diff --git a/mmu.cpp b/mmu.cpp
index 17abfe5..dddacca 100644
--- a/mmu.cpp
+++ b/mmu.cpp
@@ -53,8 +53,6 @@ void mmu::setMMR0(uint16_t value)
 			value &= 254;  // bits 7...1 are protected 
 	}
 
-// TODO if bit 15/14/13 are set (either of them), then do not modify bit 1...7
-
 	MMR0 = value;
 }
 
@@ -103,17 +101,6 @@ void mmu::addToMMR1(const int8_t delta, const uint8_t reg)
 
 	assert((getMMR0() & 0160000) == 0);  // MMR1 should not be locked
 
-#if defined(ESP32)
-//	if (MMR1 > 255)
-//		esp_backtrace_print(32);
-#else
-	if (MMR1 > 255) {
-		extern FILE *lfh;
-		fflush(lfh);
-	}
-	assert(MMR1 < 256);
-#endif
-
 	MMR1 <<= 8;
 
 	MMR1 |= (delta & 31) << 3;