From: acevest <zhaoyanbai@126.com>
Date: Fri, 10 May 2024 14:01:50 +0000 (+0800)
Subject: 修复未正确初始化8253的问题
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/Bv9ARM.ch08.html?a=commitdiff_plain;h=52eb50383a52f76f0d70d5df5bea27a528aceeb2;p=kernel.git

修复未正确初始化8253的问题
---

diff --git a/kernel/clock.c b/kernel/clock.c
index 0bcd146..6c7ac63 100644
--- a/kernel/clock.c
+++ b/kernel/clock.c
@@ -81,7 +81,7 @@ void setup_i8253(uint16_t hz) {
     const uint8_t read_write_latch = 3;  // 0 锁存数据供CPU读；1只读写低字节；2只读写高字节；3先读写低字节，后读写高字节
     const uint8_t mode = 2;  //
 
-    const uint8_t cmd = (counter_no << 6) | (read_write_latch << 4) || (mode << 1);  // 第0位为0表示二进制，为1表示BCD
+    const uint8_t cmd = (counter_no << 6) | (read_write_latch << 4) | (mode << 1);  // 第0位为0表示二进制，为1表示BCD
 
     const uint8_t i8253_cmd_port = 0x43;
     const uint8_t i8253_data_port = 0x40 + counter_no;