diff --git a/docs/references/Guide To Writing Your First Emulator.txt b/docs/references/Guide To Writing Your First Emulator.txt
new file mode 100644
index 0000000..de1506a
--- /dev/null
+++ b/docs/references/Guide To Writing Your First Emulator.txt	
@@ -0,0 +1 @@
+https://literaleval.hashnode.dev/guide-to-writing-your-first-emulator-chip-8
\ No newline at end of file
diff --git a/src/chip8.v b/src/chip8.v
index 0733e5a..20f13f7 100644
--- a/src/chip8.v
+++ b/src/chip8.v
@@ -1,6 +1,7 @@
 
 
 import rand
+import readline
 
 const font := [
 	[u8(0xF0), u8(0x90), u8(0x90), u8(0x90), u8(0xF0)],  // 0
@@ -21,6 +22,37 @@ const font := [
 	[u8(0xF0), u8(0x80), u8(0xF0), u8(0x80), u8(0x80)],	//	F
 ]
 
+const keyboard := {
+	0x1  : 0x1
+	0x2  : 0x2
+	0x3  : 0x3
+	0x4  : 0x4
+	0x71 : 
+	0x51 :
+	0x77 :
+	0x57 :
+	0x45 :
+	0x65 :
+	0x72 :
+	0x52 :
+	0x41 :
+	0x61 :
+	0x73 :
+	0x53 :
+	0x64 :
+	0x44 :
+	0x46 :
+	0x66 :
+	0x7a :
+	0x5a :
+	0x58 :
+	0x78 :
+	0x43 :
+	0x63 :
+	0x56 :
+	0x76 :
+}
+
 struct Screen{
 	pub:	
 		display_width    int = 64	
@@ -42,6 +74,7 @@ struct Chip8{
 		i  u16
 		stack Stack
 		delay_timer u8
+		sount_timer u8
 		is_draw     bool
 }
 
@@ -345,48 +378,52 @@ fn (mut chip Chip8) decode_and_run(instruction u16) {
 		//	}
 		//},
 //
-		//0xF000 {
-		//	x = (opcode & 0x0F00) >> 8
-		//	s_opcode = opcode & 0x00FF
-//
-		//	match s_opcode {
-		//		0x07{
-//
-		//		},
-//
-		//		0x0A{
-//
-		//		},
-//
-		//		0x15{
-//
-		//		},
-//
-		//		0x18{
-//
-		//		},
-//
-		//		0x1E{
-		//			chip.i += chip.v[x]
-		//		},
-//
-		//		0x29{
-//
-		//		},
-//
-		//		0x33{
-//
-		//		},
-//
-		//		0x55{
-//
-		//		},
-//
-		//		0x65{
-//
-		//		},
-		//	}
-		//},
+		0xF000 {
+			x = (opcode & 0x0F00) >> 8
+			s_opcode = opcode & 0x00FF
+
+			match s_opcode {
+				0x07{
+					chip.v[x] = chip.delay_timer
+				}
+
+				0x0A{
+
+				}
+
+				0x15{
+					chip.delay_timer = chip.v[x]
+				}
+
+				0x18{
+					chip.sound_timer = chip.v[x]
+				}
+
+				0x1E{
+					chip.i += chip.v[x]
+				}
+
+				0x29{
+
+				}
+
+				0x33{
+
+				}
+
+				0x55{
+
+				}
+
+				0x65{
+
+				}
+
+				else {
+					panic('Invalid instruction! 0x${instruction.hex()}')
+				}
+			}
+		}
 
 		else {
 			panic('Invalid instruction! 0x${instruction.hex()}')
@@ -395,3 +432,31 @@ fn (mut chip Chip8) decode_and_run(instruction u16) {
 	if !is_jump { chip.pc += 2 }
 }
 
+fn get_key()
+{
+	mut r := readline.Readline{}
+	key := r.read_char() or { panic(err) }
+
+	match key {
+		0x1 {
+
+		}
+
+		0x2 {
+
+		}
+
+		0x3 {
+
+		}
+
+		0x4 {
+
+		}
+
+		0x1 {
+
+		}
+
+	}
+}
\ No newline at end of file