Tandy 26-3334 Service Manual page 4

LIST OF FIGURES
1-1.
Color Computer
3
Installation
7
1-2. Color Computer
3
Memory Map
8
1-3.
Memory Map
for
SAM Control Register
21
3-1.
Removal of Top Cover
26
3-2
Removal
of
Main PCB
26
3-3. Main PCB
][
2
7
3-4.
512K RAM Card
27
4-1. Block Diagram
28
NTSC Version
28
PAL Version
29
5-1. MC68B09E Programming Model
30
5-2. MC68B09E
Pin Assignments
31
5-3.
MC68B09E Read/Write Timing
at
0.89 MHz
33
5-4. DRAM Block Diagram
34
5-5
.
DRAM Timing
35
5-6.
Color Computer
3
Address Decoding
36
5-7. MMU Block Diagram
37
5-8. PIA Block Diagram
39
5-9.
Color Computer
3
Keyboard Array
40
5-10.
DAC Block Diagram (IC7)
42
5-11.
SALT Block Diagram
(IC8)
44
5-12. Color Computer
3
Power Supply
45
5-13.
I/O Circuitry
45
5-14.
RS-232C Connector Pinout
48
5-15.
Joystick Schematic
52
5-16. Antenna Switch
Box Schematic
....53
LIST OF TABLES
1
Line Printer Variables
50
2
Alternate Line Printer Variable Values
50
3
Cartridge Connector Signals
,
51
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