Nyan cat on RC2014

Finally! I've got the nyan demo working on my RC2014 with AY sound card and TMS video card.
Ever since I bought my first RC2014 I've been more interested in full-screen video than serial i/o. I bought a kit for J B Langston's TMS9918A video card, but it hasn't worked until recently. The problems were many and entirely with me but I'm glad that I've had them because I've learned so much about the TMS9918A along the way.
The music here is probably running fast. J B L's example code uses the ROMWBW timer, but I'm using CP/M and so had to change that code. I've simply called the pt3 PLAY routine once every TMS vblank, which is 60Hz I think, and I think PLAY should be called 50 times/second.
But it's so good to have this running and is a real milestone in my RC2014 life.