Alpha Micro AM-210 Manuals

Manuals and User Guides for Alpha Micro AM-210. We have 1 Alpha Micro AM-210 manual available for free PDF download: Technical Manual

Alpha Micro AM-210 Technical Manual

Alpha Micro AM-210 Technical Manual (150 pages)

Floppy Disk Controller Circuit Board

Brand: Alpha Micro | Category: Controller | Size: 5 MB

Table of Contents

Table of Contents
6
Figure Page
11
D Flip-Flop Connections
11
Tri-State Buffer Connections
11
- General Description
  14
Introduction
14
Circuit Board Description
14
Application
14
- Operating Data
  16
Introduction
16
Capabilities and Specifications
16
Interface Description and Wiring
16
- Bus Inter Ce
  16
- Floppy Drive Interface
  21
User Options
24
Bootstrap Header Option
24
- I/O Port Address
  24
- Vectored Interrupt Option
  24
- Seek Complete Interface Line Option
  25
- Software Control Step Rate Option
  25
- Data Separator Timing Opt~~N
  25
- Write Pre-Compensation Options
  26
- Programming
  28
Introduction
28
Addressing
28
External Control Registers
28
Random Access Memory
33
Interrupts
34
Bootstrap PROM
34
- Functional Thuory of Operation
  36
Diskette Formatting
34
Introduction
36
Circuit Board Operation
36
- Data out Port
  52
- Data in Port
  52
- Bootstrap Circuitry
  52
- I/O Address Circuitry
  53
- Command Generator
  53
Data Separator Timing
55
- Write Pre-Compensation
  56
- PRDY Control Logic
  56
PRDY Control Logic Timing
57
- Circuit Module Description
  59
- Floppy Disk Formatter/Controller Description
  59
Floppy Disk Formatter/Controller Pin Connections
59
- Organization
  64
Floppy Disk Formatter/Controller Module Block
65
- Processor Interface
  67
- Floppy Disk Interface
  68
- Head Positioning
  69
- Disk Read Operations
  71
- Disk Write Operation
  72
- Command Description
  73
4.2.1.10 Type II Commands
80
Type II Command Flow
81
4.2.1.11 Type III Commands
85
Type III Command Write Track
87
- Type IV Commands
  88
Status Description
88
Formatting the Disk
90
Ibm 3
91
- By T E S / Sec Tor
  91
IBM Track Format
91
IBM System 34 Format - 256 Bytes/Sector
92
- Non IBM Formats
  93
Timing Characteristics
94
Read Enable Timing
94
Write Enable Timing
95
Input Data Timing
96
Miscellaneous Timing
96
- 1024 X 4 Bit Static RAM (U30, U31)
  97
Static RAM Connections
97
UV Erasable PROM Connections
100
8K UV Erasable PROM Timing
100
- Bcd/Decimal Decoder/Driver (U13)
  102
Decoder/Driver Logic and Connections
102
- Tri-State Buffers (U16)
  103
Trl-State Buffer Connections
103
- Bus Comparator (U25, U26)
  104
Bus Comparator Connections
104
- Tri-State Octal Buffers (U36)
  105
- Tri-State Buffers (U39)
  106
Dual J-K Negative-Edge Triggered Flip-Flops with Preset (UB)
106
J-K Flip-Flop Connections
106
- Dual Retriggerable One-Shots with Clear
  107
- Decoder (U29)
  108
- Data Selector/Multiplexer (U17)
  109
- Trimstate Inverter Buffer (U33, U40)
  110
- Tri-State Octal Buffer (U41)
  110
- Four-Bit Binary Ripple Counter (U23)
  111
- Voltage Controlled Oscillator (U12)
  112
- Tri-State D Flip-Flops (U43)
  113
- Dual 4-Bit Binary Counter (U9, U20)
  114
- Logic Delay Module (U6)
  115
Block Diagram
115
Introduction
119
- Circuit Board Checkout
  119
Warranty Procedures
120
- Troubleshooting Procedures
  120
- Operational Test
  120
- Diagnostic Procedures
  121
- Floppy Controller Chip Test (1791T)
  124
- Calibration (SEEK)
  125
Floppy Interface Drive Test (FTST)
129
- Evaluation Procedure
  134
Diagram
147

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