改善了走时不准的问题，倒计时手动停止后转为正计时，增加了中英文切换的说明。

2024-03-27 10:35:34 +08:00
parent 08a0e08f4d
commit fedca16fb5
3 changed files with 9 additions and 5 deletions
--- a/labcodes_answer/lab1_result/kern/driver/clock.c
+++ b/labcodes_answer/lab1_result/kern/driver/clock.c
@@ -33,8 +33,9 @@ void
 clock_init(void) {
    // set 8253 timer-chip
    outb(TIMER_MODE, TIMER_SEL0 | TIMER_RATEGEN | TIMER_16BIT);
-    outb(IO_TIMER1, TIMER_DIV(1000) % 256);
-    outb(IO_TIMER1, TIMER_DIV(1000) / 256);
+    // 经过多次试验发现原始的10毫秒一次中断（即除以100）是最准时的，不要擅自改中断频率
+    outb(IO_TIMER1, TIMER_DIV(100) % 256);
+    outb(IO_TIMER1, TIMER_DIV(100) / 256);

    // initialize time counter 'ticks' to zero
    ticks = 0;