8086 emulator testsuite?

[superfury]

Are there any 8086 emulator test suites out there?

I've made an emulator, trying to run MS-DOS 3.3, but when i run it i get an invalid OPcode 0x68? (From the boot loader, according to the current CS:IP&registers).

EDIT: More info:
Opcode 0x68 at 0x0000:0x7C07.