1 -      - P - +8.5V
 2 - RA1  - I - AFC Vref pin 10 Receiver pin7 TDA4210
 3 - RA2  - I - AFC Vout pin 11 Receiver 100k pin6 TDA4210
 4 - RC0  - O - A pin 10 CD4052
 5 - RC1  - O - B pin 9 CD4052
 6 - RC7  - O - /DX ( 22k to NPN base, shunt Vind from TDA1072A )
 7 -          - ARI ( pin 14 W403 )
 8 -          - ARI ( pin 13 W403 )
 9 - RB3  - O - SAA1057 Enable
10 - RA3  - I - MUTE ( collector V810 to GND )
11 - VSS  - P - GND
12 -          - Tape pin 18 ETL9311N Direction
13 -          - Tape pin 15 ETL9311N
14 -          - Tape pin 20 ETL9311N
15 - RA4  - I - Stereo ( collector V370 +8.5V via 3k9 )
16 - RB2  - O - LCD Enable
17 - RC6  - O - FM/!AM ( 22k to NPN base )
18 - RB1  - O - Data
19 - RB0  - O - Clk
20 -      - P - +5V pin 7 L498B

21 -          - NC
22 - RB4  - O - External Enable
23 -          - KBD (1)
24 -          - KBD (3)
25 -          - KBD (5)
26 -          - NC
27 -          - KBD (7)
28 -          - KBD (2)
29 -          - KBD (4)
30 -          - KBD (6)
31 -      - I - /Reset pin 5 L498B
32 - RB5  - I - Volume knob button ( to GND )
33 - VDD  - P - +5V pin 6 L498B
34 - XTAL
35 - XTAL
36
37
38 - RC2  - O - Beeper
39 -          - Tape pin 1 ETL9311N
40 - RA0  - I - RSSI Vind pin 9 TDA1072A + Vind pin 10 TDA4210