I can't get to a pc for a bit, but I will attempt a crash course in inf files.
They do 4 basic tasks.
1 copy files into the right folders
2 add reg keys
3 delete files
4 delete reg keys
That's it.
Obviously there is logic to match windows versions, and hardware ids, to make decisions on which sections to run, but the ultimate end result is always those 4 tasks.
I'll attempt to run through what is run.
"[Wireless]
%BCM430B.DeviceDesc% = BCM43XX, PCI\VEN_14E4&DEV_4301&SUBSYS_040714E4
%BCM430B.DeviceDesc% = BCM43XX, PCI\VEN_14E4&DEV_4301&SUBSYS_040614E4
%BCM430G.DeviceDesc% = BCM43XG, PCI\VEN_14E4&DEV_4320&SUBSYS_041714E4
%BCM430G.DeviceDesc% = BCM43XG, PCI\VEN_14E4&DEV_4320&SUBSYS_041814E4
%BCM430A.DeviceDesc% = BCM43XA, PCI\VEN_14E4&DEV_4321
%BCM430M.DeviceDesc% = BCM43XM, PCI\VEN_14E4&DEV_4324
%BCM43pc.DeviceDesc% = BCM43PCM, PCMCIA\Broadcom-02D0-0406
%BCM43pc.DeviceDesc% = BCM43PCM, PCMCIA\Broadcom-802.11b_PCMCIA-02D0-0406"
So that looks mostly unintelligible but it's not that hard.
The first part is a variable. % anything % is always a variable. It will match something in the strings section of the inf.
The second part says what section to run for that device.
The 3rd as you've figured out is the hardware identifier
The important part is looking at the correct section for your thing to see what it does next.
The last one leads to this:
[BCM43PCM]
AddReg = BCM43XX.win.reg, BCM43XX.win.brcm.reg, common.reg, b.options.reg, bg.options.reg
CopyFiles = BCM43XX.sys.files
DriverVer=06/13/2003, 3.20.23.0
The addreg basically says as these 5 sections to the registry.
Copy files says copy this section
There are no delreg or defiles sections.
Those are the only 6 parts of the whole file that matter for that device.
If you want to strip it down to read it better, you can pretty much just delete everything else except the strings section. Though you can manually replace the variables with their string and cut that too if you want.
The registry sections are near enough to exactly a registry path/key/type/value that it shouldn't really be hard to figure out.
The main bit is abbreviated though. Hklm =hkey local machine. Etc.
Aside from that, it should be relatively trivial to convert those sections into a single reg file.
The copy files sections have some options that aren't often used, so there seem to be commas for no reason. In the inf they need to be there.
In this one, it's straightforward. There's only one file and it goes into folder 11.
There's a list of the special numbers as nicknames Ms uses for folders, but unless I hit my head 11 =windows\system
So your copy files amounts to copy that sys file to Windows\system.
I haven't nutted yours out exactly, and how you've modded it, but go have a look again and check that the ones you chose to mod are adding reg sections that make sense to you.
Good luck
