look for tests here: http://wiki.nesdev.com/w/index.php/Emulator_tests

==blargg's tests==

MMC3: 
	FAIL for 6. neither nintendulator or fceux pass this. we should be able to pass it once mmc3 variant support is finalized.

ppu tests: 
	PASS for all but power_up_palette.nes which is lame

ppu_vbl_nmi:
	FAIL for 10. But hardly anyone passes this.....
	
sprite hit tests:
	FAIL for 9 and 10. fceux passes 10 (oldppu) and nintendulator passes both. 
	both are not going to work any time soon due to sprite pattern decoding being separate from BG pattern fetching instead of interleaved.

cpu_timing_test.nes
	PASS
	
official_only.nes
	PASS
	
instr_timing.nes
	PASS	
	
cpu_interrupts.nes
	PASS
	
instr_misc.nes
	PASS
	
all_instrs.nes
	FAIL (undocumented opcodes)
	
=============
	
nestest.nes
	PASS

NEStress.nes
	FAIL in several cases, but this test is not highly regarded and may be inaccurate.