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Re: [rtl] Stability Problems while generating 1KHz signals
Hello List Readers,
I dug into the RTlinux code meanwhile and maybe I now understand the most
relevant parts of the code (Is there a programming sheet of the 8254/8253
available on the net somewhere and a schematics of the wiring of the counters
?).
I defined the debug code in RTlinux0.9 9F (which measures the ticks while
setting a new counter value?) and come up with the following numbers:
66 MHz pentium: new record: 02 31b
166 MHz pentium: new record: 0a 0c
66 MHz 486: new record: 13 48
So the 66 pentium is very bad - it seems to take somtimes more than a half
period of decimal 500 to set the counter 0 !
The chips on the 66 MHz pentiums motherboard are: S82433/4LX (3 chips) and
S82378ZB
So I should just give up with that motherboard - or what do you think ?
Thanks for any further ideas/suggestions/help.
Greetings
Hermann
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