From d0c10cd4af4dccef58183af925c431b1f520c5c7 Mon Sep 17 00:00:00 2001
From: Ariejan de Vroom <ariejan@ariejan.net>
Date: Wed, 20 Aug 2014 07:22:34 +0200
Subject: [PATCH] Add CpuType to differentiate between models/variants

---
 cpu.go | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/cpu.go b/cpu.go
index d197e54..6091404 100644
--- a/cpu.go
+++ b/cpu.go
@@ -22,8 +22,15 @@ type Cpu struct {
 	SP byte   // Stack Pointer
 
 	Bus *AddressBus // The address bus
+
+	CpuType int // Which type of CPU is begin emulated
 }
 
+const (
+	Cpu6502  = iota // The original MOS 6502, no bugs
+	Cpu65C02        // The WDC 65C02 version
+)
+
 const (
 	ZeropageBase = 0x0000 // 0x0000-00FF Reserved for zeropage instructions
 	StackBase    = 0x0100 // 0x0100-01FF Reserved for stack
@@ -35,7 +42,7 @@ const (
 
 // Create an new Cpu, using the AddressBus for accessing memory.
 func NewCpu(bus *AddressBus) (*Cpu, error) {
-	return &Cpu{Bus: bus}, nil
+	return &Cpu{Bus: bus, CpuType: Cpu6502}, nil
 }
 
 // Returns a string containing the current state of the CPU.