Changes
/* TODO : Scanline */
It is also a simple visual effect to enable/disable, making games looking like old CRT monitors.
=== DONE : PWM ===
Using a simple PWM, data is entered at a certain speed, the PWM clock speed.
If you simulate a constant PWM output signal at middle range of voltage (state just between 0V and 5V : 2.5V), it results a alternance of 0V and 5V, that result a noise sound. In Arkanoid, this defect make some continues sounds instead of silents...
My idea is generating a sound having a frequency upper that dog ultra sound, when I want to simulate a constant 2.5V.
For this I do use two clocks entries in my PWM : one about data entry, and another about algorithm execution.
This result a high quality sound output (in addition to this nice [http://www.fpgaarcade.com/library.htm Yamaha sound chip from fpgaarcade])
=== DONE : FAT32 fragmented files support ===
