1 files changed, 11 insertions, 2 deletions
diff --git a/src/tty.c b/src/tty.c
index f9413b4..c630e23 100644
--- a/src/tty.c
+++ b/src/tty.c
@@ -23,11 +23,12 @@ extern const uint8_t font[97][8];
 
 static uint8_t cursor = 0;
 static uint8_t timer = 0;
+u8 blink = 0;
 
 void
 blink_cursor(void) __critical __interrupt(3)
 {
-	if (++timer >= 75) {
+	if (++timer >= 75 && blink) {
 		uint8_t i;
 
 		tft_set_area(8 * col, 8 * row, 8, 8);
@@ -131,10 +132,18 @@ addch(char c)
 		return;
 	}
 
-	tft_set_area(8 * col, 8 * row, 8, 8);
+	DI;
+	u8 tmp = blink;
+	blink = 0;
+	EI;
 
+	tft_set_area(8 * col, 8 * row, 8, 8);
 	draw(c);
 
+	DI;
+	blink = tmp;
+	EI;
+
 	buf[(head + row) % TTY_HEIGHT][col] = c;
 	advance();
 }