Start opcode tedium

IsaacMarovitz · Nov 14, 2023 · 38fb16b · 38fb16b
1 parent 4e07010
commit 38fb16b
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Showing 2 changed files with 45 additions and 11 deletions.
diff --git a/src/cpu.rs b/src/cpu.rs
@@ -11,4 +11,34 @@ impl CPU {
             reg: Registers::new(mode)
         }
     }
+
+    pub fn call(&mut self, opcode: u8) {
+        match opcode {
+            0x06 => self.reg.b = 0,
+            0x0e => self.reg.c = 0,
+            0x16 => self.reg.d = 0,
+            0x1e => self.reg.e = 0,
+            0x26 => self.reg.h = 0,
+            0x2e => self.reg.l = 0,
+            0x36 => {},
+            0x3e => {},
+            0x02 => {},
+            0x12 => {},
+            0x0a => {},
+            0x1a => {},
+            0x22 => {},
+            0x32 => {},
+            0x2a => {},
+            0x3a => {},
+            0x40 => {},
+            0x41 => self.reg.b = self.reg.c,
+            0x42 => self.reg.b = self.reg.d,
+            0x43 => self.reg.b = self.reg.e,
+            0x44 => self.reg.b = self.reg.h,
+            0x45 => self.reg.b = self.reg.l,
+            0x46 => {},
+            0x47 => self.reg.b = self.reg.a,
+            _ => {},
+        }
+    }
 }
diff --git a/src/registers.rs b/src/registers.rs
@@ -2,24 +2,28 @@ use bitflags::{bitflags};
 use crate::mode::GBMode;
 
 pub struct Registers {
-    a: u8,
+    pub a: u8,
     f: Flags,
-    b: u8,
-    c: u8,
-    d: u8,
-    e: u8,
-    h: u8,
-    l: u8,
+    pub b: u8,
+    pub c: u8,
+    pub d: u8,
+    pub e: u8,
+    pub h: u8,
+    pub l: u8,
     pc: u16,
     sp: u16,
 }
 
 bitflags! {
     pub struct Flags: u8 {
-        const C = 0b00010000;
-        const H = 0b00100000;
-        const N = 0b01000000;
-        const Z = 0b10000000;
+        // Carry Flag
+        const C = 0b0001_0000;
+        // Half-Carry Flag
+        const H = 0b0010_0000;
+        // Subtract Flag
+        const N = 0b0100_0000;
+        // Zero Flag
+        const Z = 0b1000_0000;
     }
 }