____
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____
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READY
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TX
RET
RX
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INTR
RST
IN
2
j
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R4
R6
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1K
2.7K
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47
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2N2907
13
vv
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INTR
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A11
A11
8085A
A12
RST 5.5
9
A13
RST 5.5
RST 6.5
8
A14
RST 6.5
A15
HOLD
39
HOLD
101M
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RST
OUT
21~-120
AD
WR
J1
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18
10
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36 RESET IN
24
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D1
D2
D3
D4
D5
D6
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r--
12
13
14
15
16
17
18
19
21
22
23
24
25
26
27
28
34
30
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32
31
37
11
38
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UlUlI
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FIGURE
3.
SMALL SYSTEM SCHEMATIC (similar to the schematic of Intel's
SDK·8S)
A1-4
III
1'1
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I,'
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1,1'
WRI
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