Demo colours

3 files changed, 93 insertions, 20 deletions

diff --git a/kernel/io/vga/text_mode_diplay.h b/kernel/io/vga/text_mode_diplay.h
index 269a6ce..9441925 100644
--- a/kernel/io/vga/text_mode_diplay.h
+++ b/kernel/io/vga/text_mode_diplay.h
@@ -1,4 +1,4 @@
-void clear_screen();
-void print(char *msg);
-void print_ln(char *msg);
-void set_text_colour(int foreground, int background);
\ No newline at end of file
+void vga_clear_screen();
+void vga_print(char *msg);
+void vga_print_ln(char *msg);
+void vga_set_text_colour(int foreground, int background);
\ No newline at end of file
diff --git a/kernel/io/vga/text_mode_display.c b/kernel/io/vga/text_mode_display.c
index 958eb87..4844524 100644
--- a/kernel/io/vga/text_mode_display.c
+++ b/kernel/io/vga/text_mode_display.c
@@ -8,7 +8,7 @@ char *video_ram = (char *)0xB8000;
 int cursor_pos = 0;
 int char_attribute_byte = 0x07;
 
-void clear_screen()
+void vga_clear_screen()
 {
   for (int i = 0; i < FRAME_SIZE; i = i + 2)
   {
@@ -18,7 +18,7 @@ void clear_screen()
   cursor_pos = 0;
 }
 
-void print(char *msg)
+void vga_print(char *msg)
 {
   int j = 0;
   while (msg[j] != '\0')
@@ -29,14 +29,14 @@ void print(char *msg)
   }
 }
 
-void print_ln(char *msg)
+void vga_print_ln(char *msg)
 {
-  print(msg);
+  vga_print(msg);
   int current_line = cursor_pos / COLS;
   cursor_pos = (current_line + 1) * COLS;
 }
 
-void set_text_colour(int foreground, int background) 
+void vga_set_text_colour(int foreground, int background) 
 {
   char_attribute_byte = (background << 4) | foreground;
 }
\ No newline at end of file
diff --git a/kernel/kernel.c b/kernel/kernel.c
index d10060a..fa659dc 100644
--- a/kernel/kernel.c
+++ b/kernel/kernel.c
@@ -1,23 +1,96 @@
 #include "./io/vga/text_mode_diplay.h"
 #include "./io/vga/colours.h"
 
-void run_kern()
+void run_kern_demo()
 {
-  clear_screen();
+  vga_set_text_colour(COLOUR_LIGHT_GREEN, COLOUR_BLACK);
+  vga_clear_screen();
 
-  print_ln("I am a kernel!");
-  set_text_colour(COLOUR_WHITE, COLOUR_GREEN);
-  print("I am on a new line");
-  print_ln(" - I am not");
+  vga_print_ln("  _   _              ____   _____ ");
+  vga_print_ln(" | | (_)            / __ \\ / ____|");
+  vga_print_ln(" | |_ _ _ __  _   _| |  | | (___  ");
+  vga_print_ln(" | __| | '_ \\| | | | |  | |\\___ \\ ");
+  vga_print_ln(" | |_| | | | | |_| | |__| |____) |");
+  vga_print_ln("  \\__|_|_| |_|\\__, |\\____/|_____/ ");
+  vga_print_ln("               __/ |              ");
+  vga_print_ln("              |___/               ");
 
-  set_text_colour(COLOUR_RED, COLOUR_WHITE);
-  print_ln("red on white");
+  vga_print_ln("");
+  vga_print_ln("Supported colours");
+  vga_set_text_colour(COLOUR_BLUE, COLOUR_BLACK);
+  vga_print("blue ");
+  vga_set_text_colour(COLOUR_GREEN, COLOUR_BLACK);
+  vga_print("green ");
+  vga_set_text_colour(COLOUR_CYAN, COLOUR_BLACK);
+  vga_print("cyan ");
+  vga_set_text_colour(COLOUR_RED, COLOUR_BLACK);
+  vga_print("red ");
+  vga_set_text_colour(COLOUR_PURPLE, COLOUR_BLACK);
+  vga_print("purple ");
+  vga_set_text_colour(COLOUR_BROWN, COLOUR_BLACK);
+  vga_print("brown ");
+  vga_set_text_colour(COLOUR_GRAY, COLOUR_BLACK);
+  vga_print_ln("gray ");
+  vga_set_text_colour(COLOUR_DARK_GREY, COLOUR_BLACK);
+  vga_print("dark gray ");
+  vga_set_text_colour(COLOUR_LIGHT_BLUE, COLOUR_BLACK);
+  vga_print("light blue ");
+  vga_set_text_colour(COLOUR_LIGHT_GREEN, COLOUR_BLACK);
+  vga_print("light green ");
+  vga_set_text_colour(COLOUR_LIGHT_CYAN, COLOUR_BLACK);
+  vga_print_ln("light cyan");
+  vga_set_text_colour(COLOUR_LIGHT_RED, COLOUR_BLACK);
+  vga_print("light red ");
+  vga_set_text_colour(COLOUR_LIGHT_PURPLE, COLOUR_BLACK);
+  vga_print("light purple ");
+  vga_set_text_colour(COLOUR_YELLOW, COLOUR_BLACK);
+  vga_print("yellow ");
+  vga_set_text_colour(COLOUR_WHITE, COLOUR_BLACK);
+  vga_print_ln("white ");
 
-  set_text_colour(COLOUR_WHITE, COLOUR_BLUE);
-  print_ln("white on blue");
+  vga_set_text_colour(COLOUR_BLACK, COLOUR_WHITE);
+  vga_print("B");
+  vga_set_text_colour(COLOUR_WHITE, COLOUR_BLUE);
+  vga_print("A");
+  vga_set_text_colour(COLOUR_WHITE, COLOUR_GREEN);
+  vga_print("C");
+  vga_set_text_colour(COLOUR_WHITE, COLOUR_CYAN);
+  vga_print("K");
+  vga_set_text_colour(COLOUR_WHITE, COLOUR_RED);
+  vga_print("G");
+  vga_set_text_colour(COLOUR_WHITE, COLOUR_PURPLE);
+  vga_print("R");
+  vga_set_text_colour(COLOUR_WHITE, COLOUR_BROWN);
+  vga_print("O");
+  vga_set_text_colour(COLOUR_WHITE, COLOUR_GRAY);
+  vga_print("U");
+  vga_set_text_colour(COLOUR_WHITE, COLOUR_LIGHT_BLUE);
+  vga_print("N");
+  vga_set_text_colour(COLOUR_BLACK, COLOUR_YELLOW);
+  vga_print("D");
+  vga_set_text_colour(COLOUR_BLACK, COLOUR_LIGHT_GREEN);
+  vga_print(" ");
+
+  vga_set_text_colour(COLOUR_BLACK, COLOUR_LIGHT_CYAN);
+  vga_print("C");
+  vga_set_text_colour(COLOUR_WHITE, COLOUR_LIGHT_RED);
+  vga_print("O");
+  vga_set_text_colour(COLOUR_WHITE, COLOUR_LIGHT_PURPLE);
+  vga_print("L");
+  vga_set_text_colour(COLOUR_BLACK, COLOUR_WHITE);
+  vga_print("O");
+  vga_set_text_colour(COLOUR_WHITE, COLOUR_RED);
+  vga_print("U");
+  vga_set_text_colour(COLOUR_WHITE, COLOUR_PURPLE);
+  vga_print("R");
+  vga_set_text_colour(COLOUR_WHITE, COLOUR_BROWN);
+  vga_print("S");
+  vga_set_text_colour(COLOUR_WHITE, COLOUR_GRAY);
 }
 
+
+
 void kernel_entrypoint()
 {
-  run_kern();
+  run_kern_demo();
 }