Add: PUT instruction, Assembler separation

cpu.h

@@ -0,0 +1,60 @@
+#ifndef CPU_H
+#define CPU_H
+
+#define MEM_SIZE	256
+#define NUM_REGISTERS	4
+#define BUF_MAX     256
+
+/*
+ * Instruction set
+ * Here, we're making a RISC (reduced instruction set computer)
+ * so we're staying minimalistic.
+*/
+
+typedef enum
+{
+	// 0x00 -> No operation
+	NOP 	= 0,
+
+	// 0xA? -> Memory operations
+	MOV 	= 0xA0,
+	PUT		= 0xA1,
+
+	// 0xB? -> Arithmetic operations
+	ADD 	= 0xB0,
+	SUB 	= 0xB1,
+
+	// 0xC? -> Bitwise operations
+	OR	= 0xC0,
+	AND	= 0xC1,
+	XOR	= 0xC2,
+
+	// 0xD? -> Input/output operations
+	OUT	= 0xD0,
+	IN	= 0xD1,
+
+	// 0xE? -> Jump and comparisons
+	JMP 	= 0xE0,
+	JEQ 	= 0xE1,
+	CMP 	= 0xE2,
+	
+	// 0xF? -> Misc operations
+	HLT 	= 0xFF
+} instruction_set_t;
+
+/*
+ * CPU structure definition
+ * Contains 4 8-bit registers, memory, a program counter, a halt switch, and flags.
+*/
+
+typedef struct
+{
+	uint8_t reg[NUM_REGISTERS];
+	uint8_t memory[MEM_SIZE];
+	uint16_t pc;
+	bool halted;
+	bool equal_flag;
+	int flag_clear_delay;
+} CPU_t;
+
+#endif