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Pin-Timer + PreScaler

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This commit is contained in:
Paul Martin
2024-05-13 23:24:56 +02:00
parent c65d9c94de
commit b842d6eb05
2 changed files with 10 additions and 18 deletions
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8
src/main/java/fabrik/simulator/pic16f84/PreScaler.java
View File

@ -30,14 +30,8 @@ public class PreScaler {
scaler--;
if (scaler == 0) {
scaler = getFactor();
Timer.incrementFromInstructionCycle();
Timer.increment();
}
System.err.println("VT: " + scaler);
}
public static void cycles(int i) {
for (int j = 0; j < i; j++) {
decrement();
}
}
}

20
src/main/java/fabrik/simulator/pic16f84/Timer.java
View File

@ -1,7 +1,5 @@
package fabrik.simulator.pic16f84;
import javafx.stage.Stage;
public class Timer {
private static final int TIMERREG = 0x1;
private static final int T0IF = 0x2;
@ -25,12 +23,6 @@ public class Timer {
}
}
public static void incrementFromInstructionCycle(){
if (DataRegister.getDirectBit(OPTION, T0CS) == 0){
increment();
}
}
public static void incrementFromPin (int register){
if (DataRegister.getDirectBit(OPTION, T0CS) == 1){
int newpin = (register >> 4) & 1;
@ -39,12 +31,18 @@ public class Timer {
if (DataRegister.getDirectBit(OPTION, T0SE) == 0) {
// Low to high
if (newpin == 1 && oldpin == 0) {
increment();
if (PreScaler.isPrescalerOnTimer())
PreScaler.decrement();
else
increment();
}
} else {
// High to low
if (newpin == 0 && oldpin == 1) {
increment();
if (PreScaler.isPrescalerOnTimer())
PreScaler.decrement();
else
increment();
}
}
oldpin = newpin;
@ -52,7 +50,7 @@ public class Timer {
}
}
private static void increment() {
public static void increment() {
int timer = DataRegister.getDirectRegister(TIMERREG);
timer++;
if (timer > 0xFF){