Fixed S register addressing (many things now working!), tweaked display (mouse displays correctly in lowres mode). Added support for committing disk changes back to disk images (done automatically when switching disks or exiting). Repaired BravoX image.

Contralto/AltoSystem.cs

@@ -28,6 +28,8 @@ namespace Contralto
             _mouse = new Mouse();
             _ethernetController = new EthernetController(this);
 
+
+
             _cpu = new AltoCPU(this);
 
             // Attach memory-mapped devices to the bus
@@ -177,7 +179,7 @@ namespace Contralto
 
         private AltoCPU _cpu;
         private MemoryBus _memBus;
-        private Contralto.Memory.Memory _mem;
+        private Memory.Memory _mem;
         private Keyboard _keyboard;
         private Mouse _mouse;
         private DiskController _diskController;