Help "unimplemented trap"???

Well...

...make sure you're forcing it into X (which shouldn't have extensions you can turn off), and hold down command-s while rebooting. Run fsck, and type logout. If that doesn't work, then you've got problems.

 

Do you get the bomb when running Classic or just when you boot with OS 9?
Have you TRIED opening the extensions manager on OS 9 startup or does it bomb before it allows you to?
Have you installed any Classic programs recently?
Have you tried zapping the PRAM?

 

Do you run with all extensions on normally or do you turn everything you don't absolutely need off using the extension manager program?

Does it still give you a unimplemented trap error when booting into classic? or when you boot into OS 9 and turn all extensions off?

What programs, shareware, or hardware was recently loaded or upgraded?

Have you looked through the system folder for files that may be causing the problem?

(Search System Folder, Fonts, Control Panels, Extensions, Startup Items for files out of place - such as a font in the extensions folder)

Have yun Disk First Aid, fsck -y, and rebuilt the desktop to rule out a file system error? Zapped pram to rule out corruption there?

 

force OSX

You can hold down option while booting and see it will display a list of your Bootable disks/OS's. Take a look and see if your Mac can recognise OS X or not. If you can, pick OSX and let it boot. It could be you have a problem with OS9 and its stuck pointing at OS9 as the boot drive. I have had a problem like that before. I picked OS X as my bootdrive, rebooted, it came up in OS9 and crashed. Did the option thing and came up in OSX.