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Author SHA1 Message Date
Darkress
36f018835f implemented Movf Instruction 2023-06-04 20:41:56 +02:00
17 changed files with 29 additions and 403 deletions

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@@ -2,11 +2,9 @@ package de.darkress.pic16f84sim;
import de.darkress.pic16f84sim.commands.Command; import de.darkress.pic16f84sim.commands.Command;
import de.darkress.pic16f84sim.decoder.CommandDecoder; import de.darkress.pic16f84sim.decoder.CommandDecoder;
import de.darkress.pic16f84sim.gui.SramTable;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
import javax.swing.*;
import java.util.ArrayList; import java.util.ArrayList;
class Main class Main
@@ -14,21 +12,12 @@ class Main
public static void main(String[] args) { public static void main(String[] args) {
ArrayList<Command> program = new ArrayList<>(); ArrayList<Command> program = new ArrayList<>();
Memory.workingRegister = 0x01; Memory.workingRegister = 0x1A;
Memory.setRegister(0x14, 0xA7); //240 << 224 Memory.setRegister(0x14, 0x1B);
program.add(CommandDecoder.decode(0x1C94)); program.add(CommandDecoder.decode(0x0894));
for(int i = 0; i < program.size(); i++) for(int i = 0; i < program.size(); i++)
{ {
program.get(ProgramCounter.getPc()).execute(); program.get(ProgramCounter.getPc()).execute();
} }
SramTable table = new SramTable();
JFrame frame = new JFrame("Table Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(table.getTable());
frame.pack();
frame.setVisible(true);
//table.setValueAt("test", 15, 7);
} }
} }

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@@ -1,26 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Bcf extends BitOrientedCommandUtils implements Command
{
private final int address;
private int bitPlacement;
public Bcf(int input)
{
address = input & 0x007F;
bitPlacement = checkBitPlacement(input);
}
@Override
public void execute()
{
int result = Memory.getRegister(address);
result &= ~(1 << bitPlacement); //Mask n-th bit with 0
Memory.setRegister(address, result);
ProgramCounter.incPC();
}
}

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@@ -1,11 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
public class BitOrientedCommandUtils
{
protected int checkBitPlacement(int input)
{
return ((input & 0x0380) >>7);
}
}

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@@ -1,26 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Bsf extends BitOrientedCommandUtils implements Command
{
private final int address;
private int bitPlacement;
public Bsf(int input)
{
address = input & 0x007F;
bitPlacement = checkBitPlacement(input);
}
@Override
public void execute()
{
int result = Memory.getRegister(address);
result |= (1 << bitPlacement);
Memory.setRegister(address, result);
ProgramCounter.incPC();
}
}

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@@ -1,29 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Btfsc extends BitOrientedCommandUtils implements Command
{
private final int address;
private int bitPlacement;
public Btfsc(int input)
{
address = input & 0x007F;
bitPlacement = checkBitPlacement(input);
}
@Override
public void execute()
{
int result = Memory.getRegister(address);
if((result & (1 << bitPlacement)) == 0) //Test if bit is clear
{
ProgramCounter.incPC();
}
ProgramCounter.incPC();
}
}

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@@ -1,29 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Btfss extends BitOrientedCommandUtils implements Command
{
private final int address;
private int bitPlacement;
public Btfss(int input)
{
address = input & 0x007F;
bitPlacement = checkBitPlacement(input);
}
@Override
public void execute()
{
int result = Memory.getRegister(address);
if((result & (1 << bitPlacement)) > 0) //Test if bit is set
{
ProgramCounter.incPC();
}
ProgramCounter.incPC();
}
}

View File

@@ -26,7 +26,7 @@ public class Decfsz extends FileRegisterCommandUtils implements Command
if((result % 256) == 0) if((result % 256) == 0)
{ {
Nop nop = new Nop(); Nop nop = new Nop();
nop.execute(); // TODO: What happens if an interrupt gets triggered during the nop execution? nop.execute();
} }
ProgramCounter.incPC(); ProgramCounter.incPC();
} }

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@@ -26,7 +26,7 @@ public class Incfsz extends FileRegisterCommandUtils implements Command
if((result % 256) == 0) if((result % 256) == 0)
{ {
Nop nop = new Nop(); Nop nop = new Nop();
nop.execute(); // TODO: What happens if an interrupt gets triggered during the nop execution? nop.execute();
} }
ProgramCounter.incPC(); ProgramCounter.incPC();
} }

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@@ -1,25 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Movwf extends FileRegisterCommandUtils implements Command
{
private final int address;
private final boolean destinationBit;
public Movwf(int input)
{
address = input & 0x007F;
destinationBit = true;
}
@Override
public void execute()
{
int result = Memory.workingRegister;
writeToDestination(destinationBit, address, result);
ProgramCounter.incPC();
}
}

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@@ -1,35 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Rlf extends FileRegisterCommandUtils implements Command
{
private final int address;
private final boolean destinationBit;
public Rlf(int input)
{
address = input & 0x007F;
destinationBit = checkDestinationBit(input);
}
@Override
public void execute()
{
int register = Memory.getRegister(address);
int newCarry = register >>7;
int oldCarry = Memory.getCarryBit();
register = ((register <<1) + oldCarry) & 0xFF;
if(newCarry == 1)
{
Memory.setCarryBit();
} else if(newCarry == 0){
Memory.clearCarryBit();
}
writeToDestination(destinationBit, address, register);
ProgramCounter.incPC();
}
}

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@@ -1,35 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Rrf extends FileRegisterCommandUtils implements Command
{
private final int address;
private final boolean destinationBit;
public Rrf(int input)
{
address = input & 0x007F;
destinationBit = checkDestinationBit(input);
}
@Override
public void execute()
{
int register = Memory.getRegister(address);
int newCarry = register & 0x01;
int oldCarry = Memory.getCarryBit();
register = (oldCarry << 7) + (register >>1);
if(newCarry == 1)
{
Memory.setCarryBit();
} else if(newCarry == 0){
Memory.clearCarryBit();
}
writeToDestination(destinationBit, address, register);
ProgramCounter.incPC();
}
}

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@@ -1,49 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Subwf extends FileRegisterCommandUtils implements Command
{
private final int address;
private final boolean destinationBit;
public Subwf(int input)
{
address = input & 0x007F;
destinationBit = checkDestinationBit(input);
}
@Override
protected void checkCarryBit(int result)
{
if(result <= 255){
Memory.clearCarryBit();
} else{
Memory.setCarryBit();
}
}
@Override
protected void checkDigitCarryBit(int literal)
{
if(((literal & 0x0F) - (Memory.workingRegister & 0x0F)) < 0){
Memory.clearDigitCarryBit();
} else{
Memory.setDigitCarryBit();
}
}
@Override
public void execute()
{
int result = Memory.getRegister(address) - Memory.workingRegister + 256;
checkZeroBit(result);
checkCarryBit(result);
checkDigitCarryBit(Memory.getRegister(address));
writeToDestination(destinationBit, address, result % 256);
ProgramCounter.incPC();
}
}

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@@ -1,27 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Swapf extends FileRegisterCommandUtils implements Command
{
private final int address;
private final boolean destinationBit;
public Swapf(int input)
{
address = input & 0x007F;
destinationBit = checkDestinationBit(input);
}
@Override
public void execute()
{
int result = (Memory.getRegister(address) <<4) & 0xF0;
int tmp = Memory.getRegister(address) >>4;
result += tmp;
writeToDestination(destinationBit, address, result);
ProgramCounter.incPC();
}
}

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@@ -1,27 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Xorwf extends FileRegisterCommandUtils implements Command
{
private final int address;
private final boolean destinationBit;
public Xorwf(int input)
{
address = input & 0x007F;
destinationBit = checkDestinationBit(input);
}
@Override
public void execute()
{
int result = Memory.getRegister(address) ^ Memory.workingRegister;
checkZeroBit(result);
writeToDestination(destinationBit, address, result);
ProgramCounter.incPC();
}
}

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@@ -27,15 +27,20 @@ public class CommandDecoder
case 0x800: case 0x800:
return new Movf(input); return new Movf(input);
case 0xD00: case 0xD00:
return new Rlf(input); //rlf();
break;
case 0xC00: case 0xC00:
return new Rrf(input); //rrf();
break;
case 0x200: case 0x200:
return new Subwf(input); //subwf();
break;
case 0xE00: case 0xE00:
return new Swapf(input); //swapf();
break;
case 0x600: case 0x600:
return new Xorwf(input); //xorwf();
break;
case 0x3900: case 0x3900:
return new Andlw(input); return new Andlw(input);
case 0x3800: case 0x3800:
@@ -51,25 +56,32 @@ public class CommandDecoder
case 0x100: case 0x100:
return new Clrw(); return new Clrw();
case 0x80: case 0x80:
return new Movwf(input); //movwf();
break;
} }
switch(input & 0x3C00) switch(input & 0x3C00)
{ {
case 0x1000: case 0x1000:
return new Bcf(input); //bcf();
break;
case 0x1400: case 0x1400:
return new Bsf(input); //bsf();
break;
case 0x1800: case 0x1800:
return new Btfsc(input); //btfsc();
break;
case 0x1C00: case 0x1C00:
return new Btfss(input); //btfss();
break;
} }
switch(input & 0x3E00) switch(input & 0x3E00)
{ {
case 0x3E00: case 0x3E00:
//addlw();
return new Addlw(input); return new Addlw(input);
//break;
case 0x3C00: case 0x3C00:
return new Sublw(input); return new Sublw(input);
} }

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@@ -1,52 +0,0 @@
package de.darkress.pic16f84sim.gui;
import javax.swing.*;
import java.awt.*;
import java.awt.geom.Dimension2D;
public class SramTable
{
private final int rows = 32;
private final int columns = 8;
private Object[][] data = new Object[rows][columns];
public JTable getTable()
{
return table;
}
private JTable table = new JTable(data, createColumns());
public SramTable()
{
int count = 0;
for (int i = 0; i < rows; i++) {
for (int j = 0; j < columns; j++) {
data[i][j] = Integer.toHexString(count).toUpperCase();
table.getColumnModel().getColumn(j).setPreferredWidth(30);
count++;
}
}
}
private Object[] createColumns(){
Object[] columnNames = new Object[columns];
for (int j = 0; j < columns; j++) {
columnNames[j] = j;
}
return columnNames;
}
public void table() {
// Create a scroll pane and add the table to it
JScrollPane scrollPane = new JScrollPane(table);
// Create a panel and add the scroll pane to it
JPanel panel = new JPanel();
panel.add(scrollPane);
// Create a frame and add the panel to it
}
}

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@@ -153,13 +153,9 @@ public class Memory
memory[0x03] &= 0xFD; memory[0x03] &= 0xFD;
} }
public static int getCarryBit() public static boolean getCarryBit()
{ {
if((memory[0x03] & 0x01) == 0x01) return (memory[0x03] & 0x01) == 0x01;
{
return 1;
}
else return 0;
} }
public static void setCarryBit() public static void setCarryBit()