Re: Thunderclock Plus support in Jace: Updated

[BLuRry <brendan.robert@gmail.com>]

On Monday, December 17, 2012 10:58:45 PM UTC-6, mdj wrote:
> On Friday, 14 December 2012 02:55:52 UTC+10, BLuRry  wrote:
> 
>  
> 
> > Only thing is that I don't know of programs that actually use this, any suggestions?  I don't really have time to create a test program for this.
> 
> 
> 
> The utility disks of clock cards usually contained programs that would overlay the time/date on the screen which may have used interrupts. Appleworks may use them to do the same thing ...
> 
> 
> 
> What kind of interrupt consistency are you getting in real time ?

I base the timing off the emulator timing, which is roughly measured at the correct rate, but of course it is only adjusted every 10ms or so.  When something sets up an interrupt, I capture the requested interval and calculate how many clock ticks that should be.  Then the card just waits that many ticks before it signals an interrupt.  This saves me from having to run a separate timer.  As for the Thunderclock applications, it should be pretty comparable since the thunderclock didn't offer precise millisecond accuracy anyway.

-B