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Some small improvements to sync post and code

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Philipp Oppermann
2015-10-27 20:45:41 +01:00
parent 592bae3f87
commit f9325f5811
1 changed files with 15 additions and 6 deletions
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21
_posts/2015-10-23-printing-to-screen.md
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@@ -35,7 +35,7 @@ Number | Color | Number + Bright Bit | Bright Color
0x2 | Green | 0xa | Light Green 0x2 | Green | 0xa | Light Green
0x3 | Cyan | 0xb | Light Cyan 0x3 | Cyan | 0xb | Light Cyan
0x4 | Red | 0xc | Light Red 0x4 | Red | 0xc | Light Red
0x5 | Magenta | 0xd | Light Magenta 0x5 | Magenta | 0xd | Pink
0x6 | Brown | 0xe | Yellow 0x6 | Brown | 0xe | Yellow
0x7 | Light Gray | 0xf | White 0x7 | Light Gray | 0xf | White
@@ -47,14 +47,25 @@ Bit 4 is the _bright bit_, which turns for example blue into light blue. It is u
Now that we know how the VGA buffer works, we can create a Rust module to handle printing. To create a new module named `vga_buffer`, we just need to create a file named `src/vga_buffer.rs` and add a `mod vga_buffer` line to `src/lib.rs`. Now that we know how the VGA buffer works, we can create a Rust module to handle printing. To create a new module named `vga_buffer`, we just need to create a file named `src/vga_buffer.rs` and add a `mod vga_buffer` line to `src/lib.rs`.
### Colors ### Colors
First, we represent the different colors using an enum ([full file](#TODO)): First, we represent the different colors using an enum:
```rust ```rust
#[repr(u8)] #[repr(u8)]
pub enum Color { pub enum Color {
Black = 0, Black = 0,
Blue = 1, Blue = 1,
... Green = 2,
Cyan = 3,
Red = 4,
Magenta = 5,
Brown = 6,
LightGray = 7,
DarkGray = 8,
LightBlue = 9,
LightGreen = 10,
LightCyan = 11,
LightRed = 12,
Pink = 13,
Yellow = 14, Yellow = 14,
White = 15, White = 15,
} }
@@ -121,9 +132,7 @@ Now we can use the `Writer` to modify the buffer's characters. First we create a
impl Writer { impl Writer {
pub fn write_byte(&mut self, byte: u8) { pub fn write_byte(&mut self, byte: u8) {
match byte { match byte {
b'\n' => { b'\n' => self.new_line(),
self.new_line();
},
byte => { byte => {
if self.column_position >= BUFFER_WIDTH { if self.column_position >= BUFFER_WIDTH {
self.new_line(); self.new_line();