Memory controller implemented.

Source/Assembler/assembly.h

@@ -62,7 +62,11 @@
 #define VECTOR_BOOT          0
 #define VECTOR_SOFT_RESET    1
 #define VECTOR_INVALID_OPCODE 2
-// Vectors 3 to 15 are held back for faults that do not exist yet, so that each cause
+// A device refused a write, because it landed inside a raised fence.
+#define VECTOR_GUARD_VIOLATION 3
+// A bank was named that has nothing registered in it, or an access ran past its end.
+#define VECTOR_BANK_FAULT     4
+// Vectors 5 to 15 are held back for faults that do not exist yet, so that each cause
 // can have an entry of its own rather than sharing one and needing a cause register to
 // tell them apart. Everything from 16 up belongs to programs.
 #define VECTOR_FIRST_FREE    16

Source/Assembler/secondPass.c

@@ -144,9 +144,11 @@ static const struct {
     const char *name;
     uint8_t index;
 } reservedVectors[] = {
-    { "Boot",      VECTOR_BOOT },
-    { "SoftReset", VECTOR_SOFT_RESET },
-    { "BadOpcode", VECTOR_INVALID_OPCODE },
+    { "Boot",           VECTOR_BOOT },
+    { "SoftReset",      VECTOR_SOFT_RESET },
+    { "BadOpcode",      VECTOR_INVALID_OPCODE },
+    { "GuardViolation", VECTOR_GUARD_VIOLATION },
+    { "BankFault",      VECTOR_BANK_FAULT },
 };
 static const int reservedVectorCount = (int)(sizeof(reservedVectors) / sizeof(reservedVectors[0]));