From 6d2fb4c563872added7156e3d99dc816bc3ad26f Mon Sep 17 00:00:00 2001
From: tracer-ics2023 <tracer@njuics.org>
Date: Sat, 14 Sep 2024 23:09:43 +0800
Subject: [PATCH] =?UTF-8?q?>=20=20compile=20NEMU=20221220000=20=E5=BC=A0?=
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---
 nemu/src/device/vga.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nemu/src/device/vga.c b/nemu/src/device/vga.c
index 4914906..0e4118c 100644
--- a/nemu/src/device/vga.c
+++ b/nemu/src/device/vga.c
@@ -75,7 +75,7 @@ static inline void update_screen() {
 void vga_update_screen() {
   // TODO: call `update_screen()` when the sync register is non-zero,
   // then zero out the sync register
-  if (*sync_reg) {
+  if (*sync_reg != 0) {
     update_screen();
     *sync_reg = 0;
   }