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Re: DC-37 Connector

Posted on 2024-01-20, 03:26

These posts suggest that it uses a proprietary Hitachi interface: http://www.linuxmisc.com/5-linux-hardware/284f7e379ccdbd6a.htm https://wiki.preterhuman.net/Hitachi_CDR-1700S as does a recent listing (sold just over 2 days ago) on a certain popular auction site. It's DSub 37 (not DC-37) .... …

Re: so I had the urge to get out an old Linux computer

Posted on 2024-01-13, 20:32

in Milliways
You could try a modern Linux distribution, Debian still supports i686 though I did have trouble booting Debian 12 over PXE with nfsroot on a Celeron "Coppermine", it didn't present a login prompt at the end of the kernel and systemd boot, but it worked fine on a VIA C7-D. Debian 11 works fine under …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-11-22, 00:20

Then I came across this: https://github.com/Baron-von-Riedesel/VSBHDA and tried it. This does not crash on boot but I get no sound at all. Is this the corresponding issue raised on the VSBHDA GitHub? Looks a number of tools were already tried and it appears to be related to the HDA routing. …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-09-15, 21:42

Can confirm sound working out of the box with linux games-knoppix 4.02 live-dvd. What was the setting of the "Line HP Swap Switch" in the mixer? Try toggling it with sound playing and check if the position needs to be different from the other systems in order to get sound. For DOSSOUND see: It's …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-09-13, 00:52

Maybe you could use http://www.georgpotthast.de/dossound/ and its internal API to read out volume mixer? 'AH=30h - Read Codec Register Value' http://www.georgpotthast.de/dossound/dossound.htm http://www.georgpotthast.de/dossound/ Samples directory has some basic and nasm assembler examples, but …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-09-10, 00:11

The muting or routing is controlled via software, or in the rom/firmware of the AC97 chip? So is there a steady solution (fixing the firmware?), or has a patched driver be loaded every time to generally fix that? AIUI, the FreeBSD patch enables the surround/headphone output as an extra mixer output …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-09-09, 00:43

You mean messuring on these Pins with propriet tools (which I don't have) Either check for continuity (with a multimeter) between the output sockets (line-out or headphone) and the pins on the chip, or you can follow the traces from the chip on the PCB to see where they lead to. I tested my other …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-09-07, 21:41

I think I still need more advice on how to check and fix that issue. Thx! AIUI the patch value 0x0400 turns the surround/headphone output into an amplified mixer output. The existing line-out is still left as the mixer output, just at line-level. You can try tracing how your systems are routed, …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-09-06, 23:43

I'm guessing that diff is from FreeBSD? (it would be clearer if it were surrounded by [code][/code] ) The comment is a little confusing, suggesting that 0x400 is better for all instances but only applies it to the Fujitsu C610. Anyway, I think this is the SBEMU equivalent (not even compile-tested, I …

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