LIST command is now more foolproof

STATUS.md

@@ -22,6 +22,7 @@ Here are the features of the Open ROMs not found in the original ROMs from the 8
     * start/end addresses are displayed, in the Final cartridge style
     * command with just the file name tries to use the last device if it's number seems sane; otherwise uses 8
     * command without parameters tries to load first file from drive chosen as above
+* `LIST` command should never damage the screen if trying to list memory content which is not a BASIC program
 
 * uses RAM under ROM and I/O: 51199 bytes free (up to `$CFFF`) by default, but 61438 is also possible
 * cold/warm start silences multiple SID chips