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Problems with SB Pro 1.0 CT1330A

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First post, by Physikant

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Hey guys,

I recently bought a Sound Blaster Pro 1.0. I Installed it in my DOS 6.22 PC and tried it. I get the basic Adlib sound from games, but there is no digital playback and most games don't recognize a Sound Blaster at all, only an Adlib.
There is no conflict with IO adresses, Interrupts or DMA channels, I am sure.
Does the CT1330 need a special driver to support digital playback in games? On the creative page, they talk about a device driver but the link is broken. I can not find it anywhere else on the net.

Any help here please?

Niko

Reply 1 of 8, by weedeewee

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do you have the BLASTER environment variable set ?

similar to
set BLASTER=A220 I7 D1 T6 P330 H5

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Reply 2 of 8, by Gmlb256

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Like the above post, do you have the BLASTER environment variable set in AUTOEXEC.BAT? Should be like this for the original SBPro:

SET BLASTER=A220 I7 D1 T2

Overall, no DOS driver is required but is recommended for the mixer software, SBFMDRV and CT-VOICE.DRV. The latter two files are required for certain DOS games.

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Reply 3 of 8, by Physikant

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So i stripped my config.sys and my autoexec.bat to the bare minimum.
I added the SET BLASTER=A220 I5 D1 T2 line as suggested.
My SBPRO 1.0 is jumpered IO_SEL 22X, INT SELECTION IRQ5, DMA SELECTION DRQ1 DACK1, JYEN NC, PC SPK NC, RSPK EN jumpered, and AUDIO PWD is jumpered second and third from the bottom.
Again: all games with auto detection (like Wolf3D) detect an Adlib and play music and "music sound effects", but no digital audio. If I configure doom correctly, the music is present but no sound effects.

I tried the same with my SBPRO 2.0 CT1600, and there everything works flawlessly.

Is it just broken? 🙁

Reply 5 of 8, by Jo22

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+1

I'd also run the diagnose program on the diskettes.
It should be able to determine DSP version, at least.
That way, we can be sure the DSP (microcontroller) is still working.

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Reply 8 of 8, by pc-sound-legacy

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What are your system specs? If it is a fast system you can try if setmul or disabling cpu cache will help. Maybe someone know if -5V is needed for the digital playback part of this card, and if so, do your PSU supply it?

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