Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Table
Table
Table
Table
Table
Table
Table
2
2
2
Table 2
2
3
3
3
Z-IOD.
2-11.
2—12.
2-13.
2-14.
3-1.
3-2.
3-3.
3-4.
3-5.
ILLUSTRATIONS
BasicSubsystem
.......................................
lé—DeviceSubsystem
...................................
DualControlSubsystem
.................................
Dual Subsystem with Four Simultaneous Channels
. . . . . . . . .
DiskStorageControl(DSC)
..............................
DiskPackDriveDSUl90
................................
DiskPackDriveDSU190B
...............................
DiskPack
....................
DSS 190 or DSS 190B with Six Additional Devices and a
SwitchedChannel
.....................................
DSS 190 or DSSl90B with 14 Additional Devices and Two
Simultaneous Channels
.................................
Dual Control (Two Single Channels) Crossbarred
Subsystem(DCX)
..........-...........................
Two Control Dual Channel Crossbarred Subsystem
. . . . , . . . .
DiskPackRecordingSurfaces
.
BasicTrackFormat
.
HomeAddressField
..
ROField
....
RlField
.......
IncreasedCapacityFormat(ICF)
........................
COCountField
DataFields
...........................................
CNCountField
......
SeekInstructionFormat
................................
TrackHeaderFormat
FormatTrackDataFormat
................ ...... .......
ReadControlRegisterFormat
....................
DSC Operating Controls and Indicators (Freestanding
Control)
........................... ..... ....
Operating Controls and Indicators (Control Integrated
inICU)
..............................................
ControlConfigurationSwitches
..........................
DSU19O Operating Controland Indicators
.................
DSU190B Operating Controls and Indicators
...............
OCOOCIOOOOIOOICIOOCOIOOO
0.00....OOOOII'COUCCIOOICOOOIICOCOOCOOCICC
.CCIOOOCOOOUOOIU...O'COOOOOOC..II.IOIOO
Coco...-IO...OOOOOOOIOGC000000-000300000
.00...
con...
TABLES
Functional Characteristics of the Disk Storage Unit
. . . . . . . .
DiskPackCapacity (Basic TrackFormat)..................
InstructionSet
.........................................
SpecialInstructionSet
..................................
MajorStatusandSubstatusCodes
........................
Control Configuration Switches
DSUl90ControlsandIndicators
..........................
DSUl90BControlsandIndicators
...................}.....
OIOOOOOOOOOOOOOOOOOOQO0000
vi
2-16
DB37