Non-populated PC104 sound card PCB using the CS4237B audio chipset, as designed by rasteri. These are extra unfinished PCBs that I was shipped that I do not have the time/components left to build. PCB done by PCBWay in gloss black using immersion gold (ENIG) pads.
This PC104 board is for making a suitable audio solution for an existing piece of industrial equipment that utilizes the PC104 standard. PC104 is essentially an industrial solution that allows stacking boards atop of one another that effectively connect them all via a large ISA-based pin header.
But don't listen to me, here's rasteri explaining it during his wee86 build that utilizes this PC104 sound card: https://www.youtube.com/watch?v=ZBsv-jRiIT8
*** NOTICE: Technical construction is required to completely finish this board, as well as additional purchase of all necessary componentry, which may include lead times and possible component substitutions for out-of-stock components - prior electronics technical knowledge and soldering skills, particularly with surface mounted (SMD) components required. NOT SUITABLE FOR BEGINNERS! ***
BOM & Project page: https://circuitmaker.com/Projects/Details/rasteri/PC104-soundcard-3
weeCee DOS tools (for device initialization): https://drive.google.com/file/d/1gC8EGrY1DF6A9B9hUQTlLqELUAPtJDDv
The above weeCee DOS tools zip file contains a working CS4237B audio chip EEPROM/BIOS image (thanks to 640k!Enough - see Vogon's forum post for more info) in \TOOLS\MALIBU\EEPROM, which can be programmed onto the CS4237B using the following DOS commands (after restarting into MS-DOS mode):
```
FIXRDP
..\..\UNISOUND\UNISOUND
HOSTLOAD CS4232.BIN
FIXRDP
..\..\UNISOUND\UNISOUND
RESOURCE /r=CS4232.ASM /e
```
If the CS4237B audio chip cannot be detected by the Plug'N'Play system then you very likely do not have the CS4237B soldered in correctly - check over your connections and verify connectivity while fixing any bridges or cold solders. TOOLS\MALIBU\CWDIAG.EXE can also be used to perform a small number of audio QA related tests.