Timing with a 12 MHz clock (XS40 clock)

• Line: 31.77 usec x 12 MHz = 381 clocks/line

  • we will display 256 pixels/line
  • one pixel/clock
  • rest is front porch, back porch and HSYNC

• Frame: 16.784 msec x 12 MHz = 201,406 clocks/frame (!)

  • 201,406 / 381 clocks/line = 528 lines
  • we can display 480 lines
  • rest is front porch, back porch and VSYNC

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