i have the adi 1986a working as regard to 2 ch sound, which is fine, im after trying to get mic input working if possible, under
system prefs and sound i have no input available, i have used and followed the appleAC97 method,
any ideas would be much apreciated, skype is a must to keep in contact with peeps in the uk

Regards
Dave

It may be that the system isn't using the AC97 driver but is using Azalia instead.

Open a terminal and type in kextstat to see what .kexts are being loaded.

i think you may be right, its odd that it only started after i copied the new appleac97 kext across,
hes my output from kextstat,
if htis is that case, do i just need to remove the azilia audio kext?

Index Refs Address Size Wired Name (Version) <Linked Against>
1 1 0x0 0x0 0x0 com.apple.kernel (8.9.1)
2 25 0x0 0x0 0x0 com.apple.kpi.bsd (8.9.1)
3 36 0x0 0x0 0x0 com.apple.kpi.iokit (8.9.1)
4 39 0x0 0x0 0x0 com.apple.kpi.libkern (8.9.1)
5 34 0x0 0x0 0x0 com.apple.kpi.mach (8.9.1)
6 20 0x0 0x0 0x0 com.apple.kpi.unsupported (8.9.1)
7 1 0x0 0x0 0x0 com.apple.iokit.IONVRAMFamily (8.9.1)
8 1 0x0 0x0 0x0 com.apple.driver.AppleNMI (8.9.1)
9 1 0x0 0x0 0x0 com.apple.iokit.IOSystemManagementFamily (8.9.1)
10 1 0x0 0x0 0x0 com.apple.iokit.ApplePlatformFamily (8.9.1)
11 41 0x0 0x0 0x0 com.apple.kernel.6.0 (7.9.9)
12 1 0x0 0x0 0x0 com.apple.kernel.bsd (7.9.9)
13 1 0x0 0x0 0x0 com.apple.kernel.iokit (7.9.9)
14 1 0x0 0x0 0x0 com.apple.kernel.libkern (7.9.9)
15 1 0x0 0x0 0x0 com.apple.kernel.mach (7.9.9)
16 15 0x34e45000 0x10000 0xf000 com.apple.iokit.IOPCIFamily (2.1) <11>
17 7 0x34e58000 0x4000 0x3000 com.apple.iokit.IOACPIFamily (1.2.0) <11>
18 2 0x34e93000 0x37000 0x36000 com.apple.driver.AppleACPIPlatform (1.0.3) <17 16 11>
19 0 0x34f1b000 0x5000 0x4000 com.apple.BootCache (27) <6 5 4 3 2>
20 4 0x34fcf000 0x33000 0x32000 com.apple.iokit.IOHIDFamily (1.4.10) <6 5 4 3 2>
21 0 0x3503e000 0x3000 0x2000 com.apple.driver.AppleIntelCPUPowerManagement (1.0.1) <11 6 4 3 2>
22 0 0x3509a000 0x4000 0x3000 com.apple.driver.AppleAPIC (1.1.0) <11>
23 0 0x350da000 0x3000 0x2000 com.apple.driver.AppleSMBIOS (1.0.1) <11>
25 0 0x35171000 0x5000 0x4000 com.apple.driver.AppleRTC (1.0.3) <17 5 4 3 2>
26 0 0x3ad2e000 0x4000 0x3000 com.apple.driver.AppleACPIButtons (1.0.3) <20 18 17 6 5 4 3 2>
28 0 0x3adcb000 0x3000 0x2000 com.apple.driver.AppleACPIPCI (1.0.3) <18 17 16 11>
29 8 0x3ae58000 0x16000 0x15000 com.apple.iokit.IOStorageFamily (1.5.1) <6 5 4 3 2>
32 12 0x3b0ec000 0x1a000 0x19000 com.apple.iokit.IOUSBFamily (2.6.1) <6 5 4 3>
33 0 0x3b133000 0xe000 0xd000 com.apple.driver.AppleUSBUHCI (2.6.0) <32 16 5 4 3>
34 3 0x3b1d0000 0xd000 0xc000 com.apple.iokit.IOATAFamily (1.7.1f4) <5 4 3 2>
35 0 0x3b1ea000 0x8000 0x7000 com.apple.driver.AppleIntelPIIXATA (1.14) <34 16 11>
36 5 0x3b32d000 0x32000 0x31000 com.apple.iokit.IOFireWireFamily (2.5.5) <5 4 3>
37 0 0x3b389000 0x18000 0x17000 com.apple.driver.AppleFWOHCI (2.9.0) <36 16 6 5 4 3>
39 0 0x3b5b6000 0x12000 0x11000 com.apple.driver.AppleUSBEHCI (2.6.1) <32 16 5 4 3>
40 0 0x3b676000 0x9000 0x8000 com.apple.driver.AppleUSBHub (2.6.0) <32 11>
41 5 0x3b70f000 0x16000 0x15000 com.apple.iokit.IOSCSIArchitectureModelFamily (1.5.3) <11>
42 0 0x3b746000 0x4000 0x3000 com.apple.iokit.IOATAPIProtocolTransport (1.5.0) <41 34 11>
43 0 0x3b800000 0xa000 0x9000 com.apple.iokit.IOATABlockStorage (1.4.4) <34 29 11>
44 0 0x3b8b8000 0x6000 0x5000 com.apple.iokit.SCSITaskUserClient (1.5.3) <41 29 11>
45 2 0x3b9c4000 0x8000 0x7000 com.apple.iokit.IOCDStorageFamily (1.4) <29 5 4 3>
46 1 0x3b9ee000 0x16000 0x15000 com.apple.iokit.IOSCSIBlockCommandsDevice (1.5.3) <41 29 11>
47 1 0x3ba13000 0x5000 0x4000 com.apple.iokit.IODVDStorageFamily (1.4) <45 29 5 4 3>
48 0 0x3ba37000 0x12000 0x11000 com.apple.iokit.IOSCSIMultimediaCommandsDevice (1.5.3) <47 46 45 41 29 11>
49 0 0x3baac000 0x3000 0x2000 com.apple.driver.AppleUSBComposite (2.6.1) <32 11>
50 0 0x3bb7c000 0x9000 0x8000 com.apple.iokit.IOUSBMassStorageClass (1.4.5) <41 32 29 11>
52 0 0x3bcaa000 0x2000 0x1000 com.apple.driver.AppleUSBMergeNub (2.6.0) <32 11>
53 1 0x3bd5f000 0x5000 0x4000 com.apple.iokit.IOUSBHIDDriver (2.6.0) <32 20 11>
54 0 0x43fff000 0x2000 0x1000 com.mifki.r3d3 (1.0.0d1) <6 4 3 2>
55 2 0x34d90000 0x5000 0x4000 com.apple.iokit.IOHDAudioFamily (1.0.0d1) <5 4 3 2>
56 0 0x34d95000 0x6000 0x5000 com.apple.driver.AppleAzaliaController (1.0.0d1) <55 16 5 4 3 2>
57 2 0x34dd0000 0xf000 0xe000 com.apple.iokit.IOFireWireAVC (1.9.7) <36 11>
58 3 0x34de3000 0x16000 0x15000 com.apple.iokit.IONetworkingFamily (1.5.1) <6 5 4 3 2>
59 0 0x34df9000 0x5000 0x4000 rtl.r1000.nic.ext (1.0.2) <58 16 11 5 4 3 2>
60 1 0x34e0c000 0x2000 0x1000 com.apple.kext.OSvKernDSPLib (1.0) <5 4>
61 4 0x34e0e000 0x17000 0x16000 com.apple.iokit.IOAudioFamily (1.6.0b3) <60 32 11>
62 1 0x34ed8000 0x2e000 0x2d000 com.apple.driver.AppleFWAudio (1.2.2b1) <61 57 36 11>
63 0 0x34e25000 0x3000 0x2000 com.apple.driver.AppleMLANAudio (1.2.2b1) <62 57 36 11>
64 1 0x34f20000 0x34000 0x33000 com.apple.iokit.IOBluetoothFamily (1.7.14f14) <11>
65 1 0x34f06000 0xb000 0xa000 com.apple.driver.IOBluetoothHIDDriver (1.7.2b2) <64 20 11>
66 0 0x34f54000 0x6000 0x5000 com.apple.driver.AppleHIDMouse (1.1.3f1) <65 53 32 20 11>
67 0 0x34f5c000 0x1c000 0x1b000 com.apple.driver.AppleUSBAudio (2.1.0b1) <61 32 11>
68 0 0x34f7a000 0x9000 0x8000 com.apple.iokit.IOUSBUserClient (2.6.0) <32 11>
69 0 0x35006000 0x5000 0x4000 com.parallels.kext.ConnectUSB (2.5.0) <32 11 6 5 4 3>
70 1 0x350a2000 0x9000 0x8000 com.apple.iokit.IOSerialFamily (9.0.0d30) <6 5 4 3 2>
71 1 0x350ab000 0x9000 0x8000 com.apple.driver.Apple16X50Serial (1.9) <70 16 11>
72 0 0x35093000 0x2000 0x1000 com.apple.driver.Apple16X50ACPI (1.9) <71 17 11>
73 1 0x350b6000 0xe000 0xd000 com.apple.driver.IOPlatformPluginFamily (2.6.5d2) <11>
74 0 0x350c4000 0x8000 0x7000 com.apple.driver.ACPI_SMC_PlatformPlugin (2.6.5d2) <73 17 16 11 5 4 3>
75 3 0x3adce000 0x1b000 0x1a000 com.apple.iokit.IOGraphicsFamily (1.4.4) <16 6 5 4 3>
76 2 0x3ade9000 0xf000 0xe000 com.apple.iokit.IONDRVSupport (1.4.5) <75 16 6 5 4 3>
77 2 0x44009000 0x1da000 0x1d9000 com.apple.NVDAResman (4.4.0) <76 75 16 11 5 4 3 2>
78 0 0x441e3000 0x1ab000 0x1aa000 com.apple.nvidia.nv40hal (4.4.0) <77 16 11>
79 0 0x350cc000 0x4000 0x3000 com.apple.driver.AudioIPCDriver (1.0.2) <61 5 4 3 2>
80 0 0x350dd000 0xc000 0xb000 com.apple.driver.AppleAzaliaAudio (1.0.0d1) <61 55 5 4 3 2>
81 0 0x3512a000 0x8000 0x7000 com.apple.iokit.IOFireWireIP (1.5.4) <58 36 6 5 4 3 2>
82 0 0x3af15000 0x49000 0x48000 com.apple.GeForce (4.4.0) <77 76 75 16 11 5 4 3 2>
83 1 0x3adf8000 0xa000 0x9000 com.apple.driver.AppleSMC (1.0.3d1) <17 6 5 4 3>
84 0 0x35178000 0x3000 0x2000 com.apple.Dont_Steal_Mac_OS_X (6.0.1) <83 6 4 3 2>
86 0 0x56807000 0x6000 0x5000 com.parallels.kext.Pvsnet (2.2) <5 4 3 2>
87 0 0x57cb4000 0x8000 0x7000 com.apple.filesystems.ntfs (1.2.1) <4 2>
88 0 0x57cdc000 0xb000 0xa000 com.apple.filesystems.msdosfs (1.4.9) <6 5 4 2>
89 0 0x58434000 0x14000 0x13000 com.parallels.kext.hypervisor (2.2) <11 6 5 4 3 2>
90 0 0x58655000 0xa000 0x9000 com.parallels.kext.vmmain (2.2) <11 6 5 4 3 2>
91 0 0x589e2000 0x3000 0x2000 com.parallels.kext.Pvsvnic (2.2) <58 4 3>
93 0 0x3cc16000 0x5000 0x4000 com.apple.driver.XsanFilter (2.7.0) <29 11>

Yes drag Azalia out of the way but keep it you may need to go back to it if things don't work out with the AC97 kext

Hi, took it away and now nothing, i can kextload the ac97 with no issues.
i seemt o have come to an end

ive copied back the Apple Azalia kext, and sounds has come back,
i do have an old soundcard here pci, but i think it is a aztech 4d wave so i dont think even thats a goer.
anybody out there have any ideas?

Can you please tell me how you get your adi1986a working? I have the same soundchip but I'm not able to use it.

you have to load apple azalia audio kext file using kextload in terminal. you can find that file in the installation dvd or here, on forums