOS (32bit) - RayeR, 18.05.2022, 22:40
    • modern timers in DOS (32bit) - LowLevel, 06.05.2022, 08:08
      • modern timers in DOS (32bit) - bretjohn, 06.05.2022, 20:01
        • modern timers in DOS (32bit) - tkchia, 08.05.2022, 17:57
  • modern timers in DOS (32bit) - Laaca, 05.05.2022, 20:56
    • modern timers in DOS (32bit) - LowLevel, 06.05.2022, 08:30