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Sharp MZ-3500 User Manual Page 51
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Table of contents
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5-3. MFD interface block diagram
MZ3500
56 -
1
2
...
46
47
48
49
50
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54
55
56
...
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SERVICE MANUAL
1
1. SPECIFICATIONS
2
Keyboard layout
3
1-3. MZ-1U02
3
1-4. MZ-IR03
4
1-6. MZ-1R06
5
1-7. MZ-1D07
6
2-1. SDO (INITIALIZE STATE)
8
MAIN CPU
8
M* )S V 1 M/}
9
MZS.'tOO
10
2.3. SD2 (ROM based BASIC)
11
Operational description
12
3. CPU AND MEMORY
13
L© 'MTR !
14
3-3. Sub CPU and I/O port
15
1) Block diagram
16
‘ VK IN MEMCKT MM I Mf
20
4. CRT DISPLAY
22
X 25 lines screen.)
24
For Model 3200 senes
26
4-2. Video RAM
27
5) Synchronize signal timing
30
X : Y - 1 : 2
30
X : Y : 1 : 1
31
'iBK byte
32
(option I)
32
48K byte
32
(option tl)
32
M Z 3500
34
CSP 2 Block Diagram
37
20 GND IN
38
ASCII C.G. Structure
40
4 9. VSYNC
41
ARIO = HI
42
> FIFO Empty?
44
[Explanation]
45
Straight line drawing
46
Whereas
46
5. MFD INTERFACE
47
^ 0 ^ 0 1
49
8) Data write procedure
50
5^. FDC (UPD765)
52
UPD765 signal description
53
5-5. Data recording method
54
<ITE DATA
55
Write pulse [] fl d fl R
56
Polarity inversion
56
+5V RtAD DATA
57
M -- 3.1
58
©"T
58
Advanced
59
Does not trace i l^is
59
5-11. Media format
60
(Bbyles)
61
02 0\ FF FF
62
( 2KX 152 = 304K )
63
Stop bit
64
6-4. System switch functions
65
6-5. 8251AC controls
65
2) Data output control
66
3) Data input control
67
7-D0C>#
68
3iil>CPU of Ni^
70
<i>
71
7 4. Data transfer timing
72
7-6. I/O port map
73
8. OTHER INTERFACES
74
-<3 ri>
75
MZ,"500
76
DIP SW(A)
79
1. BLOCK DIAGRAM
80
A. +5V and +12V supplies
80
M 7,3500
81
3. Alarm circuit
82
DESCRIPTION
83
10-2. Key search timing
84
JLJl_JlJT_ri_rLJl
85
Power ON
86
START (5mS)
86
11. SELF CHECK FUNCTIONS
87
CD SDO bank alternation error
88
11-2. Sub-CPU side
89
.8 test the
90
20 lines
90
/<.y ^ Jf -y > K W
91
8) ROM-IPL
92
S3Si-54Kl=-.*- •
93
12. IPL FLOW CHART
96
MAIN CPU IPL FLOW CHART 2/2
97
12 2. SUB CPU IPL FLOW CHART
98
■ I I Y Y TV
99
IjJliJlJjljJljJLllLljLLJ
99
LlJ LiJ LiJ Lei LiJ LLl LiJ
99
LJLeJ'LDliJLiJLLjLJLiJ
99
Pi co vO co fO Pi
100
Ч Г ^n UO
100
¿. ^ О
101
Û. CM Û
101
GUIDE LIST
102
I'l Exteriors
103
1 Exteriors
104
PWB & Fixing angles
105
[3 Connector
106
[4] Others
107
5 CPU PWB
107
5I CPU PWB
108
U Power supply unit
108
[6j Power supply unit
109
П MZ1R06 (RAM board)
111
SHARP CORPORATION
116
Industrial Instruments Group
116
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