Known bugs in Nestra v0.66:

The following is a list of known problems in the current version of NEStra. 
Let me know if you have a fix for any of these problems, or if you find any
other bugs not listed here:

- A few cycle times aren't counted accurately.

- Self-modifying code doesn't always work right.

- Some instruction forms do not handle I/O and will produce a breakpoint
  trap if used that way.  Use -i to ignore them, and send me a bug report
  if you encounter this problem.

- The following instuctions do not check for mapper writes: ASL LSR ROL ROR

- I suspect that the sprite code isn't completely correct; please tell me
  if you know what the problem is.

- Mirroring of the internal 2K RAM is not emulated.

- Doesn't implement the 6502 wrap-around bug (I really doubt that this
  would make a difference)

- Video code needs to be optimized for speed.

- No sound.

- No PAL mode (I don't have any games that need it)

- MMC2 support is incomplete

- Needs more mappers - submissions are welcome!
