Various Changes

[tpg/acess2.git] / Kernel / arch / x86 / time.c

diff --git a/Kernel/arch/x86/time.c b/Kernel/arch/x86/time.c
index adc2d13..9cccec7 100644 (file)
--- a/Kernel/arch/x86/time.c
+++ b/Kernel/arch/x86/time.c
@@ -8,7 +8,8 @@
 // === MACROS ===
 #define        NUM_TIMERS      8
 #define        TIMER_QUANTUM   100
-#define TIMER_FREQ     1024    //Hz
+#define TIMER_RATE     13      // (Max: 15, Min: 2) - 15 = 1Hz, 13 = 4Hz, 10 = 1024Hz
+#define TIMER_FREQ     (32768>>TIMER_RATE)     //Hz
 #define MS_PER_TICK_WHOLE      (1000/(TIMER_FREQ))
 #define MS_PER_TICK_FRACT      ((Uint64)(1000*TIMER_FREQ-((Uint64)MS_PER_TICK_WHOLE)*0x80000000/TIMER_FREQ))
 
@@ -41,6 +42,14 @@ int Time_Setup()
        outb(0x70, inb(0x70)&0x7F);     // Disable NMIs
        __asm__ __volatile__ ("cli");   // Disable normal interrupts
        
+       // Set IRQ8 firing rate
+       outb(0x70, 0x0A);       // Set the index to register A
+       val = inb(0x71); // Get the current value of register A
+       outb(0x70, 0x0A); // Reset index to A
+       val &= 0xF0;
+       val |= TIMER_RATE;
+       outb(0x71, val);        // Update the timer rate
+               
        // Enable IRQ8
        outb(0x70, 0x0B);       // Set the index to register B
        val = inb(0x71);        // Read the current value of register B
@@ -51,7 +60,7 @@ int Time_Setup()
        outb(0x70, inb(0x70)|0x80);     // Disable NMIs
        
        // Install IRQ Handler
-       //IRQ_AddHandler(8, Time_Interrupt);
+       IRQ_AddHandler(8, Time_Interrupt);
        return 0;
 }
 
@@ -71,7 +80,7 @@ void Time_Interrupt()
        
        //Log("giTimestamp = %lli", giTimestamp);
        
-       Timer_CallTimers();
+       //Timer_CallTimers();
 
        // Make sure the RTC Fires again
        outb(0x70, 0x0C); // Select register C