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AWE32 with 28MB of RAM

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First post, by retro games 100

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I am testing an AWE32, with two 16MB 30-pin SIMMs. I've loaded in the 28MB Chorium sound font in to the SIMMs within Windows 98, and it makes Doom sound quite good. I recorded a minute of it, here. The AWE32 control panel was set to Hall 1, Chorus 1, and the treble was on the "+2 notch".

The recording was set up so the music would sound OK, but not the sound effects. This is because of recording clipping in Audacity, as the effects volume was too loud. Otherwise, the effects themselves sound good on this CT3990 model - perhaps the most impressive out of all of the SB variants I have tested, including SB16, AWE32, and AWE64.

The CT3990 is disliked by some because it does not have a real OPL3 chip. IMHO however, the slightly clearer output makes up for this deficiency, and if you've got another SB variant such as a SB16 CT2800 for instance, then you could use that on an older rig, for older games that need to sound good with an OPL3 chip.

I found the SIMMs very difficult to install. The reason is because the SIMMs are fractionally too wide for the SIMM holders on the AWE32. I spent about 10 minutes trying to force them into the sockets! I tried various other smaller capacity SIMMs, such as 1MB, and they were easy to insert.

awe32.JPG

Reply 1 of 65, by swaaye

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Hey I have a CT3990 too. 😉 I've only got 8MB installed though. Soundfonts make it sound so good that it almost makes up for all the other annoyances.

I just wish the DB header worked properly. The usual SB16/AWE problem.

Reply 2 of 65, by retro games 100

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swaaye wrote:

I just wish the DB header worked properly. The usual SB16/AWE problem.

Ah! You just jogged my memory of what I need to test next! 😁 So, I guess it's bugged then! 🤣

Edit: Confirmed - no surprise.

Last edited by retro games 100 on 2011-02-22, 22:49. Edited 1 time in total.

Reply 3 of 65, by swaaye

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I haven't found any Creative cards that don't have some sort of problem with that DB header and my Roland SCD-15. They vary. I have an original release SB16 (Ct17x0) that mostly works, but it still has occasional problems.

Reply 4 of 65, by TheMAN

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I have a CT3900 with 8MB RAM... you just made me jealous! even today 16MB SIMMs are expensive!!!
did you use the S/PDIF output to record those sounds?

my CT3900 has the newer CT1745A-S mixer chip... the CT1745A-TBP you have was actually put on the cheaper AWE64s, whereas the former was put in the original AWE64 Gold... but both the outputs are much cleaner than the older mixer chips and it's pretty close to the AWE64

Reply 5 of 65, by retro games 100

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I didn't use the S/PDIF output! I really want to try this. I had a look at the card, and I have located the SPDIF "jumper/pins thing". Please can you tell me what kind of audio cable I need, in order to send the output from this 2 pins header thing, to my X-Fi recording machine - which uses a very typical "walkman style" 3.5mm headphone jack plug, for its input. Thanks a lot.

The info about the mixer chips is very interesting. I guess that makes your CT3900 a kind of "flag ship" AWE32 model. Is it true that the CT3900 comes in 2 flavours? One PnP, and the other non-PnP?

Reply 6 of 65, by TheMAN

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the CT3900 was non-PNP only
early CT3900 had the TBP chip like yours... the first AWE32 PnP was the CT3960... all of the PnP cards added the binaural 3D sound garbage... I'm glad I don't have it... but with driver hacks I did, I was able to get QSound working with my CT3900 and CT2230 before that... taking advantage of the ASP chip

the SPDIF port outputs 5 volts unlike true SPDIF... the pin info is also funny on the connector... pin 1 is signal, and pin 0 is ground contrary to normal convention
real SPDIF is lower voltage but I haven't heard of any one having problems with this before and it worked fine just connecting it as is.... all you need is to get a RCA connector and splice up some wires and a connector to hook up to it.... the SPDIF only outputs from the EMU8000, so no wave audio... perhaps the AWE64 Gold is different? I don't own one so I don't know... I really want to know still... anyone with one that can chime in? 😉

Reply 7 of 65, by Mau1wurf1977

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TheMAN wrote:

the SPDIF only outputs from the EMU8000, so no wave audio... perhaps the AWE64 Gold is different? I don't own one so I don't know... I really want to know still... anyone with one that can chime in? 😉

I believe there are version of the AWE32 that output FM (they have a true Yamaha OPL3 chip). But they don't output speech AFAIK. Still it's likely the best way to record / listen to FM...

AWE64 outputs FM and speech, but as well all know they don't have a true Yamaha OPL3 chip. Still it's likely the best way to record / listen to speech...

There are other cards with SPDIF. The AudioPCI and it's Creative incarnations also support it. But that card is very very quiet as it is (but doesn't work with every game unfortunately)...

There are others as well...

Regarding recording, IMO it's good to have the noise recorded / not recorded as it helps to compare cards. Things like which mixer chip sounds good in theory, but reality is different. E.g. my good old Sound Blaster Pro's 2.0 are still the quietest cards.

The SB16 VibraS (real OPL) hisses a lot more and so do the AWE64 card's.

So in reality one simply needs to go through a ton of cards to find a "good one" 🤣

Reply 8 of 65, by TheMAN

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I guess it all comes down to manufacturing quality.... like cars, you don't want to have it "built on monday" or "built on friday" 😉
my CT3900 is pretty quiet for a sound blaster.... my CT2230 was very noisy, even before I f'd up the amp (long story)
I have a CT1770 that also has the same mixer chip as my CT3900 (a rare thing)... I don't remember how it sounds because I only played with it for 10 minutes before putting it back in the box (it's brand new)... probably more noisy because of the volume control knob at the back

Reply 9 of 65, by Ace

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retro games 100 wrote:

The CT3990 is disliked by some because it does not have a real OPL3 chip.

I don't know if I'm seeing things, but take a look at this image: http://www.yjfy.com/images/oldhard/sound/ct3990_1.jpg

Look at the empty solder spots just above the ISA connector. It looks as though the CT3990 SoundBlaster AWE32 was supposed to use a Yamaha YMF289 for OPL3 instead of the CQM clone. Wonder if there would be some way of hacking in a YMF289 and disabling the CQM YMF262 clone. I did find a CT3990 AWE32 at a flea market some time ago and never picked up the card because the seller couldn't find any SIMMs to insert into the card(I need at least 4MB of RAM for soundfonts). Might order a YMF289 and corresponding DAC to try to get authentic OPL3 FM Synthesis if I do pick up the AWE32 at some point.

Reply 11 of 65, by retro games 100

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I've just remembered how to make a recording digitally, without the need to use the SPDIF. I could simply use a recording utility running on the Windows 98 machine, alongside Doom, such as Goldwave or even Audacity. Currently, I run Audacity on my main WinXP box, and connect the 2 machines using an audio cable. I'll redo the 1 minute Doom recording today...

Reply 12 of 65, by Ace

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TheMAN wrote:

well the CT3900 has an empty spot there too... and it has a real OPL chip
http://www.yjfy.com/images/oldhard/sound/ct3900.jpg

That's actually considerably different than the CT3990 AWE32. The empty solder spot does not correspond to the pin count of the YMF289. On top of that, there's no solder spot for the DAC. The CT3900 AWE32 uses an ASIC-based YMF262 integrated within the CT1747 chip, which combines the interface to the ISA slot with a real Yamaha YMF262 and the YAC512 DAC.

If you were to compare the size and pin layouts of the YMF289 and YAC516, they perfectly match the empty solder spots on the CT3990 SoundBlaster AWE32.

Reply 13 of 65, by sliderider

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My budgies like the music but not the gunfire so much. 😁

Reply 14 of 65, by retro games 100

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sliderider wrote:

My budgies like the music but not the gunfire so much. 😁

Lol! Yeah, sorry about the gunfire recording quality. 😦 I'll try and do this again when I've got some time, and I'll make sure there's no clipping problems with the digital sound effects.

Reply 15 of 65, by Ace

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Hey Retro Games, do you mind taking a close-up shot of the empty solder spots on the CT3990 AWE32? I'd like to know which form factor of the YMF289 would fit on the empty solder spot as well as which DAC can be used in conjunction with the YMF289(there's a 44-pin and 48-pin version of the YMF289, so before I go and get a CT3990 AWE32 to try to get authentic OPL2/OPL3 FM Synthesis working on it, I'd need to know what variant of the YMF289 I'd have to purchase).

Creator of The Many Sounds of:, a collection of various DOS games played using different sound cards.

Reply 16 of 65, by TheMAN

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you better make sure the traces lead back to the EMU or the mixer chip too

Reply 17 of 65, by 5u3

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On AWE/SB32 cards they saved the DAC by routing the output of the OPL through the EMU8K (and use its DAC instead).
Drawback: you lose two channels on the synth. Advantage: you can use the EMU8K chorus & reverb to fatten up FM sound. 😎

Reply 18 of 65, by Ace

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Does it work the same way with the CQM YMF262 clone as compared to a real YMF262/YMF289 or CT1747?

Creator of The Many Sounds of:, a collection of various DOS games played using different sound cards.

Reply 19 of 65, by 5u3

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Ace wrote:

Does it work the same way with the CQM YMF262 clone as compared to a real YMF262/YMF289 or CT1747?

I suppose so. With the exception of the Goldfinch cards, all AWE32/64 and SB32 are rigged up this way. Another nice feature: Because the FM sound passes through the EMU8k, it can be recorded digitally via S/P-DIF.