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Xerox 7260 Manuals
Manuals and User Guides for Xerox 7260. We have
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Xerox 7260 manual available for free PDF download: Reference Manual
Xerox 7260 Reference Manual (58 pages)
Removable Disk Storage System
Brand:
Xerox
| Category:
Storage
| Size: 13.63 MB
Table of Contents
Table of Contents
5
General Description
9
System Components
9
Characteristics of 7265/7266 ("B") System
11
Functional Description
13
Data Presentation
13
Disk System States
13
Mode
13
Operational States
13
Ready Condition
13
Busy Condition
13
Unavailable Condition
13
Transitions between States
14
Data Transfer
14
Device State Transitions
14
Program Interface
15
Disk Pack Organization
15
Data Organization
15
Headers
15
Data Access
15
Check Characters
15
Disk Pack Organization
16
Device Orders
18
Header Write (X'09')
18
Seek (X'83' ,X'03')
19
Write (X'ol')
19
Check-Write (X'05')
20
Header Read (X'OA')
20
Read 1 (X' 12')
20
Read
21
Restore Carriage
21
Reserve (X'07)
21
Release (X'17')
21
Condition Release Interrupt (X' Lf', X'OF')
21
Select Test Mode
22
Buffer Test Mode
22
Controller Test Mode
22
Device Test Mode
22
Incremental Clock Test Mode
22
Force Device 1/0 Parity Error
22
Force Read Data Error
23
Force IOP Input Parity Error
23
Force IOP Output Parity Error
23
TDV Instruction in Test Mode
23
Sense (X'04')
23
Key Events
24
Start Input/Output
25
Unusual End Conditions
25
Channel End Conditions
25
Transmission Error Conditions
25
Incorrect Length Conditions
25
Status Response
26
Condition Codes
26
Device Status Byte
26
Operational Status B y T E
26
IOP Status Byte
26
Condition Code Settings
26
Device Status Response for SIO, HIO, and TIO
27
Device Status Response for TDV
27
IOP Status Byte for AIO
29
Programming Considerations
30
Command Chaining
30
Surface Flawing
30
Surface Operations
30
Seek and Restore Operations
30
Dual Access Considerations
30
Data In/Data out Operations
32
Reserve Order
32
Select Test Mode Order
32
Seek Order
33
Sense Order
34
Header Read Order
36
Position Verification
37
Write Order
38
Check-Write Order
39
Read Orders
40
Program 1/0 Interrupt Environment
41
Disk System Interrupt Environment
41
Controller-Initiated Interrupts
41
IOP-Initiated Interrupt
41
Attention Interrupt
41
Condition Release Interrupt Order
41
Release Interrupt
42
On-Sector Interrupt
42
Disk System Error Detection Environment
42
IOP and Controller Parity Checks
42
Device Address Parity
42
Read Check Character Bytes
42
File Address Verification
42
I/O Fault Detection and Recovery Actions
42
Interrupts
43
Priority of Device-Dependent Testing
43
Xerox Removable Disk Storage Systems Testing Sequence
43
Recovery Actions
45
Fault Logging
46
Irrecoverable Errors
46
Operations
47
Controls and Indicators
47
Operator Control Panel
47
Disk Drive Operator Control Panel
47
CE Maintenance Panel
48
Disk Drive CE Maintenance Panel
48
Operating Procedures
49
Disk Pack Installation
49
Opening Top Door on Disk Drive
49
Lifting Disk Pack by Top Canister Handle
49
Removing Bottom Canister Cove
49
System Power Turn on
50
Controller Power Turn on
50
Controller Cabinet Power Panel
50
Disk Drive Power Turn on
51
Disk Drive Start up Procedure
51
Disk Drive Power Assembly Panel
51
Disk Drive Stopping Procedure
52
System Power Turn off
52
Controller Power Turn off
52
Disk Drive Power Turn off
52
Disk Pack Removal
52
Removing Disk Pack
52
The Care and Maintenance of Disk Packs
53
Handling
53
Labeling
53
Inspection
53
Filter Replacement
54
Disk Pack
54
Location of "0" Ring on Filter
54
Removing "0" Ring
54
Usage Log
55
Cleaning
55
Storage
55
Removing Disk Pack Filter
55
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