ram, instr reel, runtime, etc

src/spider/runtime/cpu/InstrReel.hpp

@@ -0,0 +1,59 @@
+#pragma once
+
+#include <spider/SpiderRuntime.hpp>
+
+namespace spider {
+
+    /**
+     * Implements an instruction reel.
+     */
+    class InstrReel {
+    private:
+
+    public:
+
+        InstrReel();
+
+        ~InstrReel();
+
+    public:
+
+    
+
+    public:
+
+        /**
+         * Returns the two-byte instruction at the
+         * specific byte location.
+         */
+        u16 instrAt(u64 ip) const;
+
+        /**
+         * Obtains a byte of data at
+         * the specific location.
+         */
+        u8 dataAt(u64 ip) const;
+
+    public:
+
+        /**
+         * Fetches the data, and then
+         * feeds the instruction into the
+         * CPU.
+         * 
+         * Returns how many steps it should
+         * move after.
+         */
+        u8 feedNext(CPU& cpu);
+
+    public: // Static Utils //
+
+        static u16 unpackInstr(u16 bcode);
+
+        static u8 unpackAddrMode(u16 bcode);
+
+        static u8 unpackTypeSize(u16 bcode);
+
+    };
+
+}