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- DOCUMENT:Q104771 07-DEC-1993 [W_NT]
- TITLE :MIDI Problems with ProAudio Spectrum 16
- PRODUCT :Windows NT
- PROD/VER:3.10
- OPER/SYS:WINDOWS
- KEYWORDS:
-
- -----------------------------------------------------------------------
- The information in this article applies to:
-
- - Microsoft Windows NT operating system version 3.1
- - Microsoft Windows NT Advanced Server version 3.1
- -----------------------------------------------------------------------
-
- SYMPTOMS
- ========
-
- After you load the ProAudio Spectrum 16 driver and restart Windows NT,
- you may receive a Service Control Manager error message referring you
- to the Event Viewer. The Event Viewer message states that a MIDI
- driver is not installed or configured correctly or "Can't find OPL
- Synthesizer." This error message does not necessarily prevent you from
- playing .WAV files.
-
- CAUSE
- =====
-
- In order to play MIDI files with the ProAudio Spectrum 16 card, you
- must have the Media Vision OPL3 FM Synthesizer Driver loaded. The OPL3
- FM Synthesizer Driver should load automatically when the Pro Audio
- Spectrum 16 driver is loaded, although in some cases, the OPL3 FM
- Synthesizer Driver is not loaded successfully.
-
- RESOLUTION
- ==========
-
- Following are possible work arounds:
-
- 1. Verify that MVI OPL3 is the current selection in MIDI Mapper.
-
- 2. Verify that MIDI Synthesizer is not loaded in Control Panel, Drivers.
-
- 3. Remove the Pro Audio Spectrum 16 driver, then reinstall the driver.
-
- 4. Add the FMClockOverride setting to the Windows NT Registry. Media
- Vision has confirmed incompatibilities between unspecified motherboard
- chip sets and the chip sets on the Pro Audio Spectrum 16 card.
- Differences in oscillator speed, which is responsible for FM
- synthesis, can cause inconsistencies in sound quality. Adding the
- FMClockOverride parameter may solve this problem.
-
- WARNING: Using Registry Editor incorrectly can cause serious, system-
- wide problems that may require you to reinstall Windows NT to correct
- them. Microsoft cannot guarantee that any problems resulting from the
- use of Registry Editor can be solved. Use this tool at your own risk.
-
- 1. Run REGEDT32.EXE.
-
- 2. Select the following subkey:
-
- HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
- \MVAudio\Parameters
-
- 3. From the Edit menu, choose Add Value.
-
- 4. The parameters for the new value should be the following:
-
- Value Name: FMClockOverride (case sensitive)
- Data Type: REG_DWORD
- Data: 1
- Radix: Hex
-
- NOTE: Media Vision only supports the Pro Audio Spectrum 16 adapter in
- computers with bus speed set to 8 megahertz. Bus speed is not the same
- as CPU speed.
-
- The Pro Audio Spectrum 16 is manufactured by Media Vision, a vendor
- independent of Microsoft; we make no warranty, implied or otherwise,
- regarding these products' performance or reliability.
-
- To contact Media Vision Technical Support, please call (800) 638-2807.
-
- Additional reference words: 3.10 sound midi
- KBCategory:
- KBSubCategory: hrdwr
-
- =============================================================================
-
- THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
- PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS
- ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
- OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO
- EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
- ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
- CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
- MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
- POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION
- OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
- SO THE FOREGOING LIMITATION MAY NOT APPLY.
-
- Copyright Microsoft Corporation 1993.