DOCUMENT:Q113431 07-MAY-2002 [homegame] TITLE :Lear Engine Sounds Are Choppy with SoundBlaster 16 PRODUCT :Microsoft Home Games PROD/VER:MS-DOS:5.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Flight Simulator for MS-DOS, version 5.0 ------------------------------------------------------------------------------- SUMMARY ======= The engine sounds for the Lear Jet may cut in and out when you are using SoundBlaster 16 or SoundBlaster 16 ASP sound cards. The engine sounds for the Cessna will sound correct. MORE INFORMATION ================ This problem may occur for one of the following three reasons: 1. PROBLEM: The High DMA channel for the sound card is set to a 16 bit channel. RESOLUTION: The SoundBlaster 16 and SoundBlaster 16 ASP use a High DMA channel as well as a standard DMA channel. Changing the High DMA channel to use the standard DMA channel may correct this problem, as follows: a. Open the AUTOEXEC.BAT file using a text editor such as the MS-DOS Editor utility. b. Locate the line that says: SET BLASTER= c. Change the number that appears after the H parameter so that it matches the number after the D parameter. 2. PROBLEM: There is not enough EMS memory configured. RESOLUTION: Making the following changes to the Expanded Memory Manager may correct the sound problem: a. If you are using EMM386 as your Expanded Memory Manager: i. Open the CONFIG.SYS file using a text editor such as the MS-DOS Editor utility. ii. Locate the line that says DEVICE=EMM386.EXE, where is the path to your EMM386.EXE file. iii. Modify it so that it reads as follows: DEVICE=EMM386.EXE 2048 RAM b. If you are using a third party Expanded Memory Manager, consult the manufacturer's documentation on how to configure EMS memory (2048K or more.) 3. PROBLEM: Too few EMS handles are configured, or the DMA buffer size is too small. RESOLUTION: Making the following changes to the Expanded Memory Manager may correct the sound problem. a. If you are using EMM386 as your Expanded Memory Manager: i. Open the CONFIG.SYS file using a text editor such as the MS-DOS Editor utility. ii. Add the following to the end of the EMM386.EXE line in the CONFIG.SYS file: H=255 D=64 b. If you are using a third party Expanded Memory Manager, consult the manufacturer's documentation on the following topics: - How to increase EMS file handles (to 255) - How to increase DMA buffer size (to 64) Additional query words: 5.00 flightsim fltsim dos FS5 stutters on off sb16 sbpro Pro ====================================================================== Keywords : Technology : kbGamesSearch kbFlightSimSearch kbFlightSim500DOS kbSimSearch Version : MS-DOS:5.0 Issue type : kbinfo ============================================================================= 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 2002.