The entire code for the slave 68k CPU has been ported. This CPU solely controls road generation and interfacing with the road hardware. It's probably the most complex area of the game code. As expected, debugging the code was relatively painful. The code now needs a considerable clean-up, but I'll do that once more of the game code is hooked up, to ensure it's more obvious if I break something whilst refactoring.
The following screenshot shows a section of curved track using both road layers on Coconut Beach. You can begin to see that all the elements are coming together and we're now in a position where we have the building blocks to rewrite the higher level code.