Very nice work - will have to build one when its complete 😀

Hey, I would be interested too.

CD40105 variant added, component placement map added, custom Eagle library added & documentation updated.

Just as a small finisher, a video showing the DSS emulator in action (sound recorded via line in on my main PC):
https://www.youtube.com/watch?v=EoGCf69QLJc&feature=youtu.be

Nice 😀 I hear sounds!

I thought i remembered the guards screaming in Wolf 3D with my original DSS. I might be wrong though. Any kind of limitation with this design?

carlostex wrote:

I thought i remembered the guards screaming in Wolf 3D with my original DSS. I might be wrong though. Any kind of limitation with this design?

No, Wolf3D's sound engine is crap ... it's limited to outputing 1 sound with no software mixing ... so if a sound is playing already the new one is skipped.
That's why I waited before opening the door to Hans Grosse and closing the door before the "end sequence".

Actually ... seems like the truth is somewhere in between:
https://www.youtube.com/watch?v=kN30QELXiZw

Alone in the dark confirmed as working (it's "broken" in DOSBox [or rather not fixed since AITD's detection routine is stupid]), while Dungeon Master does NOT work.

EDIT: DM works with the -sd2 parameter

Dungeon Master detection routine confirmed working with the 74ALS232 variant (it's extremely picky about the timing, so one might have to re-adjust the variable resistor a few times)
http://i.imgur.com/bllkrgw.jpg

EDIT: Also works with the CD40105 variant ... or a mix between both ICs (as long as you keep the different signal levels for OE and RESET between both chips in mind). I guess this project can be considered a full success 😀

Thanks spend a bit of time to make one:

http://www.dosforum.de/viewtopic.php?f=29&t=10210

Time to Test it 😀

https://www.youtube.com/watch?v=pnncFNkkI6s&f … player_embedded
https://www.youtube.com/watch?feature=player_ … d&v=LUCiWou-xcs

Looks cool as heck.

Regarding the Covox/DSS, I see mentions of "mono", "stereo-on-1" and "stereo-on-2". Mono is obvious, and I think I figured what the "stereo-on-1" means. But I can't figure out what "stereo-on-2" is.

stamasd wrote:

Regarding the Covox/DSS, I see mentions of "mono", "stereo-on-1" and "stereo-on-2". Mono is obvious, and I think I figured what the "stereo-on-1" means. But I can't figure out what "stereo-on-2" is.

Two mono covoxes on two LPT ports.

But I have to add that while Covox and DSS are both LPT port DACs, they are completely different and not compatible. Samples need to be written to DSS with a load strobe and they go into 16 sample FIFO that can signal when it's full and samples are played back at fixed 7kHz rate, while Covox is just a DAC that will output whatever is on LPT data pins at any time.

Jepael wrote:

stamasd wrote:

Regarding the Covox/DSS, I see mentions of "mono", "stereo-on-1" and "stereo-on-2". Mono is obvious, and I think I figured what the "stereo-on-1" means. But I can't figure out what "stereo-on-2" is.

Two mono covoxes on two LPT ports.

Yeah that makes more sense. Prone to desynchronization probably.

But I have to add that while Covox and DSS are both LPT port DACs, they are completely different and not compatible. Samples need to be written to DSS with a load strobe and they go into 16 sample FIFO that can signal when it's full and samples are played back at fixed 7kHz rate, while Covox is just a DAC that will output whatever is on LPT data pins at any time.

Yes, that part was clear.

Can someone give us a status update of the dss/covox project ?

thx
doc

Very interested as well!

Also quite interested.

Think we can convince Dreamblaster to make a CVX4 + DSS Dongle pack?

Seems like it would be an even better seller than the CVX4 by itself because it would vastly increase the number of titles that could be used with it.

I ordered a patch of pcbs with shockwav3's design.
so in a couple of days/weeks i will have a version on pcb 😀

also made a covox with dac ic.. but still only schematic and brd on my desk.
had no time to make a pcb for now.

But i will do in the next months.
Its full chip dac but only mono, with lpt passtrough.
So i don't have to unplug printer/etc..

Im also intressted! 😀