I couldn't find these switch settings documented anywhere. Here are
the switch settings as I experimentally determined them after updating
my M8189 to KDF11B-BH ROM V1.0 (23-380E4 / 23-381E4) firmware:
M8189 KDF11B-BH ROM V1.0 (23-380E4 / 23-381E4) Boot Switches S1
Short Memory Test S1-7 off
Long Memory Test S1-7 ON
Plain terminal S1-8 off
ANSI terminal S1-8 ON
Boot Switches S1
+-----+-----+-----+-----+-----+
| 1 | 2 | 3 | 4 | 5 |
+-----+-----+-----+-----+-----+
+-----+-----+-----+-----+-----+
Auto boot DU0 | off | off | off | ON | off |
+-----+-----+-----+-----+-----+
Auto boot DU1 | ON | off | off | ON | off |
+-----+-----+-----+-----+-----+
Auto boot DU2 | off | ON | off | ON | off |
+-----+-----+-----+-----+-----+
Auto boot DU3 | ON | ON | off | ON | off |
+-----+-----+-----+-----+-----+
Auto boot DU4 | off | off | ON | ON | off |
+-----+-----+-----+-----+-----+
Auto boot DU5 | ON | off | ON | ON | off |
+-----+-----+-----+-----+-----+
Auto boot DU6 | off | ON | ON | ON | off |
+-----+-----+-----+-----+-----+
+-----+-----+-----+-----+-----+
Auto boot DL0 | off | off | off | off | ON |
+-----+-----+-----+-----+-----+
Auto boot DL1 | ON | off | off | off | ON |
+-----+-----+-----+-----+-----+
Auto boot DL2 | off | ON | off | off | ON |
+-----+-----+-----+-----+-----+
Auto boot DL3 | ON | ON | off | off | ON |
+-----+-----+-----+-----+-----+
+-----+-----+-----+-----+-----+
Auto boot DX0 | off | off | ON | off | off |
+-----+-----+-----+-----+-----+
Auto boot DX1 | ON | off | ON | off | off |
+-----+-----+-----+-----+-----+
+-----+-----+-----+-----+-----+
Auto boot DY0 | off | ON | ON | off | off |
+-----+-----+-----+-----+-----+
Auto boot DY1 | ON | ON | ON | off | off |
+-----+-----+-----+-----+-----+
+-----+-----+-----+-----+-----+
Auto boot DD0 | off | ON | off | off | off |
+-----+-----+-----+-----+-----+
Auto boot DD1 | ON | ON | off | off | off |
+-----+-----+-----+-----+-----+
+-----+-----+-----+-----+-----+
Auto boot XH0 | off | off | ON | off | ON |
+-----+-----+-----+-----+-----+
Auto boot XH1 | ON | off | ON | off | ON |
+-----+-----+-----+-----+-----+
+-----+-----+-----+-----+-----+
Auto boot MS0 | ON | off | off | off | off |
+-----+-----+-----+-----+-----+
+-----+-----+-----+-----+-----+
Auto boot MU0 | off | off | off | ON | ON |
+-----+-----+-----+-----+-----+
(Auto boot DU7 is missing from this list. I couldn't seem to get that
setting to work)