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Digital Equipment RX02 Manuals
Manuals and User Guides for Digital Equipment RX02. We have
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Digital Equipment RX02 manual available for free PDF download: Technical Manual
Digital Equipment RX02 Technical Manual (163 pages)
Floppy disk system
Brand:
Digital Equipment
| Category:
Floppy Disk Drive
| Size: 8 MB
Table of Contents
Table of Contents
4
Figures (Coot)
12
Preface
13
Chapter 1 General Information
14
Introduction
14
General Des<:: Ri Ption
15
Interface Modules
15
Microprogrammed Controller
15
Read/Write Electronics
15
Electromechanical Drive
15
Power Supply
17
Option Description
17
Operation for Single Density Recording Only (RX8E, RXII, Rxvll)
19
Operation
19
LSI-II Operation
20
Operation
20
PDP-II Operation
20
Specifications
21
Systems Compatibility
22
Media
22
Recording Scheme
23
Double Frequency (FM)
23
Miller Code (MFM)
23
Logical Format
25
Header Field Description
26
Data Field Description
26
Track Usage
27
Chapter 2 Installation
28
Site Preparation
28
Space
28
Cabling
29
AC Power
30
Power Requirements
30
Input Power Modification Requirements
30
Fire and Safety Precautions
31
Configuration Guidelines
31
Environmental Considerations
31
General
31
Temperature, Relative Humidity
31
Heat Dissipation
31
Radiated &Nissions
31
Cleanliness
33
Unpacking and Inspection
33
General
33
Tools
33
Unpacking
33
Cabinet-Mounted
33
Separate Container
34
Inspection
34
Installation
34
Chapter 3 User Information
39
Customer Responsibility
39
Care of Media
39
Handling Practices and Precautions
39
Diskette Storage
40
Short Term (Available for Immediate Use)
40
Long Term
40
Shipping Diskettes
40
Operating Instructions
41
Operator Troubleshooting
41
Chapter 4 Programming
42
RX8E and RX28 PROGRAMMING INFORMATION
42
Device Codes
42
Instruction Set
43
RX8E Load Command (LCD) - 67Xl
43
RX28 Load Command - (First Byte 67Xl, Second Byte 67X2)
44
Transfer Data Register (XDR) - 67X2
44
SER - 67X4
45
SDN - 67X5
45
INTR - 67X6
45
INIT - 67X7
45
Register Description
45
Command Register
45
Error Code Register
46
RX2TA - RX Track Address
47
RX2DB - RX Data Buffer
48
RX8E - RX Error and Status
48
RX28 - RX Error and Status
49
Function Code Description
50
Fill Buffer (000)
51
Empty Buffer (001)
51
Write Sector (010)
52
Read Sector (011)
53
Maintenance Read Status (101) for RX28 Only
53
Read Status (101) for Rx8Eonly
53
Write Deleted da Ta Sector ( 11 0)
53
Read Error Code Function (111)
53
Power Fail
53
Rx8E
54
RX8E Programming Examples
55
Write/Write Deleted Data/Read Functions
55
Empty Buffer Function
57
Fill Buffer Function
58
RX28 Programming Examples
58
RXII and Rxvl1 PROGRAMMING INFORMATION
65
Register and Vector Addresses
65
Register Description
65
RXCS - Command and Status (177170)
65
RXDB - Data Buffer Register (177172)
67
RXTA - RX Track Address
67
RXSA - RX Sector Address
67
RXDB - RX Data Buffer
68
RXES - RX Error and Status
68
Function Codes
69
Power Fail
72
Programming Examples
72
Restrictions and Programming Pitfalls
74
RX211 and RXV21 PROGRAMMING INFORMATION
77
Register and Vector Addresses
78
Register Description
78
Fill Buffer (000)
78
Empty Buffer (001)
82
Write Sector (010)
82
Read Sector (011)
82
Set Media Density (100)
82
Maintenance Read Status (101)
85
Write Sector with Deleted Data (110)
85
Read Error Code (111)
85
RX02 Power Fail
85
Error Recovery
86
Write/Fill Buffer
86
Read/Empty Buffer
87
Chapter 5 Theory of Operation
89
Overall System Block Diagram
89
Omnibus to RX8E/RX28 Interface Signals
89
Interface Module to ~CPU Controller Signals
94
CPU Controller to Read/Write Electronics Signals
96
Read/Write Electronics to Drive Signals
97
Interrupt Control and Skip Logic
100
C Line Select Logic
100
Interface Register
100
Sequence and Function Control Logic
101
Rxll Interface (M7846) Block Diagram Description
102
Address Decoder
102
Data Path Selection
102
Interface Data Buffer Register
104
Sequence and Function Control Logic
104
Initialize Logic
106
RX211 Interface (M8256) Block Diagram Description
107
Address Decoder, Buffer Selector, SSYN Register
107
Command and Status Buffer
110
Input/Output Transceiver, Buffer Selector
110
Input/Output Transceiver and Transmit/Receive Data Circuit
112
Bus Control Circuits
113
Unit Level Description
113
Microprogrammed Controller (M7744) Hardware Description
113
PROM, ROM Register, Processor and Sequencer Circuits
113
Branch Control Circuits
118
I/O Control Circuits
118
Sector Buffer and Control Circuits
119
Data Selection and CRC Circuits
119
Timing and Synchronizing Circuits
120
Power Fail Circuit
120
Microprogrammed Controller Software Description
120
Initialize Routine
120
Find Header (FIND HD) Subroutine
122
Read Address Mark (RDAM) Subroutine
123
Read (RD) Sector Subroutine
123
Write/Write Sector Subroutine
123
Read Error Register (RDERRG) and Set Density (SET DEN) Subroutines
123
Fill/Empty Buffer Routine
123
Find Track Subroutine
123
Write/Write Sector Subroutine Flowchart
128
Read Error Register and Set Density Subroutines Flowchart
130
Fill/Empty Buffer Routine Flowchart
131
Select Drive and Find Track Subroutines Flowchart
132
Decode Command (DECCMD) Routine
133
Find Sector (FINDSE), Send Word 12 (SNDWI2)
133
Decode Command Routine Flowchart
134
Maintenance Read Status and Check Ready Subroutines Flowchart
136
Get Parameter, Step Head, Wait, Wait Run, and Write Zeros
137
Find Sector, Send Word 12, Send Word 8, Get Command and Get Word
138
Flowchart Subroutines
138
Maintenance Check Ready Subroutine Flowchart
139
Read/Write Electronics Block Diagram
141
Data SYNC Timing Diagram
142
Drive Mechanism
143
Positioning Mechanism
143
Head Load Mechanism
143
Centering Cone and Drive Hub
145
Positioning Mechanism
146
Chapter 6 Maintenance
147
Equipment Care
147
M7744, M7745 Failures
147
Drive Failures
147
Troubleshooting with Diagnostics
147
Troubleshooting Without a Diagnostic
148
Troubleshooting Chart
149
And CM05-8 Based Systems
151
Removal and Replacement
151
Module Replacement Procedures
151
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