40, 41 AD2, 3 I Input of AD
42 GND – GND
43-46 AD4-7 I Input of AD
47 SDA – Not used
48 SCL – Not used
49-51 GND – GND
52 HSTX – Not used
53 REF V I Input of V SYNC
54 IFCS I Input of SH interrupt signal
55 ST-BY CONT I Input of ST-BY control signal
56 INT3 – Not used
57 CW – Not used
58 CCW – Not used
59 IR I Input of SIRCS
60 A1 IN – Not used
61 A1 OUT – Not used
62 DOT I – Not used
63 AC-3 OUT – Not used
64 STATUS – Not used
65-70 MODEL0-5 I/O Model select1-6
71 1C – Not used
72 1D – Not used
73, 74 MIC IN 1, 2 – Not used
75, 76 SW2, 3 – Not used
77 RESET IN I EXT RESET request
78-80 RCODE0 I/O REGION set1-3
81 GND – GND
82 X OUT O Output of X’tal(4MHz)
83 X IN I Input of X’tal(4MHz)
84 EVER 5V – Analog power supply
85-92 AD0-7 I/O Address and data set
93-100 A8-15 I/O Set address
5-1. INTERFACE CONTROL PIN FUNCTION (IC604 on MB-84 Board (10/14))
Pin No. Pin Name I/O Function
Pin No. Pin Name I/O Function
1-4 A16-19 I/O Set Address
5, 6 TIN0, 1 – Not used
7, 8 TOT0, 1 – Not used
9 ALE O Output of address latch inable signal
10 OE O Output of output inable signal
11 GND – GND
12 WRL O Output of write inable signal
13 WRH – Not used
14 HRQ – Not used
15 HAK – Not used
16 INTMS I Input of ready signal
17 CLK – Not used
18 RX I Input of serialbus0
19 TX O Output of serialbus0
20 SCK I/O Serialbus0
21 SI – Not used
22 SO O Output of serialbus1
23 EVER 5V – Digital power supply
24 SCLK I/O Serialbus1
25 BZ O Output of buzzer
26
AUDIO MUTE
O Output of audio mute signal
27
VIDEO MUTE
O Output of video mute signal
28 CGCS O Output of charactor generator chipselect
29 FL2CS – Not used
30 FLCS O Output of FLCS
31 RESET O RESET
32 PPG6 I Input DIAG
33 P.CONT O Output of POWER CONT signal
34, 35 EVER 5V – Analog power supply
36, 37 GND – GND
38 MIC CONT – Not used
39 ECHO CONT – Not used
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