code is loaded to $600. Executed at $601 (limitation in opencbm, sorry).
output is written to $700.
naming conventions for files in this directory is:
	[v]<opcode>[c][d]
	v is for value output (otherwise will output flags).
	c is for carry-setting in the beginning (otherwise carry clear).
	d is for decimal-setting in the beginning (otherwise non-decimal).
most programs here set overflow and clear decimal and carry before doing anything else.