Xerox 7240 Manuals

Manuals and User Guides for Xerox 7240. We have 1 Xerox 7240 manual available for free PDF download: Reference Manual

Xerox 7240 Reference Manual

Xerox 7240 Reference Manual (50 pages)

Removable Disk Storage System

Brand: Xerox | Category: Storage | Size: 9 MB

Table of Contents

Table of Contents
5
General Description
9
- Introduction
  9
  - System Components
    9
Functional Description
11
- Data Presenta ~Ion
  11
- System States
  11
  - Operational States
    11
  - Unavailable Condition
    11
  - Ready Condition
    11
  - Busy Condition
    11
  - Mode
    11
  - Transitions between States
    11
- Data Transfer
  11
Program Interface
12
- Disk Pack Organization
  12
- Data Organization
  12
- Data Access
  12
- Error Detection
  12
- Headers
  12
- Device Orders
  12
  - Seek
    12
  - Header Write
    12
  - Check-Write
    12
Sense Status Bytes 8 and
14
- Read
  16
- Header Read
  16
- Restore Carriage
  16
- Key Events
  17
- Status Response
  18
  - 1/0 Instruction Status Bits
    18
  - Device Status Byte
    18
- Programming Considerations
  18
  - Command Chaining
    18
  - Interrupts
    18
  - Sequence of Activity
    18
Instruction Execution Response
19
Status Response to SIO, TIO, and HIO
19
Status Response to TDV
20
Status Response to AIO
21
Operational Status Byte
33
Removable Disk Storage System Testing Sequence
34
Recommended Recovery Procedures
37
Operator Panel Controls and Indicators
39
- Panel
  40

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