Sign In
Upload
Download
Table of Contents
Contents
Add to my manuals
Delete from my manuals
Share
URL of this page:
HTML Link:
Bookmark this page
Add
Manual will be automatically added to "My Manuals"
Print this page
×
Bookmark added
×
Added to my manuals
Manuals
Brands
Alpha Micro Manuals
Controller
AM-210
Technical manual
Alpha Micro AM-210 Technical Manual
Floppy disk controller circuit board
Hide thumbs
1
2
3
4
5
Table Of Contents
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
page
of
150
Go
/
150
Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Figure Page
D Flip-Flop Connections
Tri-State Buffer Connections
General Description
Introduction
Circuit Board Description
Application
Operating Data
Introduction
Capabilities and Specifications
Interface Description and Wiring
Bus Inter Ce
Floppy Drive Interface
User Options
Bootstrap Header Option
I/O Port Address
Vectored Interrupt Option
Seek Complete Interface Line Option
Software Control Step Rate Option
Data Separator Timing Opt~~N
Write Pre-Compensation Options
Programming
Introduction
Addressing
External Control Registers
Random Access Memory
Interrupts
Bootstrap PROM
Functional Thuory of Operation
Diskette Formatting
Introduction
Circuit Board Operation
Data out Port
Data in Port
Bootstrap Circuitry
I/O Address Circuitry
Command Generator
RAM and Control Circuitry
Ternal Status and Control Registers
Data-Clock Separator
Data Separator Timing
Write Pre-Compensation
PRDY Control Logic
PRDY Control Logic Timing
Circuit Module Description
Floppy Disk Formatter/Controller Description
Floppy Disk Formatter/Controller Pin Connections
Organization
Floppy Disk Formatter/Controller Module Block
Processor Interface
Floppy Disk Interface
Head Positioning
Disk Read Operations
Disk Write Operation
Command Description
4.2.1.10 Type II Commands
Type II Command Flow
4.2.1.11 Type III Commands
Type III Command Write Track
Type IV Commands
Status Description
Formatting the Disk
Ibm 3
By T E S / Sec Tor
IBM Track Format
IBM System 34 Format - 256 Bytes/Sector
Non IBM Formats
Timing Characteristics
Read Enable Timing
Write Enable Timing
Input Data Timing
Miscellaneous Timing
1024 X 4 Bit Static RAM (U30, U31)
Static RAM Connections
UV Erasable PROM Connections
8K UV Erasable PROM Timing
Bcd/Decimal Decoder/Driver (U13)
Decoder/Driver Logic and Connections
Tri-State Buffers (U16)
Trl-State Buffer Connections
Bus Comparator (U25, U26)
Bus Comparator Connections
Tri-State Octal Buffers (U36)
Tri-State Buffers (U39)
Dual J-K Negative-Edge Triggered Flip-Flops with Preset (UB)
J-K Flip-Flop Connections
Dual Retriggerable One-Shots with Clear
Decoder (U29)
Data Selector/Multiplexer (U17)
Trimstate Inverter Buffer (U33, U40)
Tri-State Octal Buffer (U41)
Four-Bit Binary Ripple Counter (U23)
Voltage Controlled Oscillator (U12)
Tri-State D Flip-Flops (U43)
Dual 4-Bit Binary Counter (U9, U20)
Logic Delay Module (U6)
Block Diagram
Programmable Read Only Memory' (U19)
Octal D-Type Flip-Flop with Clear (U34~ U35)
Maintenance and Troubleshooting
Introduction
Circuit Board Checkout
Warranty Procedures
Troubleshooting Procedures
Operational Test
Diagnostic Procedures
Floppy Controller Chip Test (1791T)
Calibration (SEEK)
Floppy Interface Drive Test (FTST)
Evaluation Procedure
Diagram
Advertisement
Quick Links
Download this manual
Table of
Contents
Previous
Page
Next
Page
1
2
3
4
5
Advertisement
Table of Contents
Troubleshooting
MAINTENANCE AND TROUBLESHOOTING
119
Warranty Procedures
120
Need help?
Do you have a question about the AM-210 and is the answer not in the manual?
Ask a question
Questions and answers
Related Products for Alpha Micro AM-210
Alpha Micro AM-100
Alpha Micro AM-1000
Alpha Micro AM-1006
Alpha Micro AM-410
Alpha Micro AM-600/T
Table of Contents
Print
Rename the bookmark
Delete bookmark?
Delete from my manuals?
Login
Sign In
OR
Sign in with Facebook
Sign in with Google
Upload manual
Upload from disk
Upload from URL
Need help?
Do you have a question about the AM-210 and is the answer not in the manual?
Questions and answers