diff --git a/Machines/Acorn/Archimedes/Archimedes.cpp b/Machines/Acorn/Archimedes/Archimedes.cpp
index b8c73dce6..8076290d9 100644
--- a/Machines/Acorn/Archimedes/Archimedes.cpp
+++ b/Machines/Acorn/Archimedes/Archimedes.cpp
@@ -745,8 +745,9 @@ struct Memory {
 			} break;
 
 			case Zone::LowROM:
-				logger.error().append("TODO: Low ROM read from %08x", address);
-			break;
+//				logger.error().append("TODO: Low ROM read from %08x", address);
+				source = ~0;
+			return true;
 
 			case Zone::HighROM:
 				// Real test is: require A24=A25=0, then A25=1.