7) Fourth (use of color and CPU) WARNING! ! This guide was created following a logical thread and trying not to repeat things already covered in previous chapters. So if overridden chapters going too fast, you risk having to set up a mess on his head and as a result of failing to learn what you wanted. Having said that go!
E '' s time to more advanced concepts. During this lesson will explain how to overclock our CPU to the true speed of 333 MHz, type text and not true to debug and understand how the colors. What we will do now is to essentially enable the 'user can change the background color and display the components of that color on the screen. To understand the value components of each color that should be da0 at 255. First of all it is good to explain a thing. Overclock a PC is a practice that involves risks because of 'enormous heat generated by the CPU and may cause why the break, on the other hand gives us more power. For the PSP is different because it is not a true overclock. In fact, Sony wanted to give us a cpu from 333 mhz but did not want you would use the full right from 'beginning. As we all know the PSP runs on battery power and more power = less battery life. So he wanted to keep the CPU frequency at an acceptable speed so that the battery would last much longer. Other reasons why Sony would not allow the default maximum speed could also be related to programming, the programmers to get used to avoid wasting resources, and then maybe later to give an impetus to new games that could have better graphics discovering a new power. But in my opinion maybe it is related more to 'use of the UMD optical drive that absorbs much energy.
So we do not need all that power for our little program, but it might be helpful to know that there is more power and can be used, decreasing or increasing at will!
framebuffer.c
framebuffer.h
graphics.c
graphics.h
If you do not you download it from the previous lesson.
Now We use the 4 libraries named and used in the previous lesson: 
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