diff --git a/main.cpp b/main.cpp
index 73cd60a..926e55e 100644
--- a/main.cpp
+++ b/main.cpp
@@ -131,6 +131,9 @@ int run_cpu_validation(console *const cnsl, const std::string & filename)
 			for(int i=0; i<4; i++)
 				c->set_stackpointer(i, get_register_value(before, format("stack-%d", i)));
 
+			b->getMMU()->setMMR1(get_register_value(before, "mmr1"));
+			b->getMMU()->setMMR2(get_register_value(before, "mmr2"));
+
 			// registers
 			for(int set=0; set<2; set++) {
 				for(int i=0; i<6; i++)
@@ -170,6 +173,9 @@ int run_cpu_validation(console *const cnsl, const std::string & filename)
 			for(int i=0; i<4; i++)
 				cur_n_errors += !compare_values(cnsl, c->get_stackpointer(i), get_register_value(after, format("stack-%d", i)), format("Stack pointer %d", i));
 
+			cur_n_errors += !compare_values(cnsl, b->getMMU()->getMMR1(), get_register_value(after, "mmr1"), "MMR1");
+			cur_n_errors += !compare_values(cnsl, b->getMMU()->getMMR2(), get_register_value(after, "mmr2"), "MMR2");
+
 			for(int set=0; set<2; set++) {
 				for(int i=0; i<6; i++)
 					cur_n_errors += !compare_values(cnsl, c->lowlevel_register_get(set, i), get_register_value(after, format("reg-%d.%d", i, set)), format("Register %d", i));
diff --git a/mmu.cpp b/mmu.cpp
index d34a345..b3766f0 100644
--- a/mmu.cpp
+++ b/mmu.cpp
@@ -126,6 +126,11 @@ void mmu::clearMMR0Bit(const int bit)
 	MMR0 &= ~(1 << bit);
 }
 
+void mmu::setMMR1(const uint16_t value) 
+{
+	MMR1 = value;
+}
+
 void mmu::setMMR2(const uint16_t value) 
 {
 	MMR2 = value;