Serial Port DSR Line Interrupt...
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I have a hardware device which rattles the DSR line to let the PC know it is there... Unfortunatly Windows 2000 seems to run an interrupt handler whenever the DSR line changes state, and when the DSR line is rattling at 10 microseconds, the PC is unable to cope with all these interrupts... Is it possible to disable the interrupt on the DSR line in windows 2000 (and XP for that matter)... (Clearing DSR in the COMM Mask makes no difference...) Thanks... Blade[DMS]
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I have a hardware device which rattles the DSR line to let the PC know it is there... Unfortunatly Windows 2000 seems to run an interrupt handler whenever the DSR line changes state, and when the DSR line is rattling at 10 microseconds, the PC is unable to cope with all these interrupts... Is it possible to disable the interrupt on the DSR line in windows 2000 (and XP for that matter)... (Clearing DSR in the COMM Mask makes no difference...) Thanks... Blade[DMS]
10 microseconds ? ~ 10^5 Hz??? That's a bit quick... i'm not suprised it causes problems. Anyway, methinks the only way you'll do this is with the DDK. Jon Signature space for rent. Apply by email to....
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10 microseconds ? ~ 10^5 Hz??? That's a bit quick... i'm not suprised it causes problems. Anyway, methinks the only way you'll do this is with the DDK. Jon Signature space for rent. Apply by email to....