From 40b7a4a478ea371bd853614eaee942b878feb0c1 Mon Sep 17 00:00:00 2001
From: darkress <30271678+darkressx@users.noreply.github.com>
Date: Tue, 6 Jun 2023 00:00:58 +0200
Subject: [PATCH] implemented Movwf instruction (#19)

Co-authored-by: Darkress <30271678+DarkressX@users.noreply.github.com>
Reviewed-on: https://git.darkress.xyz/darkress/pic16f84-sim/pulls/19
---
 de/darkress/pic16f84sim/Main.java             |  2 +-
 de/darkress/pic16f84sim/commands/Movwf.java   | 25 +++++++++++++++++++
 .../pic16f84sim/decoder/CommandDecoder.java   |  3 +--
 3 files changed, 27 insertions(+), 3 deletions(-)
 create mode 100644 de/darkress/pic16f84sim/commands/Movwf.java

diff --git a/de/darkress/pic16f84sim/Main.java b/de/darkress/pic16f84sim/Main.java
index 4265458..40a7528 100644
--- a/de/darkress/pic16f84sim/Main.java
+++ b/de/darkress/pic16f84sim/Main.java
@@ -14,7 +14,7 @@ class Main
         ArrayList<Command> program = new ArrayList<>();
         Memory.workingRegister = 0x1A;
         Memory.setRegister(0x14, 0x1B);
-        program.add(CommandDecoder.decode(0x0894));
+        program.add(CommandDecoder.decode(0x0094));
         for(int i = 0; i < program.size(); i++)
         {
             program.get(ProgramCounter.getPc()).execute();
diff --git a/de/darkress/pic16f84sim/commands/Movwf.java b/de/darkress/pic16f84sim/commands/Movwf.java
new file mode 100644
index 0000000..3b19b2b
--- /dev/null
+++ b/de/darkress/pic16f84sim/commands/Movwf.java
@@ -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();
+    }
+}
diff --git a/de/darkress/pic16f84sim/decoder/CommandDecoder.java b/de/darkress/pic16f84sim/decoder/CommandDecoder.java
index 751c86d..e13eaa0 100644
--- a/de/darkress/pic16f84sim/decoder/CommandDecoder.java
+++ b/de/darkress/pic16f84sim/decoder/CommandDecoder.java
@@ -56,8 +56,7 @@ public class CommandDecoder
             case 0x100:
                 return new Clrw();
             case 0x80:
-                //movwf();
-                break;
+                return new Movwf(input);
         }
 
         switch(input & 0x3C00)