Okay, with the debug driver:
Uniaud32 version 2.02.05-SVN-DEBUG
Based on linux 5.10.5
OSS32_Initialize: Start address: ef692000
kobject: 'snd_seq' (0xef4ec3a8): kobject_add_internal: parent: '<NULL>', set: '<NULL>'
kobject: 'devices' (0xef4ec490): kobject_add_internal: parent: 'snd_seq', set: '<NULL>'
kobject: 'drivers' (0xef4ec4e4): kobject_add_internal: parent: 'snd_seq', set: '<NULL>'
bus: 'snd_seq': registered
OSS32_Initialize1: Start address: ef692000
bus: 'snd_seq': add driver opl3_seq
kobject: 'opl3_seq' (0xef4eca5c): kobject_add_internal: parent: 'drivers', set: 'drivers'
kobject: 'hdaudio' (0xef4ecdd4): kobject_add_internal: parent: '<NULL>', set: '<NULL>'
kobject: 'devices' (0xef4ecea8): kobject_add_internal: parent: 'hdaudio', set: '<NULL>'
kobject: 'drivers' (0xef4ecee8): kobject_add_internal: parent: 'hdaudio', set: '<NULL>'
bus: 'hdaudio': registered
bus: 'hdaudio': add driver hda_generic
kobject: 'hda_generic' (0xef4ecf1c): kobject_add_internal: parent: 'drivers', set: 'drivers'
bus: 'hdaudio': add driver patch_analog
kobject: 'patch_analog' (0xef4ecf90): kobject_add_internal: parent: 'drivers', set: 'drivers'
bus: 'hdaudio': add driver patch_ca0110
kobject: 'patch_ca0110' (0xef4ed008): kobject_add_internal: parent: 'drivers', set: 'drivers'
bus: 'hdaudio': add driver patch_cirrus
kobject: 'patch_cirrus' (0xef4ed080): kobject_add_internal: parent: 'drivers', set: 'drivers'
bus: 'hdaudio': add driver patch_cmedia
kobject: 'patch_cmedia' (0xef4ed0f8): kobject_add_internal: parent: 'drivers', set: 'drivers'
bus: 'hdaudio': add driver patch_conexant
kobject: 'patch_conexant' (0xef4ed170): kobject_add_internal: parent: 'drivers', set: 'drivers'
bus: 'hdaudio': add driver patch_realtek
kobject: 'patch_realtek' (0xef4ed1e8): kobject_add_internal: parent: 'drivers', set: 'drivers'
bus: 'hdaudio': add driver patch_sigmatel
kobject: 'patch_sigmatel' (0xef4ed260): kobject_add_internal: parent: 'drivers', set: 'drivers'
bus: 'hdaudio': add driver patch_via
kobject: 'patch_via' (0xef4ed2d8): kobject_add_internal: parent: 'drivers', set: 'drivers'
pci_register_driver: query_device found 9 1002:9902 class=40300 checking intel8x0
pci_register_driver: query_device found a2 1022:780d class=40300 checking intel8x0
pci_register_driver: query_device found 9 1002:9902 class=40300 checking via82xx
pci_register_driver: query_device found a2 1022:780d class=40300 checking via82xx
pci_register_driver: query_device found 9 1002:9902 class=40300 checking emu10k1
pci_register_driver: query_device found a2 1022:780d class=40300 checking emu10k1
pci_register_driver: query_device found 9 1002:9902 class=40300 checking cmipci
pci_register_driver: query_device found a2 1022:780d class=40300 checking cmipci
pci_register_driver: query_device found 9 1002:9902 class=40300 checking als4000
pci_register_driver: query_device found a2 1022:780d class=40300 checking als4000
pci_register_driver: query_device found 9 1002:9902 class=40300 checking cs4281
pci_register_driver: query_device found a2 1022:780d class=40300 checking cs4281
pci_register_driver: query_device found 9 1002:9902 class=40300 checking cs46xx
pci_register_driver: query_device found a2 1022:780d class=40300 checking cs46xx
pci_register_driver: query_device found 9 1002:9902 class=40300 checking cs5535audio
pci_register_driver: query_device found a2 1022:780d class=40300 checking cs5535audio
pci_register_driver: query_device found 9 1002:9902 class=40300 checking es1938
pci_register_driver: query_device found a2 1022:780d class=40300 checking es1938
pci_register_driver: query_device found 9 1002:9902 class=40300 checking ens137x
pci_register_driver: query_device found a2 1022:780d class=40300 checking ens137x
pci_register_driver: query_device found 9 1002:9902 class=40300 checking ymfpci
pci_register_driver: query_device found a2 1022:780d class=40300 checking ymfpci
pci_register_driver: query_device found 9 1002:9902 class=40300 checking es1968
pci_register_driver: query_device found a2 1022:780d class=40300 checking es1968
pci_register_driver: query_device found 9 1002:9902 class=40300 checking Maestro3
pci_register_driver: query_device found a2 1022:780d class=40300 checking Maestro3
pci_register_driver: query_device found 9 1002:9902 class=40300 checking ali5451
pci_register_driver: query_device found a2 1022:780d class=40300 checking ali5451
pci_register_driver: query_device found 9 1002:9902 class=40300 checking trident
pci_register_driver: query_device found a2 1022:780d class=40300 checking trident
pci_register_driver: query_device found 9 1002:9902 class=40300 checking nm256
pci_register_driver: query_device found a2 1022:780d class=40300 checking nm256
pci_register_driver: query_device found 9 1002:9902 class=40300 checking fm801
pci_register_driver: query_device found a2 1022:780d class=40300 checking fm801
pci_register_driver: query_device found 9 1002:9902 class=40300 checking atiixp
pci_register_driver: query_device found a2 1022:780d class=40300 checking atiixp
pci_register_driver: query_device found 9 1002:9902 class=40300 checking ca0106
pci_register_driver: query_device found a2 1022:780d class=40300 checking ca0106
pci_register_driver: query_device found 9 1002:9902 class=40300 checking hda_intel
pci_register_driver: matched 87 1002:9902/40300 with 1002:9902/0 0 (hda_intel)
pci_register_driver: matched 119 1002:9902/40300 with 1002:ffffffff/40300 ffffff (hda_intel)
RMCreateDriver rc=0 DriverHandle=f937c0f0
pci_enable_device ef62dba8
Using LPIB position fix
Force to snoop mode by module option
Disabling 64bit MSI
chipset global capabilities = 0x0
snd_dma_alloc_pages with size = 4096
pci_alloc_consistent 4096 mask 0
get_free_dma_pages: size=1000 adr=f879b000 (phys eb8000) total alloc size=1000
snd_dma_alloc_pages with size = 4096
pci_alloc_consistent 4096 mask 0
get_free_dma_pages: size=1000 adr=f879a000 (phys eb7000) total alloc size=2000
snd_dma_alloc_pages with size = 4096
pci_alloc_consistent 4096 mask 0
get_free_dma_pages: size=1000 adr=f8799000 (phys eb6000) total alloc size=3000
snd_dma_alloc_pages with size = 4096
pci_alloc_consistent 4096 mask 0
get_free_dma_pages: size=1000 adr=f8798000 (phys eb5000) total alloc size=4000
snd_dma_alloc_pages with size = 4096
pci_alloc_consistent 4096 mask 0
get_free_dma_pages: size=1000 adr=f8797000 (phys eb4000) total alloc size=5000
snd_dma_alloc_pages with size = 4096
pci_alloc_consistent 4096 mask 0
get_free_dma_pages: size=1000 adr=f8796000 (phys eb3000) total alloc size=6000
snd_dma_alloc_pages with size = 4096
pci_alloc_consistent 4096 mask 0
get_free_dma_pages: size=1000 adr=f8795000 (phys eb2000) total alloc size=7000
snd_dma_alloc_pages with size = 4096
pci_alloc_consistent 4096 mask 0
get_free_dma_pages: size=1000 adr=f8794000 (phys eb1000) total alloc size=8000
snd_dma_alloc_pages with size = 64
pci_alloc_consistent 4096 mask 0
get_free_dma_pages: size=1000 adr=f8782000 (phys eb0000) total alloc size=9000
snd_dma_alloc_pages with size = 4096
pci_alloc_consistent 4096 mask 0
get_free_dma_pages: size=1000 adr=f8780000 (phys eae000) total alloc size=a000
codec_mask = 0x1
request_irq: irq 18
RMAllocResource[2] IRQ=18 rc=0
codec #0 probed OK
snd_hda_codec_device_init: entry
snd_hda_codec_device_new: entry
Unable to bind the codec
kobject: 'card0' (0xef4ed684): kobject_cleanup
kobject: 'card0' (0xef4ed684): calling ktype release
kobject: 'card0': free name
RMCreateAdapter rc=0
RMCreateDevice rc=0
RMDone: DriverHandle=f937c0f0 DeviceHandle=f927c3b0
pci_register_driver: query_device found 9 1002:9902 class=40300 checking bt87x
pci_register_driver: query_device found a2 1022:780d class=40300 checking bt87x
pcm_info()
OSS32_Initialize: SUCCESS. Cards=1
Init=35/0 Between=0/0 Complete=0/0
OSS32_ATTACH
U16: Uniaud16 v1.9.7
OSS32_QueryDevCaps
Number of cards=1 dev id=0
OSS32_WaveOpen: open error: -19
OSS32_QueryDevCaps: wave open error 3
OSS32_QueryDevCaps failed
Init=35/0 Between=0/0 Complete=0/0