Message-Id: <199807032332.AAA26229@sable.ox.ac.uk> Comments: Authenticated sender is From: George Foot To: john DOT kismul AT bergen DOT mail DOT telia DOT com Date: Sat, 4 Jul 1998 00:27:12 +0000 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: Allegro question Reply-to: george DOT foot AT merton DOT oxford DOT ac DOT uk CC: djgpp AT delorie DOT com Precedence: bulk On 3 Jul 98 at 17:17, John Kismul wrote: > When using Allegro to autodetect the soundcard installed in a computer, > is it possible in some way to get the base address, IRQ and DMA channel > for the soundcard? Yes, there are a number of ways. First though I encourage you not to hardwire the parameters into your program, for obvious reasons. The basic technique is to use a config file, which will be read by Allegro at run-time. In the `[sound]' section of the config file you can specify values for `sb_port', `sb_irq' and `sb_dma', among other things. The port is given in hexadecimal; the others are in decimal. A simpler way to get this information into the config file (and one that allows dumb end-users to change the settings without editing the config file directly) is through the setup utility. It's in the `setup' directory of Allegro. You can just copy the `setup.exe' file to the same directory as your main executable(s), and run it from there. If you want to customise the setup program, have a look at the source file `setup.c', and especially at its documentation -- `setup.txt'. If these parameters aren't specified in the config file, Allegro uses a mixture between values taken from the BLASTER environment variable, detection, and guesswork. Generally if the user has a valid BLASTER variable everything should be fine though. Distributing a config file with your settings in it is probably a bad idea too, since it may stop Allegro from using more accurate information on other people's systems (such as the BLASTER variable). For more information, see: Allegro documentation (allegro/allegro.txt), chapter "Configuration" Allegro setup program documentation (allegro/setup/setup.txt) -- george DOT foot AT merton DOT oxford DOT ac DOT uk