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4 Commits

Author SHA1 Message Date
Darkress
2f8adb70c4 implemented Rlf Instruction 2023-06-06 01:09:16 +02:00
darkress
40b7a4a478 implemented Movwf instruction (#19)
Co-authored-by: Darkress <30271678+DarkressX@users.noreply.github.com>
Reviewed-on: darkress/pic16f84-sim#19
2023-06-06 00:00:58 +02:00
darkress
a5e3039667 implemented Movf Instruction (#18)
Co-authored-by: Darkress <30271678+DarkressX@users.noreply.github.com>
Reviewed-on: darkress/pic16f84-sim#18
2023-06-04 20:42:21 +02:00
darkress
537b4559c4 implemented Iorwf Instruction (#17)
Co-authored-by: Darkress <30271678+DarkressX@users.noreply.github.com>
Reviewed-on: darkress/pic16f84-sim#17
2023-06-03 23:29:27 +02:00
7 changed files with 128 additions and 12 deletions

View File

@@ -12,8 +12,9 @@ class Main
public static void main(String[] args) {
ArrayList<Command> program = new ArrayList<>();
Memory.setRegister(0x14, 0xFF);
program.add(CommandDecoder.decode(0x0194));
Memory.clearCarryBit();
Memory.setRegister(0x14, 0B11110000); //240 << 224
program.add(CommandDecoder.decode(0x0D94));
for(int i = 0; i < program.size(); i++)
{
program.get(ProgramCounter.getPc()).execute();

View File

@@ -0,0 +1,27 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Iorwf extends FileRegisterCommandUtils implements Command
{
private final int address;
private final boolean destinationBit;
public Iorwf(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

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

View File

@@ -0,0 +1,25 @@
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();
}
}

View File

@@ -0,0 +1,36 @@
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 carry = Memory.getCarryBit();
int tmp = carry;
carry = register >>7;
register = ((register <<1) + tmp) & 0xFF;
if(carry == 1)
{
Memory.setCarryBit();
} else if(carry == 0){
Memory.clearCarryBit();
}
writeToDestination(destinationBit, address, register);
ProgramCounter.incPC();
}
}

View File

@@ -23,14 +23,11 @@ public class CommandDecoder
case 0xF00:
return new Incfsz(input);
case 0x400:
//iorwf();
break;
return new Iorwf(input);
case 0x800:
//movf();
break;
return new Movf(input);
case 0xD00:
//rlf();
break;
return new Rlf(input);
case 0xC00:
//rrf();
break;
@@ -58,8 +55,7 @@ public class CommandDecoder
case 0x100:
return new Clrw();
case 0x80:
//movwf();
break;
return new Movwf(input);
}
switch(input & 0x3C00)

View File

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