Digital Equipment DTR01 User manual

DTR01/DR01
Channel Interface Subsystem
Technical Manual
digital equipment corporation •marlboro, massachusetts

EK-DTR01-TM-001
DTR01/DR01
Channel Interface Subsystem
Technical Manual
digital equipment corporation •mariboro, massacliusetts

1st Edition, October 1978
Copyright ®1978 by Digital Equipment Corporation
The material in this manual is for informational purposes and is
subject to change without notice.
Digital Equipment Corporation assumes no responsibility for any
errors which may appear in this manual.
Printed in U.S.A.
This document was set on DIGITAL'S DECset-8000 computerized
typesetting system.
The following are trademarks of Digital Equipment Corporation,
Maynard, Massachusetts:
DIGITAL DECsystem-10 MASSBUS
DEC DECSYSTEM-20 OMNIBUS
PDP DIBOL OS/8
DECUS EDUSYSTEM RSTS
UNIBUS VAX RSX
VMS IAS
11/78-38

CONTENTS
Page
CHAPTER 1INTRODUCTION
1.1
1.2
1.3
1.4
1.4.1
1.4.2
1.4.3
1.4.4
CHAPTER 2
2.1
2.2
2.3
CHAPTER 3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
CHAPTER 4
4.1
4.1.1
4.1.2
4.2
4.2.1
PURPOSEAND USE 1-1
GENERAL DESCRIPTION 1-2
FEATURES AND CAPABILITIES 1-2
SPECIFICATIONS 1-3
Mechanical Specifications 1-3
Electrical Specifications 1-4
Operational Specifications 1-5
Environmental Operating Specifications 1-5
SITE PREPARATION AND PLANNING
SITE CONSIDERATIONS 2-1
USER INTERFACE CABLING 2-1
SYSTEM CONFIGURATION GUIDELINES 2-4
INSTALLATION
DTROl INSTALLATION PROCEDURES 3-1
RH2p CLOCK DESKEW PROCEDURE 3-1
RH20/CHANNEL CONTROL LOGIC DIAGNOSTICS 3-1
USER INTERFACE CABLING 3-2
GROUNDING 3-2
POWER UP UNIT 3-2
DEVICE NUMBER SELECTION 3-2
MAXIMUM TRANSFER RATE ADJUSTMENT 3-2
M5903 ENABLE SWITCHES 3-3
CHECKOUTAND ACCEPTANCE 3-3
OPERATION/PROGRAMMING
DTROl OPERATION .4-1
Single-Word Transfer -Write .4-1
Single-Word Transfer -Read .4-1
PROGRAMMING .4-2
Communication Between the DTROl and the KLIO-B, C, D
or EProcessor .4-2
m

CONTENTS (Cont)
Page
4.2.1.1 Loading DROl/DTROl External Registers 4-2
4.2.1.2 DATAO .4-2
4.2.1.3 DATAI .4-3
4.2.2 Programmable Registers in DROl-CL Channel Interface Unit .4-6
4.2.2.1 Control and Status 1Register (RHCSl) 4-6
4.2.2.2 Interface Status Register(RHlS)- REG 14-6
4.2.2.3 Input Buffer Register (RHIB)- REG 2.4-8
4.2.2.4 Attention Summary Register (RHAS)- REG4.4-8
4.2.2.5 User Function and Status Register (RHFS)- REG 54-10
4.2.2.6 Drive Type Roister (RHDT)- REG 64-10
4.2.2.7 Output Buffer Register (RHB)- REG 7..4-10
4.2.3 Link Operation 4-10
4.2.3.1 DR01-C/RH20 Registers Link Configuration 4-12
4.2.3.2 DROl-C/DRU-B Registers Link Configuration ...4-15
CHAPTER 5TECHNICAL DESCRIPTION
5.1 SYSTEM DESCRIPTION 5-1
5.2 DATA TRANSFERS 5-1
5.2.1 REGO (RHCSl) Control and Status Register Signal Flow 5-1
5.2.2 REG 1(RHIS) Interface Status Register Signal Flow 5-5
5.2.3 REG 2(RHIB) Input Buffer Register Signal Flow 5-9
5.2.4 REG 4(RHAS) Attention Summary Register Signal Flow 5-9
5.2.5 REG 5(RHFS) User Function and Status Register Signal Flow 5-9
5.2.6 REG 6(RHDT) Drive Type Register Signal Flow 5-13
5.2.7 REG 7(RHOB) Output Buffer Register Signal Flow 5-13
5.3 LINK OPERATION 5-14
CHAPTER 6PREVENTIVE MAINTENANCE
6.1 GENERAL 6-1
6.2 HIGH PERFORMANCE CHECKOUT 6-2
CHAPTER 7SERVICE
7.1 GENERAL 7-1
7.2 CORRECTIVE MAINTENANCE 7-1
APPENDIX ADTROl INSTALLATION CONSIDERATION
A.l POST INSTALLATION CONSIDERATIONS A-1
IV

CONTENTS (Cont)
Page
APPENDIX BLD»^KING PROCEDURE
B.l
B.2
APPENDIX C
C.l
C.1.1
c.l.
2
C.1.2.1
C.l.2.2
DROl/DRll-B LINKING PROCEDURE B-I
DROl/DROl LINKING PROCEDURE B-2
USER E^TERFACE SPEaFICATION
USER INPUT/OUTPUT SIGNALS C-1
Signals List C-1
Timing Considerations C-1
Read Operation C-I
Write Operation C-5
FIGURES
Figure No. Title Page
1-1
2-1
2-2
2-3
3-1
3-2
4-1
4-2
4-3
4-4
4-5
4-6
4-7
4-8
4-9
4-10
4-11
4-12
4-13
5-1
5-2
Possible DTROl Subsystem Configurations 1-1
DROl User Interface Connector Slot View Shown from Backplane 2-1
Module M9760-YA 2-5
DTROl Maximum and Minimum Configuration 2-6
Massbus Cabling 3-1
25 MHz KLIO-B, C, Dor ESystem SCLK Setting 3-3
Communications Between DTROl and KLlO-B, C, Dor EProcessor 4-4
DATAO External Register. 4-5
DATAI Bit Format 4-5
RHCSl(REGO)BitMap 4-7
RHIS (REG 1) Bit Map 4-7
RHIB(REG2)BitMap 4-9
RHAS(REG4)BitMap 4-9
RHFS (REG 5) Bit Map 4-11
RHOB (REG 7) Bit Map 4-11
RHIS(REGl)LinkA 4-13
RHFS (REG 5) Link A4-13
RHIS (REG 1) Link B4-16
RHFS (REG 5) Link B4-16
ATypical DTROl System 5-2
Communication Between DTROl and KLIO-B, C, Dor EProcessor 5-3

FIGURES
Figure No. Title Page
5-3 DTROl Subsystem Data How Block Diagram 5-4
5-4 REG O(RHCSl) Control and Status Register Circuit Block Diagram 5-5
5-5 REG 1(RHIS) Interface Status Register Circuit Block Diagram 5-6
5-6 DTROl Timing 5-7
5-7 Data Format 5-10
5-8 REG 2(RHIB) Input Buffer Register Circuit Block Diagram 5-10
5-9 REG 4(RHAS) Attention Summary-Register Qrcuit Block Diagram 5-1
1
5-10 REG 5(RHFS) User Function and Status Register Circuit Block Diagram 5-12
5-11 REG 6(RHDT) Drive Type Register Circuit Block Diagram 5-13
5-12 REG 7(RHOB) Output Buffer Register Circuit Block Diagram 5-13
5-13 DTROl Link Connectors 5-14
5-14 DTROl Back-to-Back Signal Connections 5-15
7-1 M8432 Buffer/Test Module Block Diagram 7-1
C-1 Read and Write Timing Diagrams C-4
TABLES
Table No. Title Page
1-1 Electrical Specifications 1-4
2-1 Interface Signal Pin Assignments 2-2
4-1 ATA Bit Status 4-10
5-1 DROl to DROl Signal Connections 5-16
5-2 DRll-Bto DROl Signal Connections 5-17
6-1 Left Half Switches -Standard Definition 6-1
6-2 Right Half Switches -Standard Definition 6-2
6-3 Command Data Commands 6-3
C-1 User Input Signals C-2
C-2 User Output Signals C-3
VI

CHAPTER 1
INTRODUCTION
1.1 PURPOSE AND USE
The DTROl is achannel port system which provides ageneral-purpose access to the KLIO-B, C, Dor
Emain memory unit via auser high-speed port interface.
The DTROl subsystem enables auser interface/device to perform high-speed block transfers to or
from the system's main memory unit via the mass storage bus and appropriate RH20 controller.
Although the maximum subsystem rate within ablock is one megabyte, the transfer rate is primarily
determined by the user interface. Therefore, an adjustment for limiting the maximum transfer rate of
the DROl has been provided so that it will not exceed the bandwidth of the system.
The DROl-C and DTROl subsystems can also be used to establish ahigh-speed interprocessor link
between aKLlO-B, C, Dor Eand another KLlO-B, C, Dor E, aPDP-1 1,or aPDP-1 1/70. (See Figure
1-1.)
INTERFACE
1
INTERFACE
2
INTERFACE
3
INTERFACE
4
8INTERFACES
MAXIMUM
USER DEVICE
DRUB UNIBUS
PDP-11
DR70A 11/70
DTROl KL10
Figure 1-1 Possible DTROl Subsystem Configurations
1-1

12 GENERAL DESCRIPTION
Communication and control between the DTROl subsystem and the host processor is implemented
with seven programmable registers located in each DROl-CL. Communication and control of the user
interface/device is implemented via 8status bits, 8user function bits, 4attention bits, and 1user error
bit along with 18 separate data in and out lines plus optional parity.
13 FEATURES AND CAPABILITIES
The DTROl provides the following features.
•Performs high-speed block transfers (block can be any size to the maximum amount of core in
the system) between main memory and user devices.
•Provides ahigh-speed channel interface with access to KLIO-B, C, Dor Emain memory unit.
•Establishes high-speed interprocessor links between separate computer systems as follows.
KLlO-B, C, Dor Eto KLlO-B, C, Dor E
KLlO-B, C, Dor Eto Unibus PDP-11 system
KLlO-B, C, Dor Eto PDP-1 1/70 system
•Currently provides an interface from any user device interfaced through adirect memory ac-
cess device interface (DRll-B) to aPDP-11 Unibus.
•Provides an interface expanded beyond aPDP-11 Unibus direct memory access interface
(DRll-B) with the following additional features.
Enables data input and output as either word or byte (switch selectable). Byte data is in the
low order bits on 8lines.
Provides optional parity checking for data transferred with the user device.
Provides for additional user-defined status and function bits.
•Amaximum of 8channel interfaces are available to user devices or computers.*
The user interface connects to dedicated slots in the DROl -CL interface unit. The user device currently
interfaced through the DRll-B to the Unibus can be connected to the DTROl subsystem with a
minimum of changes, since the physical signal pins out of these connector slots are almost identical.
In addition to the standard interface connector, asecond expanded interface connector slot is provided
in the DROl-CL unit to increase the flexibility of the user interface.
*For link configurations, DRll-Bs or DR70As are not supplied. They are mounted externally in aPDP-11 cabinet or
mounting box, not a part of the DTROl system.
1-2

1.4 SPEaFICATIONS
1.4.1 Mechanical Specifications
There are three configurations of DTROl Channel Interface Subsystems and two configurations of
DROl Channel Interfaces available. They are as follows.
DTROl-AA/AB
Description
Prerequisitef
Dimensions
Weight
DTROl-CA/CB
Description
Prerequisitef
Dimensions
H9502 cabinet containing power control, DROl mounting box
and DROl-CL logic plus RH20 option set. Contains space for
two additional DROl-CL options and cabinet space for two ad-
ditional DROl mounting boxes (either DTROl-CC/CD or
DROl-CA/CB).*
KLIO-B, C, Dor E
152 cm X76 cm X66 cm
(60 in X30 in X26 in)
204 kg (450 lb)
H950 cabinet containing power control, DROl mounting box,
and DROl-CL logic plus RH20 option set. Contains space for
two additional DROl-CL options and cabinet space for two ad-
ditional mounting boxes (either DTROl-CC/CD or DROl-
CA/CB).*
KLlO-B, C, Dor E
175 cm X48 cm X68 cm
(69 in X19 in X27 in)
Weight 159 kg (350 lb)
DTROl-CC/CD (Second System Box)
Description
Prerequisitesf
Dimensions
Weight
Mounting box containing DROl-CL logic plus RH20 option
set. Only one DTROl-CC/CD may be added to aDTROl
CA/CB, AA/AB. Contains space for two additional DROl CL
options.
KLIO-B, C, Dor Eand DTROl-CA/CB or AA/AB (space per-
mitting)
27 cm X48 cm X69 cm
(11 in X19 in X27 in)
50 kg (110 lb)
Only one DTROl-CC/CD mounting box may be added to aDTROl-CA/CB, AA/AB cabinet.
fSystem prerequisite requires the KLIO-B, C, Dor ECPU to be at revision level 10 or greater.
1-3

DROl-CA/CB
Description
Prerequisite
Dimensions
Weight
DROl mounting box containing DROl-CL logic with space for
two additional DROl-CL options.
DTROl-CA/CB or AA/AB
27 cm X48 cm X69 cm
(11 in X19 in X27 in)
50 kg (110 lb)
DROl-CL
Description
Prerequisites
Dimensions
Weight
Channel interface logic unit
DROl-CA/CB, or DTROl-CC/CD, or DTROl-CA/CB or
DTROl-AA/AB (space permitting)
42 cm X22 cm X6cm
(17 in X9in X3in)
8kg (18 lb)
L4.2 Electrical Specifications
Electrical characteristics are provided in Table 1-1.
1.43 Operational Specifications
The following are the operational characteristics of the DTROl.
Transfer Rate
Output levels
Input Levels
User Cable or Link Cable*
Host Cable*
Commands
1megabyte/second (max.) word mode
500 kilobytes/second (max.) byte mode
(mode is switch-selectable)
TTL, 30 unit loads max., high =logic 1
TTL, 8unit loads max., high =logic 1
9m(30 ft) max. from user device to DTROl channel interface
BC06S, 30 m(100 ft) max. from RH controller to DTR sub-
system
Read, Write, and Interface Clear (octal codes 71, 61, and 11
respectively only); all other codes are not valid.
•Only standard host 12 m(40 ft) and link 8m(25 ft) cables will be supplied with the system. If special length cables are
required, they must be specified at the time the system is ordered.
1-4

Table 1-1 Electrical Specifications
Configuration Voltage Current* Frequency Power BTU
DTROl-AA
DTROl-AB 115 Vac ±10% 240 Vac ±10% 5A
•2.5 A50/60 ±3 Hz
50/60 ±3 Hz 400 W
400 W1320 1320
DTROl-CA
DTROl-CB 115 Vac ±10% 240 Vac ±10% 5A
2.5 A50/60 ±3 Hz
50/60 ±3 Hz 400 W
400 W1320 1320
DTROl-CC
DTROl-CD 115 Vac ±10% 230 Vac ±10% 4A 2A 50/60 ±3 Hz
50/60 ±3 Hz 300 W
300 W990 990
DROl-CA
DROl-CB 115 Vac ±10%
230 Vac ±10% 4A
2A 50/60 ±3 Hz
50/60 ±3 Hz 300 W
300 W990
990
DROl-CL -f5Vdc
-15 Vdc 10 A
lA 65 W215
Power Connector: DTROl-CA uses NEMA L5-30P
DTROl-CB uses NEMA L6-20P
DTROl-AA uses NEMA L5-30P
DTROl-AB uses NEMA L6-20P
*These current values are estimated for the basic option configurations.
1.4.4 Environmoital Operating Specifications
The following are the environmental operating specifications of the DTROl.
Temperature
Humidity
Altitude
Atmosphere
Shocic
10 -40° C(50 -104° F) max.
Temperature change rate is 10° C(18° F) max. per hour.
10% to 90% (no condensation)
2km (8000 ft)
Noncorrosive
10 Gfor 10 ms
1-5

CHAPTER 2
SITE PREPARATION AND PLANNING
2.1 SITE CONSIDERATIONS
The basic system entry level unit is the DTROl, consisting of a DTROl cabinet, DROI-CL interface
and mounting box and RH20 controller. The DTROl cabinet can be located within 30 m(100 ft) of the
RH20 connected via BC06S cables. If space permits placing asecond system box (DTROl-CC/CD) in
the DTROl cabinet, the DTROl cabinet must be located within 30 m(100 ft) of each RH20 it is
connected to via BC06S cables.
The DROl-CA/CB expander interface box is provided for additional system expansion and is
mounted in the DTROl cabinet.
The DROl-CL is the basic channel interface composed of alogic system unit. It provides auser
interface access into the system. The DROl-CL can be mounted in either the DTROl or DROl-CA/CB
boxes. (See Paragraph 2.3 for further guidelines.) The DROl-CL is normally located as close as pos-
sible to the user interface (9 mor 30 ft maximum cable separation).
22 USER INTERFACE CABLING
The user interface is generally located external to the DTROl cabinet and is cabled to the DROl with
two M9760-YA modules or other suitable terminators. Acable from the user interface is normally
attached to the two M9760-YA modules which mount in the two double-height connector slots. As an
alternative, if the user interface is small enough, it can be located in the same cabinet with the DROl
and the two units may be connected directly with two BCllA cables. However, this configuration is
not generally recommended and the user interface must be powered separately. Figure 2-1 shows the
location of the two user interface connector slots in the DROl system unit.
SLOT
NUMBER
M5903(MB3) STANDARD INTERFACE
M9760-YA EXTENDED INTERFACE
M9760-YA
M5903 (MB2) M8432
USER INTERFACE AND TEST CONNECTORS
M8431 -YA
CONTROL LOGIC
M5903(MB1) LINK CONNECTOR 1
BC11-A LINK CONNECTOR 2
BC11-A
ZONE ABCDE F
MR-0887
Figure 2-1 DROl User Interface Connector Slot
View Shown From Backplane
2-1

Table 2-1 is alist of user interface signal pin assignments for each of the DROl connector slots.
Table 2-1 Interface Signal Pin Assignments
Signal
Source Lug
(See Note) Signal Slot Pin Zone Pin
TCC DATA 00 OUT HD04 SI BSI
TCC DATA 01 OUT HD04 Rl BRl
TCC DATA 02 OUT HD04 U2 B U2
TCC DATA 03 OUT HD04 PI BPI
TCC DATA 04 OUT HD04 T2 BT2
TCC DATA 05 OUT HD04 Nl BNl
TCC DATA 06 OUT HD04 S2 BS2
TCC DATA 07 OUT H D04 Ml BMl
TCC DATA 08 OUT HD04 R2 BR2
TCC DATA 09 OUT H D04 LI BLI
TCC DATA 10 OUT HD04 P2 BP2
TCC DATA 11 OUT HD04 Kl B Kl
TCC DATA 12 OUT HD04 N2 BN2
TCC DATA 13 OUT HD04 M2 BM2
TCC DATA 14 OUT HD04 L2 BL2
TCC DATA 15 OUT HD04 K2 BK2
USA DATA 00 IN HC04 CI ACI
USA DATA 01 IN HC04 Dl ADl
USA DATA 02 IN HC04 D2 AD2
USA DATA 03 IN HC04 El AEl
USA DATA 04 IN HC04 E2 AE2
USA DATA 05 IN HC04 Fl AFl
USA DATA 06 IN HC04 F2 AF2
USA DATA 07 IN HC04 HI AHI
USA DATA 08 IN HC04 H2 AH2
USA DATA 09 IN HC04 Jl AJl
USA DATA 10 IN HC04 J2 AJ2
USA DATA 11 IN HC04 Kl AKl
USA DATA 12 IN HC04 K2 AK2
USA DATA 13 IN HC04 L2 AL2
USA DATA 14 IN HC04 M2 AM2
USA DATA 15 IN HC04 N2 AN2
USA CYCLE REQUEST AC04 Al AAl
USA CYCLE REQUEST BD04 Ul BUl
USA DEVICE STATUS 00 C04 P2 AP2
USA DEVICE STATUS 01 C04 LI ALI
USA DEVICE SIATUS 02 C04 R2 AR2
USB DEVICE STATUS 03 E04 N2 AN2
USB DEVICE STATUS 04 E04 P2 AP2
USB DEVICE STATUS 05 E04 R2 AR2
USB DEVICE STATUS 06 E04 D2 AD2
USB DEVICE STATUS 07 E04 T2 AT2
TCB FUNCTION BIT 00VD04 E2 BE2
TCB FUNCTION BIT 01 '^ D04 J2 BJ2
TCB FUNCTION BIT 02 D04 HI BHI
TCB FUNCTION BIT 03 F04 H2 BH2
TCB FUNCTION BIT 04 F04 N2 BN2
TCB FUNCTION BIT 05 F04 K2 BK2
TCB FUNCTION BIT 06 F04 L2 BL2
TCB FUNCTION BIT 07 F04 P2 BP2
DTC READY HD04 Jl BJl
2-2

Table 2-1 Interface Signal Pin Assignments (Cont)
Signal Lug
Source Signal Slot Pin Zone Pin
FDC GOH 'D04 VI BVI
TCC READ H'D04 D2 BD2
TCC END CYCLER C04 Bl ABl
USA ERROR HC04 Ml AMl
DTC BUSYH C04 S2 AS2
TCC INITH C04 U2 AU2
USB ATTN BIT 00 HE04 E2 AE2
USB ATTN BIT 01 HE04 HI AHI
USB ArrNBIT02H E04 Jl AJl
USB AHNBIT 03 HE04 Kl AKl
USB DATA 16 IN HE04 Al AAl
USB DATA 17 IN HE04 Fl AFl
USB DPA LO IN HE04 CI ACI
USB DPA HI IN HE04 Dl ADl
TCB DATA 16 OUT HE04 Bl ABl
TCB DATA 17 OUT HF04 HI BHI
TCB OUT PARITY HI F04 Jl BJl
TCB OUT PARITY LO F04 Kl B Kl
USB WORD MODE HE04 LI ALI
USB INHIBIT INPUT PARITY HE04 El AEl
ISR AC LO HF04 S2 BS2
CPF +3 volts E04 Ul AUl
Reserved for Link
Do not use:
C04R1
C04V1
C04T2
D04F1
D04F2
D04H2
E04F2
E04L2
E04L2
B04S2
E04U2
NOTE
Since the DROl interface does not contain any type
of word counter, it must rely on the internal channel
word count of the KLIO-B, C, Dor Eto indicate
transfer end. This causes some delay to exist between
the last word transferred and the WCOV in the inter-
nal diannel signalling transfer end and results in one
or more additional END CYCLEpulses to the user's
into'face.
The user's interface should be designed to prevent a
malfunction from occurring due to fliese additional
pulses.
I I I.I
Note: Signal
Source
TCC
USA
USB
TCB
DTC
FDC
ISR
CPF
Drawing Referenced
M8432-0-1 sheets of
5
DRO1-0-03 sheet 1of 2
DROl-0-04 sheet 1of 1
M8432-0-1 sheet 4of 5
DROl-0-03 sheet 1of 2 and DTROl-0-2
DROl-0-03 sheet 1of 2 and DTROl-0-2
M8431.YA-1 sheet 8 of 1,1
M8431-YA-1 sheet4ofll
2-3

All output signals are driven with 7437 drivers. These drivers can sink 60 mA in the output low state
and can source 1.5 mA in the output high state. This is equivalent to afan-out of approximately 30 unit
loads.
All input signals are received by 7414 Schmitt trigger receivers for noise immunity. The signal inputs
are terminated at the receiver input with a180 ohm resistor to +5 Vand a390 ohm resistor to ground
on the M9760-YA module. (See Figure 2-2.) This termination requires adriver in the user interface
capable of sinking at least 25 mA. Adriver such as the 7437 or 74H40 will satisfy this requirement. If
the use of lower powered drivers is desired, the terminators may be removed from the M9760-YA
module. However, it is not recommended to use lower power drivers for cable lengths greater than 1.5
m(5 ft).
2.3 SYSTEM CONFIGURATION GUIDELINES
Figure 2-3 provides agraphic description of the system's expansion capability by providing the system
minimum and maximum configurations. The maximum configuration rules are listed below.
1. Eight DROl-CLs per Massbus (RH20)
2. Any RH20 option set used by DROl-CLs cannot be shared with other devices.
3. One Massbus per DROl mounting box
4. Two Massbuses per DTROl cabinet
5. Three DROl-CLs per DROl mounting box
6. Three DROl mounting boxes per cabinet
7. One additional (second) DROl system box per DTROl cabinet (DTROl-CC/CD). If asec-
ond DROl system box is placed in the DTROl cabinet, the maximum configuration per
cabinet is:
Massbus no. 1=3DROl-CLs
Massbus no. 2=6DROl-CLs.
2-4

^IVI9760-YA-1 ^^
S2 T2
GOG
R2 OOU2
GOOG
P2 OOui
GOOG
R1 OOVI
GO OG
N2 OA1
GO OG
M2 OB1
GO G
L2 OCI
GO OG
K2 OOPI
GO G
J2 ON1
GO OG
H2 OF1
GO OG
F2 OHI
GO G
E2 OOJi
GO OG
SI O O K1
GO OG
D2 OOLI
GO OG
OMl
G
k
U2 OD2
GO OG
T2 OE2
GO OG
S2 OOF2
GO OG
R2 OH2
GO OG
P2 OJ2
GO OG
N2 OK2
GO OG
VI OOA1
GO OG
UI OOB1
GO OG
IVI2 OCI
GO OG
L2 OD1
GO OG
Ml OOEl
GO OG
LIO OJ1
GO OG
K1 OHI
GO OG
OF1
OG
•ZONEB- ZONE A-
Figure 2-2 Module M9760-YA
2-5

RH20 MASSBUS jMOUNTING BOX j
DR01-CL
MAXIMUM EXPANSION
FOR ONE MASSBUS IS
EIGHT DR01-CLS ON
ONE MASSBUS.
RH20 MASSBUS
RH20
DTR01 MINIMUM CONFIGURATION
MASSBUS
MOUNTING BOX
DR01-CL
DR01-CU
DR01-CL3
MOUNTING BOX
DROI-CL4
DROI-CLp
DR01-CU
IMOUNTING BOX
DROI-CL7
DROI-CLg
DROI-CLg
DTR01 MAXIMUM CONFIGURATION
Figure 2-3 DTROl Maximum and Minimum Configuration
2-6

CHAPTER 3
INSTALLATION
3.1 DTROl INSTALLATION PROCEDURES
Verify that the KLIO-B, C, Dor ECPU in the system is at revision level 10 before proceeding with the
installation. Observe the CPU revision sticker on the module enclosure door on the CPU logic.
NOTE
DO NOT proceed with the DTROl installation if the
KLlO-B, C, Dor ECPU is not at machine level 10.
Install the RH20 option module set into the next available channel backplane slot or another slot if
preferred. Refer to the RH20 Massbus Controller Unit Description (EK-RH20-UD) and/or KLIO Sys-
tem Installation Manual.
3.2 RH20 CLOCK DESKEW PROCEDURE
Perform the RH20 clock deskew procedure for the RH20 being installed. (Refer to the KLIO Mainte-
nance Handbook EK-KLIO-HB.)
3J RH20/CHANNEL CONTROL LOGIC DIAGNOSTICS
Run the following RH20/Channel Control Logic Diagnostics. Refer to diagnostic listing fiche for
program and error information.
DGKBD.A11
DGKBE.All
DGRHB.AIO
Version 0.10 (or later)
Version 0.10 (or later)
Version 0.11 (or later)
Upon successfully running the diagnostics above, connect the DTROl cabinet/DROl-C logic to the
RH20 with the supplied BC06S-XX cable. (See Figure 3-1.) Jumper Wl on each H870 (Massbus
terminal pack) must be cut for the proper operation of the DROl. The total length of the Massbus
cable should not exceed 30 m(100 ft) with BC06S round cable from the CPU.
KLIO BC06S
DTROl CABINET
USER
INTERFACE
CABLE
USER
LOGIC
CONNEC-
TOR
PANEL
BC06R
DROlRH20 BC06R
BC06R
Figure 3-1 Massbus Cabling
3-1

3.4 USER INTERFACE CABLING
The user interface is cabled to the DROl with the two M9760-YA modules. Acable from the user
interface is normally attached to the two M9760-YA modules which mount in the two double-height
connector slots.
3.5 GROUNDING
In addition to the ground wires in the user interface cable, the DROl should be grounded to the user
interface through a separate cable. This ground strap provides alow resistance path to ground. Also,
the DROl and the Massbus controller should share acommon ground. Using the supplied ground
cable, connect the DTROl cabinet to the host system ground.
3.6 POWER UP UNIT
Plug the unit into the appropriate ac outlet and power up the DTROl cabinet. Check all logic voltages.
+5 V±0.25 V
-15 V± 0.5 V
3.7 DEVICE NUMBER SELECTION
Dual in-line package (DIP) switches, SWl-1, SWl-2, SWl-3 on the DROl control board (M8431-YA)
select the device number of the DROl on the Massbus. (See Table 2-1.) (Switch in the ON position =0;
SWl-1 is LSB; SWl-3 is MSB.) The rocker switches represent an octal number from to 7. The DROl
is shipped with the switches set for unit 7. Switch SWl-7 indicates byte mode when ON and word mode
when OFF. Switch SWl-8 indicates inhibit input parity when ON and enable input parity when OFF.
3.8 MAXIMUM TRANSFER RATE ADJUSTMENT
The DROl is shipped from the factory with its maximum rate set to 3.4 jus per 36-bit word. This is
equivalent to ahigh-speed disk such as the RS04. The maximum transfer rate may be increased or
decreased as required.
Verify that the sync clock (SCLK) timing is set up properly for the KLIO-B, C, Dor Eversion to which
it is connected. Using Test 6of the DFDRA diagnostic and a1-word transfer, monitor pin D02M2
with an oscilloscope on the DROl-CL backplane. For a25 MHz* KLlO-B, C, Dor ECPU the
maximum settings are as follows.
SCLK width =800 ns
SCLK period =1.7 ^s
The SCLK width adjustment potentiometer on the M8431-YA module is R3 located front/bottom.
The SCLK period potentiometer is R6 located rear/top. Slot Aof the module is at the top; Slot Fis at
the bottom. It may be necessary to limit the maximum transfer rate of the DROl so that it does not
exceed the bandwidth of the system. On heavily loaded systems, problems such as data late errors on
other system devices or in the DRO 1may occur during peak periods of system operation if the speed is
not limited.
If the speed must be limited, first determine the maximum transfer rate allowable.
NOTE
Determining the available bandwidtli to the DROl
can be a very complex system problem requiring a
comprehensive Itnowledge of the system architecture.
If the system bandwidth is not extremely critical, an
estimate of the available bandwidth may suffice;
however, in critically loaded systems, customers
should have the system bandwidth analyzed by
DIGITAL personnel.
*For a30 MHz KLIO-B, C, Dor Esystem the same settings are used but the period may be shortened with approval ofthe
factory.
3-2