2 files changed, 5 insertions, 0 deletions
diff --git a/qtmips_machine/memory.cpp b/qtmips_machine/memory.cpp
index fd1dbb4..3d711cc 100644
--- a/qtmips_machine/memory.cpp
+++ b/qtmips_machine/memory.cpp
@@ -57,6 +57,8 @@ std::uint32_t MemoryAccess::read_word(std::uint32_t offset) {
 
 void MemoryAccess::write_ctl(enum MemoryAccess::AccessControl ctl, std::uint32_t offset, std::uint32_t value) {
     switch (ctl) {
+    case AC_NONE:
+        break;
     case AC_BYTE:
     case AC_BYTE_UNSIGNED:
         this->write_byte(offset, value);
@@ -75,6 +77,8 @@ void MemoryAccess::write_ctl(enum MemoryAccess::AccessControl ctl, std::uint32_t
 
 std::uint32_t MemoryAccess::read_ctl(enum MemoryAccess::AccessControl ctl, std::uint32_t offset) {
     switch (ctl) {
+    case AC_NONE:
+        return 0;
     case AC_BYTE:
         {
         std::uint8_t b = this->read_byte(offset);
diff --git a/qtmips_machine/memory.h b/qtmips_machine/memory.h
index 90fda1b..7b14855 100644
--- a/qtmips_machine/memory.h
+++ b/qtmips_machine/memory.h
@@ -19,6 +19,7 @@ public:
     std::uint32_t read_word(std::uint32_t offset);
 
     enum AccessControl {
+        AC_NONE,
         AC_BYTE,
         AC_HALFWORD,
         AC_WORD,