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Remove magic numbers

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This commit is contained in:
Thomas Lovén 2017-12-04 13:27:04 +01:00
parent b50b32afa9
commit a652bbb05e
2 changed files with 9 additions and 4 deletions
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8
src/kernel/drivers/vga.c
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@ -23,10 +23,10 @@ void vga_init()
void movecursor() void movecursor()
{ {
outb(0x3D4, 0x0F); outb(VGA_ADDRESS_PORT, VGA_REGISTER_CURSOR_POS_LOW);
outb(0x3D5, (uint8_t)(cursor & 0xFF)); outb(VGA_DATA_PORT, (uint8_t)(cursor & 0xFF));
outb(0x3D4, 0x0E); outb(VGA_ADDRESS_PORT, VGA_REGISTER_CURSOR_POS_HIGH);
outb(0x3D5, (uint8_t)((cursor >> 8) & 0xFF)); outb(VGA_DATA_PORT, (uint8_t)((cursor >> 8) & 0xFF));
} }
void flush() void flush()

5
src/kernel/include/vga.h
View File

@ -12,3 +12,8 @@
void vga_init(); void vga_init();
void vga_write(char c); void vga_write(char c);
#define VGA_ADDRESS_PORT 0x3D4
#define VGA_DATA_PORT 0x3D5
#define VGA_REGISTER_CURSOR_POS_LOW 0xF
#define VGA_REGISTER_CURSOR_POS_HIGH 0xE