daniel sheltraw wrote:
>
> Hello realtimers
>
> Would someone please tell me where I can find something to read about
> the various timer/counters used in PCs. This will help me ask more
> intelligent questions about RT. Also does anyone have a good reference for
> background reading on the PIC/APIC and how it is managed under RTAI. Any
> additional reading suggestions would be welcome as well.
>
> Thanks everyone,
> Daniel
>
> Despite the recent RTL vs RTAI discussion on this listing I think this is a
> great forum on RT.
Many IC makers produce 8254(timer)/8259(PIC), e.g. Harris and Oki. Go to
their sites and dowonload the related data sheets.That will give all
what is needed for true UP Pcs. For the IO-APIC I downloaded the related
INTEL data sheet, while for Pentiums local APICs my reference is chapter
7 of the 3rd volume, system programming guide, of the Pentium manuals
trilogy. The one I used is filed as 24319201.pdf (from Intel site). APIC
knoweledge is, at the moment, needed only if you have MP motherbords.
With those documents at hand look at the 4 timer functions at the end of
rtai.c, if it is not enough ask specific questions again.
Ciao, Paolo.
-- [rtl] ---
To unsubscribe:
echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR
echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED]
---
For more information on Real-Time Linux see:
http://www.rtlinux.org/rtlinux/
