Mateusz Viste wrote: > Setting the BLASTER environment variable > > This section may be useful if you are having problems with sound or music in > a DOS-based Apogee game. If you're trying to run a Windows-based game, this > section does not apply to you. > > Apogee's DOS games that use Soundblasters look at the BLASTER environment > variable to figure out where to send its sound output. Check to make sure > that you have the SET BLASTER line in your AUTOEXEC.BAT file. This code is > an example and probably isn't exactly what you need to put in your system. > > Note that this BLASTER environment variable applies for many Apogee games > regardless of whether or not you have an actual Sound Blaster card or not. > These settings tell the game how your sound card is configured, regardless of > what brand it actually is. > > SET BLASTER=A220 I5 D1 T3 P330 H6 E620 > | | | | | | | | | > | | | | | | | | |_______ AWE 32 Only Parameter > | | | | | | | |__________ "High" DMA Channel > | | | | | | |_______________ MIDI Port > | | | | | |__________________ Type of Card > | | | | |_____________________ DMA Channel > | | | |________________________ Interrupt > | | |_____________________________ Port Address > | |___________________________________ Environment Variable > |________________________________________ DOS Command > > NOTE: There can be no spaces between the word BLASTER and the equal sign (=). > If you have a space in there, your system will read the parameter incorrectly, > and it will not be recognized by our games. > > (Some of these parameters (P, H, and E) are dependant on certain types of > cards. For example, the E is only needed if you have an AWE 32. The > minimum requirements are to have the A, I, D, & T parameters. The other > three may or may not be needed depending on what type of card you have. > Please read this entire section to see if you need any of them. If you > are using a clone card, or some card that's not a "true" Soundblaster, > then you will most likely only need A, I, D, and T.) > > Now, these may not (most likely not) be the same for your board, because the > Port Address, Interrupt and DMA Channel can be set by adjusting "jumpers" on > your sound board. Some newer cards have this information controlled by > software, please consult your card's manual for more information on how to set > these things. You should also check your manual if you are unclear as to how > to tell what settings your card is set at. The information *IS* important, so > it's recommended that you know precisely what the settings are. If you are > using a card that "emulates" the Soundblaster (such as the Gravis UltraSound > through software, or the PAS16), you should check your card's manual on how to > set the card for Soundblaster emulation. > > For PORT ADDRESS, it's almost always 220. That seems to be the default for > most sound cards out there, and unless you know you've switched it away from > 220, it's a safe bet it's still there. > > The INTERRUPT is something that varies from system to system. Mystic Towers > and games prior to Raptor require that your IRQ be set at 7 or less. Apogee > does not recommend using IRQ2, as it causes problems. > > The DMA CHANNEL sometimes causes problems if it isn't set to 1, which is the > usual default. If it is not set correctly, some Apogee games may lock up > when the sound is turned on. > > The TYPE OF CARD should be 1 if you have an older Soundblaster, or a Sound > Blaster emulating card. Use 3 if you have a newer plain Soundblaster. Use > 2 for an older Soundblaster Pro. Use 4 for a newer Soundblaster Pro. > > The MIDI PORT parameter will only be needed if you are using a card that has > MIDI capabilites. If so, this is where you define what MIDI port you are > using. 330 seems to be the default, so if you have a MIDI card, and you > haven't changed anything from factory defaults, this is probably where it > still > is. > > The HIGH DMA CHANNEL is something that is used primarily on Soundblaster 16 > cards. This is not the same as the standard DMA channel, this is a different > one. This is only used if you're using a 16 bit sound card capable of playing > 16 bit Soundblaster sounds. By default, this is usually 5, so unless you know > that it's something else, it's probably still 5. > > The E620 parameter is something that is needed _only_ if you have a Creative > Labs AWE 32 sound card. If you have one of these, this parameter will have > been set up properly assuming you've installed the software that came with the > card. Check your AWE 32 documentation for a more thorough explanation of what > this parameter is used for. > > Note on the Soundblaster AWE64: The AWE64 will not always correctly set up > its sound drivers for use in Windows 95 in relation to DOS games. There is > information on how to get around this in the README.TXT file that is installed > on your hard drive in the AWE64 driver directory. > > Note on Hocus Pocus: This game was made when there were only four possible > parameters for the BLASTER environment variable (A, I, D, and T). Due to the > way the game parses the variable, the game probably won't work correctly > unless the BLASTER environment variable ONLY has those four parameters and > no others. One way to work around this conveniently is to write a batch file > for the game that sets the BLASTER variable so it only contains these four > parameters, runs the game, and then restores the settings afterward. > > After you have entered the correct SET BLASTER line in your AUTOEXEC.BAT > file, make sure you save the change, delete the game's config file (????.CFG), > and reboot before you try playing the game again.
Awesome! That description is very thorough. I've also asked what the correct settings are in the Virtual PC newsgroup. -Mike ------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com _______________________________________________ Freedos-user mailing list Freedosemail@example.com https://lists.sourceforge.net/lists/listinfo/freedos-user