Hi Steve,

On 20-Jul-03, Steve McCrystal wrote to All:

 >> >Yeah, the level is determined by the number.  Lower numbers are
 >> >given a higher priority.

 >> Sorta. IIRC, OS/2 reprograms the PICs. I'll have to look up the
 >> details, so ask me Wednesday.

 SM> You do, of course, RC.  I don't have the info handy either, but
 SM> you have it right none the less!

 SM> If you post the reprogrammed order, I *WILL* have it handy! :^)

Here you are, complete with where I found the information :-)

From the Devcon CDROM or the DDK CDROM in PDDBASE.INF (OS/2 V2.1
Physical Device Driver Reference), under Physical Parallel Port Device
Driver/subsection Parallel Port IRQ Performance:- "The Programmable
Interrupt Controller (PIC) has been rotated under OS/2 2.1, giving
IRQ3 (serial port) the highest priority in the system." So, the
priority is 3,4,5,6,7,0,1,8,9(2),10,11,12,13,14,15. Somewhere else I
seem to remember reading that if OS/2 finds the priority already
rotated by the BIOS it leaves it alone (but I can't trace a reference
for that).

Note that the file with this noted in it is dated March 1994... :-)

(Note that I'm reading this via FIDO).

George

--- Terminate 5.00/Pro