Hi Robert, Alex and ZB,
> Extracted from `it214v5.zip\it214v5\DRIVERS.TXT': > 01. PC Speaker > 02. DAC on LPT ... So like any good old MOD player software, Impulse Tracker can output mono music using the PC speaker using pulse width modulation and a timer interrupt. Many desktop PC still have PC speaker support. In a laptop, you might have a piezo beeper connected there, so music quality would be worse, but there would be at least some sound to test :-) Regarding hardware after ISA, some PCI soundcards and mainboard sound chipsets support simple cases of Sound Blaster 1, 2, Pro or 16, in particular if you get a lucky mix of IRQ and DMA use or non-use. Similar for some ESS cards. > 06. Sound Blaster 1.0 > 07. Sound Blaster 2.0 > 08. Sound Blaster Pro > 09. Sound Blaster 16 > 10. Sound Blaster AWE 32 > 14. ESS 1868 AudioDrive > 15. ESS 1688 AudioDrive However, it is rather interesting that the source code is available: You could even take some code from a modern DOS media player to add AC97 or HDA support to impulse tracker. Experts only, of course! Another expert option is the VSB virtual sound blaster which uses protected mode to simulate a Sound Blaster, I believe 1.0 or Pro, with limited features. It does not work with protected mode apps and as far as I can remember, it is EMM386 incompatible, although one might in theory port it to the I/O trap API of MS EMM386 and then add that API to JEMM386 or similar. Very high tech! > http://www.dosforum.de/viewtopic.php?t=1188 Mirrored as dos-virtual-... here: https://auersoft.eu/soft/by-others/ (two ZIPs, one source and one binary) Regards, Eric _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
