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Author SHA1 Message Date
Darkress
eda63f0073 implemented subwf Instruction 2023-06-06 07:34:26 +02:00
15 changed files with 20 additions and 193 deletions

View File

@@ -13,8 +13,8 @@ class Main
ArrayList<Command> program = new ArrayList<>();
Memory.workingRegister = 0x01;
Memory.setRegister(0x14, 0xA7); //240 << 224
program.add(CommandDecoder.decode(0x1C94));
Memory.setRegister(0x14, 0x01); //240 << 224
program.add(CommandDecoder.decode(0x0294));
for(int i = 0; i < program.size(); i++)
{
program.get(ProgramCounter.getPc()).execute();

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@@ -1,7 +1,6 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Andlw extends LiteralCommandUtils implements Command
{
@@ -19,6 +18,5 @@ public class Andlw extends LiteralCommandUtils implements Command
checkZeroBit(result);
Memory.workingRegister = result % 256;
ProgramCounter.incPC();
}
}

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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();
}
}

View File

@@ -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();
}
}

View File

@@ -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

@@ -25,7 +25,8 @@ public class Decfsz extends FileRegisterCommandUtils implements Command
if((result % 256) == 0)
{
ProgramCounter.incPC();
Nop nop = new Nop();
nop.execute();
}
ProgramCounter.incPC();
}

View File

@@ -25,7 +25,8 @@ public class Incfsz extends FileRegisterCommandUtils implements Command
if((result % 256) == 0)
{
ProgramCounter.incPC();
Nop nop = new Nop();
nop.execute();
}
ProgramCounter.incPC();
}

View File

@@ -1,7 +1,6 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Iorlw extends LiteralCommandUtils implements Command
{
@@ -19,6 +18,5 @@ public class Iorlw extends LiteralCommandUtils implements Command
checkZeroBit(result);
Memory.workingRegister = result % 256;
ProgramCounter.incPC();
}
}

View File

@@ -1,7 +1,6 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Sublw extends LiteralCommandUtils implements Command
{
@@ -42,6 +41,5 @@ public class Sublw extends LiteralCommandUtils implements Command
checkDigitCarryBit(literal);
Memory.workingRegister = 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();
}
}

View File

@@ -1,7 +1,6 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Xorlw extends LiteralCommandUtils implements Command
{
@@ -19,6 +18,5 @@ public class Xorlw extends LiteralCommandUtils implements Command
checkZeroBit(result);
Memory.workingRegister = result % 256;
ProgramCounter.incPC();
}
}

View File

@@ -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();
}
}

View File

@@ -33,9 +33,11 @@ public class CommandDecoder
case 0x200:
return new Subwf(input);
case 0xE00:
return new Swapf(input);
//swapf();
break;
case 0x600:
return new Xorwf(input);
//xorwf();
break;
case 0x3900:
return new Andlw(input);
case 0x3800:
@@ -57,19 +59,25 @@ public class CommandDecoder
switch(input & 0x3C00)
{
case 0x1000:
return new Bcf(input);
//bcf();
break;
case 0x1400:
return new Bsf(input);
//bsf();
break;
case 0x1800:
return new Btfsc(input);
//btfsc();
break;
case 0x1C00:
return new Btfss(input);
//btfss();
break;
}
switch(input & 0x3E00)
{
case 0x3E00:
//addlw();
return new Addlw(input);
//break;
case 0x3C00:
return new Sublw(input);
}