General
=======
* File operations fail; when one file is opened and then subsequent
files are created and accessed.
* EEPROM loading is not automatic
* Video interrupts are incorrectly implemented

Triangle Engine
===============

* Incorrect triangle rasterisation, causes seams and extra pixels
* Incomplete RLE decompression
* Needs dithering


Game Specific
-------------

Evil Night
==========

* Zombies are invincible or have no hit points
* Random freezes
* Missing sky texture in intro
- Geometry etc is there but the rw value passed is incredibly small.
* Text is missing top pixels when screen is flipped

Total Vice
==========

* Flipped text missing top line
* Line gap in test pattern
- 127.98720 (0x42fff972) / 0.99989998 (0x3f7ff972) = 128
  Should equal 127
  
  
Battle Tryst
============
* Freezes
* Does not advance past disclaimer
* Starting a game causes a load of unmapped writes. This is related to audio play function.
Soundtest volume also messes things up

Polystars
=========
* Doesn't load any more.