April 22, 2019 posted by

However, changing the latter jumpers to line level didn’t work right; the bass response went to zero like there was a short. However, after initial success it became obvious that some of the instruments are just bad and wrong for music that was tuned for a genuine OPL3. Exiting and restarting it with no command-line switches seems to purge the problem, but it recurs. Make the following changes to the [setup 0] section of an IW. The UltraSound base port is selected by jumpers, and there is a jumper to disable the game port.

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CFG file and change the value of Dma0 or Dma1 as needed.

The waveblaster header may be in the traditional orientation parallel to the slot or sideways. Channels are not reversed for FM music from Midier or Linux aplaymidi, or for wav music from Linux aplay.

The kernel patch for spurious “sfxload: He is a lifelong computer geek and mpuu-401 everything related to computers, software, and new technology. Sound cards that use two DMAs for full-duplex operation recording and playing at the same time will usually fall back to half-duplex mode if the two DMAs are set to the same value.

Reportedlyearlier ALS non-plus cards did not have this limitation.


The MPU is as yet untested. It was a non-upgrade that screwed us up for years and from which we never completely recovered. If it’s V, V or V, then you do. Some sound cards can use the same IRQ for native mode as for Sound Blaster emulation without a conflict.

There is a configurator that works in plain DOS, but it was cleverly hidden inside of the Windows drivers package, which can’t be extracted under DOS. The only thing it does wrong is choose 8-bit DMAs by default. I haven’t yet found a SIMM for it that doesn’t cause problems.

Same with DN3D, even when the mixer rate is set to 44 kHz. It’s not the FM synthesis per se ; it’s that cmpatible high-pitched instruments are way too loud relative to the others have a listen.

Most probably this sample has a failing component.

Crystal audio chips in the series from CS through CS appear frequently as the integrated audio on motherboards, where they provide Sound Blaster Pro 2. EXE, that only runs under Windows. So unless you know how to fix that let me know! In aplaymidi, the output is sometimes similar to that from DOOM; other times it is blatantly broken and completely messed up.

In alsamixer, there is a mysterious 3-leveled control labelled Playback that seems to work like a gain multiplier making volume much louder. It is not a pretty or robust solution, as the cable just runs out the back of your case and there is nothing to stop the connector from being yanked off the sound card, but it gets the job done.


In another touch of irony, the Windows drivers didn’t even work. Settings are saved to the file ALS3. Reducing it to 22 kHz solves the problem.

Crystal PnP Audio System MPU-401 Compatible Free Driver Download

All of my Sound Blasters had the hanging note bug. An alternative is MIDIer version 2. Sysem sometimes gets into a state that garbles OPL3 music and a power cycle is needed to reset it. Cleaning those cruddy contacts didn’t help. Out of the box, all audio sources are resampled to a fixed rate and mixed in software.

Crystal PnP Audio System MPU Compatible driver Sound card software versions

The problem is that PnP compztible DMA 3, but the module thinks that the only valid choices are 0 and 1. Shuffled the jacks watch that!

Media Vision Jazz16 and Chip: Wav music sounds good. EXE with the version that was installed into C: