created sicxe emulator project

simulator_SIC_XE/src/input_device.cpp

@@ -0,0 +1,20 @@
+#include "input_device.h"
+
+InputDevice::InputDevice(std::istream &in)
+    : inStream(in)
+{
+}
+
+InputDevice::~InputDevice()
+{
+}
+
+unsigned char InputDevice::read()
+{
+    char c;
+    if (!inStream.get(c)) {
+        // If stream is at EOF or error, return 0
+        return 0;
+    }
+    return static_cast<unsigned char>(c);
+}