chiptest:

OP:		3XNN	4XNN	5XY0	7XNN
9XY0	ANNN	BNNN	CXNN
8X:		8XY0	8XY1	8XY2	8XY3
8XY4	8XY5	8XY6	8XY7	8XYE
FX:		FX07	FX15	FX1E	FX29
FX33	FX55	FX65

Notes:

• ANNN: Mandatory. No image will load without it.
• CXNN: There's a 1 in 256 chance that it'll return a false positive.
• 8XY4: Carry check not implemented.
• 8XY6/8XYE: Ambiguous instruction. 8XYE fails in Octo.
• FX07/FX15: Fails if emulation is slow.
• FX29: Doesn't work in Octo as its implementation is masked.

chiptest-mini:

1NNN	6XNN
ANNN	DXYN

Notes:

1NNN (optional): Used to loop through a single instruction infinitely. Test will still work without implementing it but will reach the end of memory.