Re: The Soundblaster DSP project

Posted on 2024-04-02, 15:52

by

by S95Sedan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Heres a somewhat more recent file if anyone is interested, based on 4.16, while keeping the Initialization (CSP) for AWE32 cards from 4.13 intact. So my results using a CT2230 testing both the patched 4.13 and now this patched 4.16 (unofficial 4.17) found on this post: ***Hanging note bug is …

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Re: DOS games with native DB50XG/SW60XG support

Posted on 2024-03-30, 16:54

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by S95Sedan

in Marvin \ Sound

in Marvin \ Sound

Nice topic, wanted to ask the same thing. I'm not musically inclined, so does General MIDI and XG sound exactly the same? In DOS? Is there a difference in the sound when running from Windows? I only have Settlers II to test at the moment. Youll hear it, generally GM sounds more flat where as XG has …

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Re: The Soundblaster DSP project

Posted on 2024-03-09, 10:00

by

by S95Sedan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Heres a somewhat more recent file if anyone is interested, based on 4.16, while keeping the Initialization (CSP) for AWE32 cards from 4.13 intact. ; 1. PSW fix (location: vector_dma_dac_adpcm, dac_silence) ; 2. ljmp X006e (location: vector_dma_dac_adpcm, dac_silence, vector_op5) ; 3. setb it1 ( …

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Re: The Soundblaster DSP project

Posted on 2024-02-02, 11:52

by

by S95Sedan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I also missed the topic... And it is a really interesting one! That is wonderful to have a dump of all 4.xx firmware, to have an ASM commented source of v4.13 and jewel in the crown, to have the most annoying bugs corrected with optimizations in bonus, all of that in a very short period of time. …

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Re: What soundcard(s) should I get for this specific purpose?

Posted on 2024-01-02, 14:52

by

by S95Sedan

in Marvin \ Sound

in Marvin \ Sound

The hanging not bug isnt an issue anymore. All creative cards with a seperate dsp chip (ct1741) can be fixed to not have it. All you need is a socketed dsp and a replacement plcc44 eeprom. Do you have a link as to how this can be done? Topic: https://www.vogons.org/viewtopic.php?f=46&t=48732 This …

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Re: What soundcard(s) should I get for this specific purpose?

Posted on 2023-12-28, 17:57

by

by S95Sedan

in Marvin \ Sound

in Marvin \ Sound

Most AWE32 have the "hanging note bug(s)", and the ones that does not have the bugs, usually doesn't have authentic OPL. To summarize: There are no perfect Sound Blaster-cards for this purpose, unless you're willing to let the OPL go. In my Pentium 3, which is mainly for use with Windows games, I …

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Re: SC8850 one easy mod, bring back the magic of sound

Posted on 2023-11-20, 11:28

by

by S95Sedan

in Marvin \ Sound

in Marvin \ Sound

Making topics with snakeoil is one thing, but this is outright dangerous, anyone reading this dont ever remove fuses and do this to your devices. Fuses are there for a reason, they are designed to fail at a certain point and to protect you from your house burning down. https://www.youtube.com/watch …

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Re: MDR-401 cards - are they really existed or are they an elaborate hoax?

Posted on 2023-10-26, 20:16

by

by S95Sedan

in Marvin \ Sound

in Marvin \ Sound

Heres the dump. Chip its on is a National Semiconductors Corporation, NMC27C64Q. Edit: Music quest rom does nothing, debug returns all FF.

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Re: MDR-401 cards - are they really existed or are they an elaborate hoax?

Posted on 2023-10-23, 21:01

by

by S95Sedan

in Marvin \ Sound

in Marvin \ Sound

great, you can prepare it, i.e. flash it with the "IH9MQ9_firmware_v010.bin" from the ZIP archive I mentioned. In fact if the board is compatible with the MusicQuest ROM it will be probably huge upgrade to the work of that card and instead running something we don't know what it is - get yourself …

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Re: MDR-401 cards - are they really existed or are they an elaborate hoax?

Posted on 2023-10-23, 20:32

by

by S95Sedan

in Marvin \ Sound

in Marvin \ Sound

I own the same card aswell Hey, I know you from the SB DSP thread and I know that you can solder and have a programmer. So, please, let take the investigation to a next level: test 1) de-solder the ROM and dump it, i.e. we check if it's Music Quest ROM or not test 2) if it turns out not to be Music …

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Re: MDR-401 cards - are they really existed or are they an elaborate hoax?

Posted on 2023-10-23, 20:07

by

by S95Sedan

in Marvin \ Sound

in Marvin \ Sound

Mattw pointed me to here, interesting thread. Yes, I have two of those cards and I posted about them earlier in the bought this hardware -thread. And yes, 3d printed brackets were there and it was evident from the photos seller had. I didn't think that much about it, because initially I thought …

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Re: GPU Fan connector?

Posted on 2023-10-20, 11:40

by

by S95Sedan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

JST XH or ZH are probably the ones you want by the looks of it. But i'd measure and look up the datasheet to be sure.

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Re: The Soundblaster DSP project

Posted on 2023-10-16, 15:51

by

by S95Sedan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Maelgrum wrote on 2023-10-16, 02:48: Is here any difference in clicking with this ? delay lowered from 100 to 10 Sounds the same as version 5.

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Re: The Soundblaster DSP project

Posted on 2023-10-15, 17:53

by

by S95Sedan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Still waiting for last 2 tests to be checked))) Been a little bit busy but this is for both thests on my card. There seems to be very little difference between them aswell. (If you need any specific tests let me know) Test 1: (CT3900 AWE32) - Card is detected and boots normally. - Tested audio in …

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Re: The Soundblaster DSP project

Posted on 2023-10-12, 16:18

by

by S95Sedan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

But it can be not locked)) S95Sedan dumped 4.04, Malice dumped 3.02 and 4.05. So it is possible, but requires some luck. And 2.02 (?) dump by Eric (@TubeTimeUS). Decapping chip, direct probing of chip signals, reading bit by bit from sense amplifier. This is astonishing, hats off. PS. With all my …

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Re: The Soundblaster DSP project

Posted on 2023-10-10, 16:50

by

by S95Sedan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If you want i have a ct1600 i can take the dsp off and try to read it. (Intel chip, v302, which should be readable) Maybe its usable in some way for that, as i believe thats one of the last versions which is still unaffected right?

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Re: The Soundblaster DSP project

Posted on 2023-10-10, 16:27

by

by S95Sedan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yeah i think i have them all from what i can see summarized. But its good to have it all documentated incase people need it. See the attached files which include python scripts to patch them, input (stock 4.13) and output files (5 has all the fixes combined)

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Re: The Soundblaster DSP project

Posted on 2023-10-09, 18:17

by

by S95Sedan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, it is it. This should be all of them if if im correct? patch 3 - which moves int0_handler + int1_handler: push acc push dpl push dph push rb0r0 patch 4 - ExtInt0/ExtInt1 (adpcm2 + adpcm4 + adpcm2_6 + dac_silence) pop rb0r0 pop dph pop dpl pop acc reti to ljmp X008c And patch 5 offcourse: mov …

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Re: The Soundblaster DSP project

Posted on 2023-10-09, 17:56

by

by S95Sedan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Does the third "4.13 maelgrum" release fix all known bugs so far in 4.13? I'm gonna burn it to all my cards and call it done if yes. I've given up on seeing single cycle DMA get fixed in firmware, don't think it's possible These are the fixes that are out there? v413-8k_4ca3dca8_patch3 - Fixed …

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Re: The Soundblaster DSP project

Posted on 2023-10-09, 17:21

by

by S95Sedan

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Does the third "4.13 maelgrum" release fix all known bugs so far in 4.13? I'm gonna burn it to all my cards and call it done if yes. I've given up on seeing single cycle DMA get fixed in firmware, don't think it's possible These are the fixes that are out there? v413-8k_4ca3dca8_patch3 - Fixed …

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