Cool. That daughter board is a neat item.

What does this daughter board do?

bristlehog wrote:

What does this daughter board do?

It's a 16-bit Crystal codec for the GUS, it gives the ability of 16-bit recording and also 16-bit DMA playback, apparently at the right address(es) to be WSS compatible. So it may be a better option than a GUS Max or PnP which contain the codec but at a "wrong" address.
It should be supported by WSS compatible games (like Turrican II or Tomb Raider or Quake - but Quake knows the Max and the PnP too) and music software (like Impulse Tracker or Cubic Player 2.6), and hopefully some late demos with the Midas library.

If the program uses software playback (DMA streaming) it's often MUCH less taxing on the hardware. On many chipsets you lose like 30% of the frame rate with plain GUS during DMA streaming (=all along the game) but a codec like this brings it down to normal SB level. There are a few chipsets that are free of this problem, though, like the mighty BX or VIA 694T. But most (all?) Socket 7 chipsets, for example, are plagued by it.

Hmmm, I'd like to find one for one of my Classics.

After hearing about the daughterboard when I read my first Ultrasound review in 1993/4, I have never seen one until now. I was beginning to think they might have been vapourware!

Hi guys,
is anybody there who has the original installation diskettes for the GUS daughter board? An original installation program v4.11 for GUS/GUS MAX does not recognize this daughter board.
I only found this manual (also in PDF )and tried a guy from that place but got an negative answer.
https://llg.cubic.org/docs/

thanks.

Unfortunately I no longer have the original installation disks. However, in an old CONFIG.SYS and AUTOEXEC.BAT I found the following lines:

1DEVICEHIGH=C:\ULTRA16\ULTRINIT.SYS ULTRASND=220,1,1,11,7,530,3,5,0,0

1SET ULTRASND=220,1,1,11,7
2SET ULTRA16=530,3,5,0,0
3SET ULTRADIR=C:\ULTRA16
4SET GUSMOD=C:\ULTRA16\MOD
5PATH=C:\ULTRASND;C:\DOS;C:\ULTRA16
6LH C:\ULTRA16\ULTRINIT.EXE -ej

I'm unsure what version of ULTRINIT.SYS accepts the 16 bit daughter board settings, I believe v4.11 are the latest, correct? Maybe an older version would accept these parameters? Not sure...

http://www.gravisultrasound.com/utilities.htm

And do you have the preinstalled ULTRA16 directory?

Rabanik wrote on 2021-02-25, 15:43:

And do you have the preinstalled ULTRA16 directory?

Unfortunately, I don't. 😢

These daughterboards are really rare. Kudos to you for keeping yours!