diff --git a/src/run/parse/load8/transfer.rs b/src/run/parse/load8/transfer.rs
index c8f2abc..24d2bf5 100644
--- a/src/run/parse/load8/transfer.rs
+++ b/src/run/parse/load8/transfer.rs
@@ -1,265 +1,87 @@
 use crate::register;
-use crate::run::parse::Error;
 use crate::run::{
     instructions::RunnableInstruction,
-    parse::{self, OpcodeParser, ParseResult},
+    parse::{self, Error, OpcodeParser, ParseResult},
 };
 
 pub struct Between8BitRegisterParser;
 
+macro_rules! match_opcode {
+    {$candidate_opcode: expr, $data: expr, $(($opcode: expr => dst=$dst: expr, src=$src: expr))+} => {
+        match $candidate_opcode {
+            $(
+                $opcode => Ok(RunnableInstruction::make_ldr1r2_data(
+                        $dst,
+                        $src,
+                        $data
+                )),
+            )+
+            _ => Err(Error::UnknownOpcode($candidate_opcode))
+        }
+    };
+}
+
 impl OpcodeParser for Between8BitRegisterParser {
     #[allow(clippy::too_many_lines)]
     fn parse_opcode(data: &[u8]) -> ParseResult {
         let opcode = parse::get_opcode_from_data(data)?;
-        match opcode {
-            0x7F => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::A,
-                register::Single::A,
-                data,
-            )),
-            0x78 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::A,
-                register::Single::B,
-                data,
-            )),
-            0x79 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::A,
-                register::Single::C,
-                data,
-            )),
-            0x7A => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::A,
-                register::Single::D,
-                data,
-            )),
-            0x7B => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::A,
-                register::Single::E,
-                data,
-            )),
-            0x7C => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::A,
-                register::Single::H,
-                data,
-            )),
-            0x7D => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::A,
-                register::Single::L,
-                data,
-            )),
+        match_opcode!(
+            opcode, data,
+            (0x7f => dst=register::Single::A, src=register::Single::A)
+            (0x78 => dst=register::Single::A, src=register::Single::B)
+            (0x79 => dst=register::Single::A, src=register::Single::C)
+            (0x7A => dst=register::Single::A, src=register::Single::D)
+            (0x7B => dst=register::Single::A, src=register::Single::E)
+            (0x7C => dst=register::Single::A, src=register::Single::H)
+            (0x7D => dst=register::Single::A, src=register::Single::L)
 
-            0x47 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::B,
-                register::Single::A,
-                data,
-            )),
-            0x40 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::B,
-                register::Single::B,
-                data,
-            )),
-            0x41 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::B,
-                register::Single::C,
-                data,
-            )),
-            0x42 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::B,
-                register::Single::D,
-                data,
-            )),
-            0x43 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::B,
-                register::Single::E,
-                data,
-            )),
-            0x44 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::B,
-                register::Single::H,
-                data,
-            )),
-            0x45 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::B,
-                register::Single::L,
-                data,
-            )),
-            0x4F => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::C,
-                register::Single::A,
-                data,
-            )),
-            0x48 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::C,
-                register::Single::B,
-                data,
-            )),
-            0x49 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::C,
-                register::Single::C,
-                data,
-            )),
-            0x4A => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::C,
-                register::Single::D,
-                data,
-            )),
-            0x4B => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::C,
-                register::Single::E,
-                data,
-            )),
-            0x4C => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::C,
-                register::Single::H,
-                data,
-            )),
-            0x4D => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::C,
-                register::Single::L,
-                data,
-            )),
-            0x57 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::D,
-                register::Single::A,
-                data,
-            )),
-            0x50 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::D,
-                register::Single::B,
-                data,
-            )),
-            0x51 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::D,
-                register::Single::C,
-                data,
-            )),
-            0x52 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::D,
-                register::Single::D,
-                data,
-            )),
-            0x53 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::D,
-                register::Single::E,
-                data,
-            )),
-            0x54 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::D,
-                register::Single::H,
-                data,
-            )),
-            0x55 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::D,
-                register::Single::L,
-                data,
-            )),
-            0x5F => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::E,
-                register::Single::A,
-                data,
-            )),
-            0x58 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::E,
-                register::Single::B,
-                data,
-            )),
-            0x59 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::E,
-                register::Single::C,
-                data,
-            )),
-            0x5A => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::E,
-                register::Single::D,
-                data,
-            )),
-            0x5B => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::E,
-                register::Single::E,
-                data,
-            )),
-            0x5C => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::E,
-                register::Single::H,
-                data,
-            )),
-            0x5D => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::E,
-                register::Single::L,
-                data,
-            )),
-            0x67 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::H,
-                register::Single::A,
-                data,
-            )),
-            0x60 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::H,
-                register::Single::B,
-                data,
-            )),
-            0x61 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::H,
-                register::Single::C,
-                data,
-            )),
-            0x62 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::H,
-                register::Single::D,
-                data,
-            )),
-            0x63 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::H,
-                register::Single::E,
-                data,
-            )),
-            0x64 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::H,
-                register::Single::H,
-                data,
-            )),
-            0x65 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::H,
-                register::Single::L,
-                data,
-            )),
-            0x6F => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::L,
-                register::Single::A,
-                data,
-            )),
-            0x68 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::L,
-                register::Single::B,
-                data,
-            )),
-            0x69 => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::L,
-                register::Single::C,
-                data,
-            )),
-            0x6A => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::L,
-                register::Single::D,
-                data,
-            )),
-            0x6B => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::L,
-                register::Single::E,
-                data,
-            )),
-            0x6C => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::L,
-                register::Single::H,
-                data,
-            )),
-            0x6D => Ok(RunnableInstruction::make_ldr1r2_data(
-                register::Single::L,
-                register::Single::L,
-                data,
-            )),
+            (0x47 => dst=register::Single::B, src=register::Single::A)
+            (0x40 => dst=register::Single::B, src=register::Single::B)
+            (0x41 => dst=register::Single::B, src=register::Single::C)
+            (0x42 => dst=register::Single::B, src=register::Single::D)
+            (0x43 => dst=register::Single::B, src=register::Single::E)
+            (0x44 => dst=register::Single::B, src=register::Single::H)
+            (0x45 => dst=register::Single::B, src=register::Single::L)
 
-            _ => Err(Error::UnknownOpcode(opcode)),
-        }
+            (0x4F => dst=register::Single::C, src=register::Single::A)
+            (0x48 => dst=register::Single::C, src=register::Single::B)
+            (0x49 => dst=register::Single::C, src=register::Single::C)
+            (0x4A => dst=register::Single::C, src=register::Single::D)
+            (0x4B => dst=register::Single::C, src=register::Single::E)
+            (0x4C => dst=register::Single::C, src=register::Single::H)
+            (0x4D => dst=register::Single::C, src=register::Single::L)
+
+            (0x57 => dst=register::Single::D, src=register::Single::A)
+            (0x50 => dst=register::Single::D, src=register::Single::B)
+            (0x51 => dst=register::Single::D, src=register::Single::C)
+            (0x52 => dst=register::Single::D, src=register::Single::D)
+            (0x53 => dst=register::Single::D, src=register::Single::E)
+            (0x54 => dst=register::Single::D, src=register::Single::H)
+            (0x55 => dst=register::Single::D, src=register::Single::L)
+
+            (0x5F => dst=register::Single::E, src=register::Single::A)
+            (0x58 => dst=register::Single::E, src=register::Single::B)
+            (0x59 => dst=register::Single::E, src=register::Single::C)
+            (0x5A => dst=register::Single::E, src=register::Single::D)
+            (0x5B => dst=register::Single::E, src=register::Single::E)
+            (0x5C => dst=register::Single::E, src=register::Single::H)
+            (0x5D => dst=register::Single::E, src=register::Single::L)
+
+            (0x67 => dst=register::Single::H, src=register::Single::A)
+            (0x60 => dst=register::Single::H, src=register::Single::B)
+            (0x61 => dst=register::Single::H, src=register::Single::C)
+            (0x62 => dst=register::Single::H, src=register::Single::D)
+            (0x63 => dst=register::Single::H, src=register::Single::E)
+            (0x64 => dst=register::Single::H, src=register::Single::H)
+            (0x65 => dst=register::Single::H, src=register::Single::L)
+
+            (0x6F => dst=register::Single::L, src=register::Single::A)
+            (0x68 => dst=register::Single::L, src=register::Single::B)
+            (0x69 => dst=register::Single::L, src=register::Single::C)
+            (0x6A => dst=register::Single::L, src=register::Single::D)
+            (0x6B => dst=register::Single::L, src=register::Single::E)
+            (0x6c => dst=register::Single::L, src=register::Single::H)
+            (0x6D => dst=register::Single::L, src=register::Single::L)
+        )
     }
 }