DTC DTC-510B User manual

Data Technology Corporation
DTC 5008 Series
DISK CONTROLLERS
USER'S MANUAL

DATA TECBIIlOLOGY CORPORATION
DTC 588B SERIES DISK COIiTROLLERS
USER'S MANUAL
DTC part number 89-88181. Revision 88
Data Technology Corporation
Main Office
2775 Northwestern Parkway
Santa Clara, California 95851
[phone]
Eastern Region Sales Office
16 Wiggins Avenue
Bedford, HA 81738
[phone]

PREFACE
warranty
Data Technology corporation (DTC) maintains a complete Repair Department
for the sole purpose of providing efficient, reliable service. All DTC
products are warranted against defects in material and workmanship. The
period of coverage and other warranty details are clearly specified in
the DTC purchase agreement. Check this agreement for exact warranty
details.
Accuracy
All information in this manual is based on the latest product
information available at the time of printing. DTC has reviewed the
accuracy of the technical specifications, but DTC cannot be held
responsible for any omissions or errors that may appear in this manual.
Change Information
The DTC product line is constantly being reviewed and improvements are
implemented when appropriate. From time to time DTC will distribute
Field Change Orders and Technical Bulletins to inform users of
enhancements or improvements to their products.
Trademarks
LSI-II is a trademark of Digital Equipment Corporation
VERSAbus is a trademark of Motorola Corporation
SASI is a trademark of Shugart Associates
IBM Personal Computer is a trademark of International Business Machines
Corporation.
Multibus is a trademark of Intel Corporation
Reproduction
Information in this manual must not be reproduced by any means without
the prior written approval of DTC.
--i--

SECTION 3
3.5.2
3.5.3
3.5.3.1
3.5.3.2
SECTION 4
4.1
4.2
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.3
SECTION 5
5.1
5.2
APPENDIX A
A.l
A.2
A.3
APPENDIX B
B.l
APPENDIX C
C.l
c.l.l
C.l.2
C.l.3
C.2
APPENIDX D
APPENDIX E
APPENDIX F
COMMANDS AND STATUS
Page
OpCode 01 (Assign Drive Type) (535B only); .......••••. 76
Opcode 02 (Set Drive. Parameters) .•..••••.••...•.••... 77
~linchester Drive Parameters .•••••.•••...•..•..•• 78-80
Floppy Drive Parameters
(520B only) •••••••..••....•......•..••.....• 81-83
MAINTENANCE & TROUBLESHOOTING
Overv iew .••.•..•••••••....•..•....•....•..•....••...• 84
Class Code 7 Commands ••..••••..•.••.••••.••••.••..•.. 84
OpCode 00 (RAM Diagnostics) ....•.••....••.••••.••.•.. 86
Opcode 01 (Write ECC Error) .••.•..•••..•.•..•. , •...•• 86
Opcode 02 (Read ID Field) ••.••.•..•••.•........•....• 88
OpCode 03 (Perform Drive Diagnostics) .•.•..••..•..... 90
OpCode 06 (Request Logout) ..••••.••..••.•..••.••.. 90-92
LED Error Display .••.•••.••.••.•.••••..••.••.•..•.•.• 93
APPENDICES -INSTALLATION AND GENERAL INFORMATION
Introduction .........•..•.....•..••......•••.•.•..... 95
Mounting •••.•....•.•••...••.•..•.••.•........•..••.•. 95
LOGICAL ADDRESS
Overview ...•••...•..•...........•.••..•.•...•.....•.. 96
Calculation of Logical Address •.••..•••.••....• , .. 96-97
Determining Cylinder Addresses •.•••.•..•..•..•....... 98
INTERLEAVE
Interleave •..••••..••..•.......•..••.••.••••...•..•.. 99
SECTOR FORMATS
Winchester Drive Sector Formats ..•.•.••..•.......... 102
256 Bytes per Sector/33 Sectors per Track •.•..••..•. 102
512 Bytes per Sector/18 Sectors per Track ....•.....• 103
1,024 Bytes per Sector /9 S,ectors per Track •••.••••.• 103
Floppy Drive Format .•••.•.••...•.•.•.••.••.•••••..•. 103
ALTERNATE TRACK USAGE WITH DTC CONTROLLERS ......... . 104
IMPLEMENTING OVERLAPPED SEEKS ON DTC DISK
CONTROLLERS . ........................................ 105
JUMPER SETTINGS FOR DTC 518B •....•.•....•..•........ 106
--iii--

TABLE OF CONTENTS (continued)
APPENDICES Page
APPENDIX G SWITCH SETTINGS
AND JUMPER CONFIGURATION FOR 52BB ••• 109
APPENDIX H SWITCH SETTINGS
AND JUMPER CONFIGURATIOIil FOR 535B ••• 112
H-l
Jumper Settings for SA800/80l ....................... 115
H-2 Jumper Settings for
SA850/SA85l ..................... 116
H-3
Jumper Settings for TAN DON
TA848-l/2 ............... 116
H-4 Jumper
Settings
for AMLYN
5850 ...................... 117
APPENDIX J SWITCH SETTINGS
AND JUMPER CONFIGURATION FOR 535BK .. 118
J-l DTC-5358K Factory Settings .......................... 120
J-2
Switch Settings for KODAK 3.3 ....................... 120
LIST OF TABLES
TABLE
1-1 Controller Features ........................................... 2-4
1-2 Specifications .................................................. 4
2-1 Interpretaion of Request ....................................... 11
3-1 Summary of Class Code'" OpCodes .................... : ........ 35-37
3-2 Sense Byte Error Codes .......•.............................•... 44
3-3 Floppy Drive Track Format (Byte 5 Class. Code 6) ............ 72-73
4-1 Class Code 7 Commands .......................................... 85
4-2 LED Error Displays ............................................. 94
LIST OF ILLUSTRATIONS
FIGURES
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
3-1
3-2
3-3
3-4
3-5
3-6
Typical System Configuration ............................ , ....... 7
500B Series Host Interface Signals and Pin Designation. '" ...... 8
Controller to Winchester Drive Control Interface ............... 12
Controller to Winchester Drive Data Interface .................. 13
520B Controller to Floppy Disk Drive Interface ................. 14
535B Controller to Floppy Drive Interface ...................... 15
5358 Controller to Amlyn Drive Interface .•..................... 16
535BK Controller to KODAK Disk Drive Interface ..............•.. 17
Timing Diagrams .............•............................... 20-25
Flowcharts .................................................. 26-29
Typical Command Discriptor Block (CDB) ......................... 32
Test Drive Ready ............................................... 38
Recalibrate Drive .............................................. 39
Request ECC Syndrome .....................•..................•.. 40
Request Sense .................................................. 41
Format Drive ..............................................••... 46
--iv--

TABLE OF CONTENTS (continued)
LIST OF ILLUSTRATIONS
FIGURES
Page
3-7
3-8
3-9
3-10
3-11
3-12
3-l3
3-14
3-15
3-16
4-1
4-2
4-3
B-1
F-l
F-2
G-l
G-2
H-l
H-2
J-l
J-2
Check Track Format ..................•.......................... 48
Format Track .....•.............•..............•................ 50
Format Bad Track .•..................•.................•........ 52
Read Block Command Flowchart ................................... 55
Write Block Command Flowchart .................................. 58
Seek •........•................................................. 61
Search Routine Flowchart ....................................... 65
Random Read Routine Flowchart .................................. 66
Increment Sector, Head, or Cylinder Flowchart .................. 67
Copy Command Flowchart ......................................... 70
h'ri te ECC Command .............................................. 87
, Read ID Field .................................................. 89
Drive Diagnostic ............................................... 91
Physical versus Logical Sector ................•......•.... 100-101
DTC 510B Cable Connections .................................... 107
DTC 510B Board Outline with Mounting Holes .................... 108
DTC 520B Cable Connections ............•....................... 110
DTC 520B Board Outline with Mounting Holes .................... 111
DTC 535B Cable Connections .................................... 1Ll'
DTC 535B Board Outline with Mounting Holes .................... 11~
DTC 535BK Cable Connections .....•...•......................... 121
DTC 535BK Board Outline with Mounting Holes ...•............... 122
--v--

SECTION 1
1.1 Scope of Guide
This guide, for Data Technology Corporation's 500B Series Disk Drive
Controllers, provides:
Equipment Information and Specifications
Interface and Configuration Information
Command and Programming Information
Installation and Testing Instructions
Maintenance and Troubleshooting Hints
This guide is intended to satisfy the information requirements of OEM
Engineers; Engineering and Production Technicians; Personal Computer
Enthusiasts; and others with a need to know about these disk
Controllers.
1.2 Overview of Equipment
The DTC-5l0B is designed to control two industry standard ST506/406 or
compatible 5.25 Winchester Disk Drives.
The DTC-520B is designed to control a maximum of four disk drives. It
supports up to two ST506/406 or compatible 5.25 inch Winchester Disk
Drives plus two industry standard SA4XX, or equivalent, (48 or 96TPI)
Floppy Disk drives.
The DTC-535B is designed to control a maximum of four drives in any
combination of up to two industry standard 5.25 inch Winchester Disk
Drives, and any combination of two industry standard SA8XX type
interface 8 inch Floppy Disk Drives. Alternately, it can be strapped
tor a combination of two hard disk drives and two AMLYN 5850 drives or
one SA8XX and one AMLYN 5850.
The DTC-535BK is designed to control a maximum of four drives in any
combination of up to two industry standard ST506 5.25 inch Winchester
Disk Drives, or equivalent, or up to four 5.25 inch KODAK 3.3 Floppy
Disk Drives.
Currently supported disk drives are
produced by:
KODAK IMI
SEAGATE
COGITO
BASF
MPI SHUGART
QUANTUM
Cii-HB OPE TAN DON MICROPOLIS
CMI RODIME TI
TULIN
FUJITSU MINISCRIBE MICROSCIENCE MAXTOR
The interface to the !lost Computer is via the industry standard SASI bus
and is easily accomplished by a standard DTC Host Adapter. DTC is a
major supplier of SASI compatible Host Adapters for most computer system
buses.
--1--

1.2 OVerview of Equipment (continued)
Contact your DTC sales representative for information on available Host
Adapters.
Proprietary LSI Circuits, based on DTC's field-proven design, allow for
enhanced performance, small size and economy. Reliability and
maintainability have been proven by statistical information from field
installation. The Mean Time between Failures (MTBF) for these
Controllers is 20,000 hours. The Mean Time to Repair (MTTR) is 0.1 hour.
Features found in a DTC-500B Series Controller are given in Table 1-1.
AUTOMATIC SEEK
VERIFY
MULTIPLE BLOCK
TRANSFERS
AUTOMATIC HEAD
and CYLIII1DER
SWITCHIHG
PARITY SELECTIOH
PROGRAMMABLE
SECTOR
IBTERLEAVIHG
BARD DISK
SECTOR SIZE
·PROGRAMMABLE
FLOPPY TRACK
FORMAT
TABLE 1-1
Controller Features
A seek command is implied in every data
transfer command (READ, WRITE, CHECK TRACK
FORMAT, etc.). If the heads are not positioned
over the correct cylinder, a seek is initiated,
and a cylinder verification is performed after
the seek completes.
Allows more than one block to be transferred
with one command.
~ilien the end of a track is reached (during a
multi-block data transfer) the Controller
switches heads to the next track. lilien the end
of a cylinder is reached, the Controller seeks
to the next cylinder, selects head 0 and
resumes transfer.
Odd parity is generated within the Controller
for all information put on the I/O bus. ~fuen
parity is enabled (by jumper selection) all bad
parity information is flagged.
Up to a 16 way programmable interleave is
provided.
Selectable Winchester Sector size of 256 bytes
(33 Sectors), 512 bytes(18 sectors), or 1,024
bytes (9 Sectors).
The type of track format on the floppy media
that is going to be used can be passed to the
Controller through software.
--2--

MEDIA ASSIGNMENT
FUNCTION
HOST INTERFACE
PROTOCOL
LOGICAL to
PHYSICAL
DRIVE CORRELATION
PROGRAMMABLE DISK
DRIVE PARAMETERS
DOUBLE STEP
FUNCTION
CONTROLLER 10
SELECTABLE
ON BOARD SECTOR
BUFFER
ALTERNATE TRACK
ADDRESSING
DATA ERROR
SENSING
and CORRECTION
TABLE 1-1
Contro11er Features (continued)
This function allows the user to read
conventional 48 tpi or 96.tpi diskettes on
KODAK 3.3 disk drive.
A bi-directional (SASI) bus between the
Controller and Host provides a simple.and
efficient communication path. A high level
command set permits effective con~and
initiation.
Logical unit numbers (LUN's) are independent of
physical port numbers. All accesses specify
LUN's
The disk drive parameters are passed to the
Controller from the Host (as data) to define
the drive's characteristics. Standard firmware
supports up to 8 heads. Up to 1024 cylinders
are supported. Optional firmware on some
Controllers support up to 16 heads.
Allows the user to Read/Hrite 48 TPI diskettes
on a 96 TPI Floppy Drive.
A jumper is provided to specify the Controller
ID number on the 5l0B and 520B. The 535B and
535BK use switches to specify the Controller ID
number.
A sector buffer is provided on the Controller
to eliminate the possibility of data overruns
during a data transfer.
The Host can assign an alternate track for a
defective track. (Subsequent accesses to the
defective track will cause the Controller to
transfer data from the alternate track
address). The maximum number of alternate track
addresses is half the total number of tracks on
the disk.
If a data error is detected during a disk data
transfer, the Controller indicates whether or
not it is correctable. If correctable, either
a pointer and mask can be requested by the Host
for applying the correction or the error can be
automatically corrected.
--3--