add pit indicator
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@ -25,6 +25,16 @@
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void PIT::interval (int us) {
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/* hier muss Code eingefuegt werden */
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IOport control(0x43);
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control.outb(0x36); // Zähler 0 Mode 3
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unsigned int cntStart = (1193180.0 / 1000000.0) * us; // 1.19Mhz PIT
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IOport data0(0x40);
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data0.outb(cntStart & 0xFF); // Zaehler-0 laden (Lobyte)
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data0.outb(cntStart >> 8); // Zaehler-0 laden (Hibyte)
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}
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@ -40,6 +50,8 @@ void PIT::plugin () {
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/* hier muss Code eingefuegt werden */
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intdis.assign(IntDispatcher::timer, *this);
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pic.allow(PIC::timer);
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}
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@ -63,6 +75,20 @@ void PIT::trigger () {
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// und ein weiterer Thread rechnen moechte
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/* hier muss Code eingefuegt werden */
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// Indicator
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if (systime - this->last_indicator_refresh >= 10) {
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this->indicator_pos = (this->indicator_pos + 1) % 4;
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kout.show(79, 0, this->indicator[this->indicator_pos]);
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this->last_indicator_refresh = systime;
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}
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// Preemption
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if (scheduler.isInitialized()) {
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}
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}
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@ -16,12 +16,15 @@
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class PIT : public ISR {
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private:
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PIT(const PIT ©); // Verhindere Kopieren
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PIT(const PIT ©) = delete; // Verhindere Kopieren
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private:
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enum { time_base = 838 }; /* ns */
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int timer_interval;
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char indicator[4] = {'|', '/', '-', '\\'};
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unsigned int indicator_pos = 0;
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unsigned long last_indicator_refresh = 0;
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public:
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// Zeitgeber initialisieren.
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PIT (int us) {
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@ -32,6 +32,7 @@ extern "C" void int_disp(unsigned int slot);
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void int_disp(unsigned int vector) {
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/* hier muss Code eingefuegt werden */
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if (vector < 32) {
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bs_dump(vector);
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cpu.halt();
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@ -45,6 +45,7 @@ int main() {
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// Tastatur-Unterbrechungsroutine 'einstoepseln'
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/* hier muss Code eingefuegt werden */
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kb.plugin();
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pit.plugin();
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// Interrupts erlauben (Tastatur)
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/* hier muss Code eingefuegt werden */
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