Makes the demo run correctly on modern emulators and real hardware.
- Fixes a hang at boot caused by the demo never turning on the display or drawing.
- Fixes the column table never being set.
- Fixes the timing by counting drawing cycles instead of VIP status register changes.
- Fixes auto-skipping screens by reading the controller only after the hardware read has finished.
- Fixes the wavy bars on the title screen by updating the H-Bias animation once per frame and only after drawing has finished.