emma now has ability to decode an instruction and to display video and system memory

chip8_core/src/parts/CPU.rs

@@ -9,21 +9,20 @@ impl Chip8Registers {
     }
 }
 
-
 pub struct Chip8InstructionParameter {
-    mask: u16
+   pub mask: u16
 }
 
-struct Chip8Instruction {
-    id: String,
-    mask: u16,
-    pattern: u16,
-    arguments: Vec<Chip8InstructionParameter>,
-    description: Box<str>
+pub struct Chip8Instruction {
+    pub id: String,
+    pub mask: u16,
+    pub pattern: u16,
+    pub arguments: Vec<Chip8InstructionParameter>,
+    pub description: Box<str>
 }
 
-pub fn fill_chip8_instructions() {
-    let full_instruction_set = vec![
+pub fn fill_chip8_instructions() -> [Chip8Instruction; 34] {
+    [
         Chip8Instruction {
             id: "SYS".to_string(),
             mask: 0x00,
@@ -128,7 +127,7 @@ pub fn fill_chip8_instructions() {
                     mask: 0x00ff
                 }
             ],
-            description: "TBD".into()
+            description: "Add value in register 0x0f00 with value 0x00ff".into()
         },
         Chip8Instruction {
             id: "CPY".to_string(),
@@ -142,7 +141,7 @@ pub fn fill_chip8_instructions() {
                     mask: 0x00f0
                 }
             ],
-            description: "TBD".into()
+            description: "Copy value between Register X and Y".into()
         },
         Chip8Instruction {
             id: "OR".to_string(),
@@ -366,7 +365,7 @@ pub fn fill_chip8_instructions() {
                     mask: 0x0f00
                 }
             ],
-            description: "TBD".into()
+            description: "Wait for a Key to be pressed".into()
         },
         Chip8Instruction {
             id: "LDT".to_string(),
@@ -377,7 +376,7 @@ pub fn fill_chip8_instructions() {
                     mask: 0x0f00
                 }
             ],
-            description: "TBD".into()
+            description: "Load Data Timer".into()
         },
         Chip8Instruction {
             id: "LST".to_string(),
@@ -388,7 +387,7 @@ pub fn fill_chip8_instructions() {
                     mask: 0x0f00
                 }
             ],
-            description: "TBD".into()
+            description: "Load Sound Timer".into()
         },
         Chip8Instruction {
             id: "ADDI".to_string(),
@@ -399,7 +398,7 @@ pub fn fill_chip8_instructions() {
                     mask: 0x0f00
                 }
             ],
-            description: "TBD".into()
+            description: "Add register with value at I".into()
         },
         Chip8Instruction {
             id: "SETI".to_string(),
@@ -432,7 +431,7 @@ pub fn fill_chip8_instructions() {
                     mask: 0x0f00
                 }
             ],
-            description: "TBD".into()
+            description: "Store value in register X at offset I".into()
         },
         Chip8Instruction {
             id: "MLOAD".to_string(),
@@ -443,7 +442,20 @@ pub fn fill_chip8_instructions() {
                     mask: 0x0f00
                 }
             ],
-            description: "TBD".into()
+            description: "Load value into register X at offset I".into()
         }
-    ];
+    ]
+}
+
+
+struct Chip8System {
+
+}
+
+impl Chip8System {
+    
+}
+
+trait CpuInstruction {
+    fn execute(input: Chip8System) -> Chip8System;
 }

chip8_core/src/parts/Display.rs

@@ -7,7 +7,6 @@ pub struct Chip8Display {
 impl Chip8Display {
     pub fn tick(self: &Self) {
         println!("Ticking the display");
-
     }
 
     pub fn render_chip8_display(to_render: Chip8Display) {