gbowne1/ClassicOS
2
2
Fork 0
mirror of https://github.com/gbowne1/ClassicOS.git synced 2025-11-16 22:35:26 -08:00
Code Issues 2 Packages Projects 1 Releases Wiki Activity

Update terminal.c

Browse Source 
Fixed minor issue with terminal
This commit is contained in:
Gregory Kenneth Bowne
2025-11-10 05:19:25 -08:00
committed by GitHub
parent 95f0507c24
commit 9ac3a2b862
1 changed files with 4 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
kernel/terminal.c
View File

@@ -12,6 +12,7 @@ static uint16_t* const vga_buffer = (uint16_t*) VGA_ADDRESS;
static uint8_t cursor_x = 0; static uint8_t cursor_x = 0;
static uint8_t cursor_y = 0; static uint8_t cursor_y = 0;
static uint8_t current_color = WHITE_ON_BLACK; static uint8_t current_color = WHITE_ON_BLACK;
static uint16_t last_cursor_pos = 0xFFFF;
void terminal_initialize(void) { void terminal_initialize(void) {
for (uint16_t y = 0; y < VGA_HEIGHT; y++) { for (uint16_t y = 0; y < VGA_HEIGHT; y++) {
@@ -96,8 +97,10 @@ void terminal_clear(void) {
update_cursor(); update_cursor();
} }
void update_cursor() { void update_cursor(void) {
uint16_t pos = cursor_y * VGA_WIDTH + cursor_x; uint16_t pos = cursor_y * VGA_WIDTH + cursor_x;
if (pos == last_cursor_pos) return;
last_cursor_pos = pos;
outb(0x3D4, 0x0F); outb(0x3D4, 0x0F);
outb(0x3D5, (uint8_t)(pos & 0xFF)); outb(0x3D5, (uint8_t)(pos & 0xFF));