QNX RTOS v4 Knowledge Base
QNX RTOS v4 Knowledge Base
| Title |
Dev.par consumes all of the CPU |
| Ref. No. |
QNX.000005866 |
| Category(ies) |
Character I/O |
| Issue |
We are having a problem using Dev32.par. Usually, it operates fine, but if the printer connected to the parallel port is not powered, Dev32.par consumes virtually all of the CPU at it's priority. We expermented with the options on Dev32.par but nothing seemed to help. Do you have any suggestions?
|
| Solution |
When a character is written to the parallel port and there is no printer/device attached to it, Dev.par will continuously pole until it can send out that character. This will consume all CPU time at that priority.
There is no current fix for this problem. |
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