1 files changed, 5 insertions, 0 deletions
diff --git a/src/kernel/vga.c b/src/kernel/vga.c
index 42da312..6ae1588 100644
--- a/src/kernel/vga.c
+++ b/src/kernel/vga.c
@@ -12,6 +12,11 @@ void vga_set_color(uint8_t new_color) {
   mask = new_color << 8;
 }
 
+void vga_swap_color(uint16_t pos) {
+  uint8_t *color_byte = (uint8_t *)(VGA_START + (pos >> 8) * VGA_COLUMNS + (pos & 0xff)) + 1;
+  *color_byte = (*color_byte << 4) + (*color_byte >> 4);
+}
+
 static void vga_scroll() {
   for (uint32_t *i = (uint32_t *)VGA_START; i < (uint32_t *)(VGA_END - VGA_COLUMNS); ++i)
     *i = *(i + VGA_COLUMNS / 2);