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Radio Shack CCR-81 Reference Handbook

Radio Shack CCR-81
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e3
e4
r---
A7
A6
-v1
24 PIN
24
I
A5 2
DIP
23~
A8
A4
~3
HEADER
22-
A9
A3
~4
FOR
21
I
A2 5
Z330R
20 I
Z34
19'""'
,Al0
Al
~6
AO
~7
18 I
MD7
MDO
~8
17-
~9
16-
MD6
MDl
10
Jl
15-
MDS
~-oll
14'""'
MD4
I 12
130-I
MD3
L
___
_
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1 A7
VCC
24
2 A6
23
3 A5
A8
22
4
A4
A9
21
S A3
CS
20
6 A2
es
19
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7
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All
18
8
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08
17
c-
9
16
10
01
07
15
02
06
~
03
ROM
A/B
OS
14
,--l?
GND
04
13
L
1 A7
vec
24
2 A6
23
A8
3 A5
A9
22
Rl
4
A4
21
_
4.7K
es
5 A3
es
20 r
6 A2
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7
Al
All
18
8
AO
08
17
9 16
01
ROM
e
~~
10
02
lS
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~
03
05
14
GND
12
GND
04
~
(
All
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~
GND
o 1
C2
~
15
AO
lp2
A13
2 3
14
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3p4
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40
5
,
ROM*
12
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Z4 6
07
74LS42
~
0
b
(
+5V
16
vee 9
p
A12
PADS
FOR
6 - CONDUCTOR
RIBBON CABLE
Figure 27. Level
II
BASIC Schematic Diagram
(for
CPU
Boards - Current Level II ROM)
109

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Radio Shack CCR-81 Specifications

General IconGeneral
BrandRadio Shack
ModelCCR-81
CategoryDesktop
LanguageEnglish

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