HP 8112A Operating, Programming And Servicing Manual page 361

8. In Chapter 10.7 substitute Table B-3, Table B-4, and Table B-5
for Table 1 0. 7-3, Signatures for address drivers and decoders
Table B-3. Address bus Signature Analysis
Address Free Run Ul
Bus
AlO
A l l
A12
A13
A14
A15
Table B-4. Main Decoder Signature Analysis
Main
Free Run U12 U13 U14 U 9
Decoder S.A.
2340
1C66
ROM2 20UO
ROM3 4685
ROM4 36F8
ROMS 3 1AC
ROM6 41P4
S.A. Pin
uuuu
AO 9
Al FFFF 10 4
A2 8484 1 1 6
A3 P763 12 8
13 1 1 9
A4 1U5P
14 13 7
A5 0356
A6 U759 15 15 5
A7 6F9A 16 17 3
A8 7791 17
632 1 18
A9
37C5 19
6U28 20
22
4FCA
4868 23
9UP1 24
0002 25
Pin Pin Pin Pin Pin Pin Pin Pin
4
15
14 4
12 20
1 1
10
9
12
U3 U4
Pin Pin
18
2
16
14
12
2 18
4 16
6 14
8 12
1 1 9
13 7
15 5
17 3
us
U7 U6 U5 TP
20
20
20
20
Backdating B-27
2
3
4
5
6