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Multiplexer Driver Developer’s Guide
4.2 Settings Stored in the Windows Registry
The following Registry values in the path
s
HKLM \System\CurrentControlSet\Services\winmux2k\Parameters are used to configure the TRACE out- puts. These values are only valid for the debug version of the device driver.
Table 7: Registry values for trace outputs
Values | Data (Example) | Properties |
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DebugBaud | 57600 | Baud rate: used if DebugPort is different from 0. | |
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DebugMask | 0x0000003 | DebugMask determine, which reports from the device driver | |
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| are printed to the DebugPort. | |
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| Masks: |
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| 0x0000001 | Errors |
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| 0x0000002 | Warnings |
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| 0x0000004 | Information’s |
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| 0x0000008 PnP | |
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| 0x0000010 Power management | |
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| 0x0000020 | Data control commands |
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| 0x0000040 | Open/Close/Cleanup |
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| 0x0000080 | Dispatch Device Control |
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| 0x0000100 | Dispatch Read/Write |
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| 0x0000200 | Submit control requests |
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| 0x0004000 framed data read/write | |
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| 0x0008000 frequently traces submit/wrsupport | |
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| The mask 0x7 means, that all three traces are on. | |
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| The next masks are only for driver checks and represent | |
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| internal variables and states of the serial Multiplexer Device | |
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| driver. |
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| 0x0001 0000 Frame information, send and receive | |
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| 0x0002 0000 Frame information, HDLC | |
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| 0x0004 0000 Status information from virtual channels | |
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| 0x0008 0000 Status information from Multiplexer control | |
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| channel |
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| 0x0010 0000 Output Names from WinMux2k functions | |
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| 0x1000 0000 traces how and because a Request completed | |
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| 0x2000 0000 traces V.24 signals and change of these sig- | |
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| nals |
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| 0x4000 0000 traces, in which state is the parser for scanning | |
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| the +++ sequence | |
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| 0x8000 0000 traces states for scanning a Frame | |
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DebugPort | 0x0 | 0 Output from the driver is redirected to the kernel debugger. | |
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| (default value) | |
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| 1...4: Output is redirected to a COM port | |
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Mux_Drv_DevGuide_v07 | Page 24 of 36 | |
Confidential / Released |
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