HP 30240A Manual

HP 3000 Computer Systems
HP 30240A
OfficeShare LAN/3000 Link/
Local Area Network Interface Controller
(lANIC)
Installation and Service Manual
Flill HEWLETT
~~ PACKARD
Hewlett-Packard Company
Roseville Networks Division
8000 Foothills Boulevard
Roseville,
California
Update 1(May 1987)
ManualPartN~ 30240-90001
E1185
Printed in U. S. A
November
1985

NOTICE
The
information contained in this document is subject to change without notice.
HEWLETT-PACKARD MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS
MATERIAL, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF
MERCHANTABILITY
AND FITNESS FOR APARTICULAR PURPOSE. Hewlett-Packard shall not
be liable for errors contained herein or for incidental or consequential damages in connection with the
furnishing, performance or use of this material.
Hewlett-Packard assumes no responsibility for the use or reliability of its software on equipment that
is not furnished by Hewlett-Packard.
This
document contains proprietary information which is protected by copyright. All rights are
reserved. No part of this document may be photocopied, reproduced or translated to another language
without the prior written consent of Hewlett-Packard Company_
Copyright ©1985, 1987 by
HEWLETT-PACKARD COMPANY

PRINTING HISTORY
The Printing History below identifies the Edition of this Manual and any Updates that are included.
Periodically, update packages are distributed which contain replacement pages to be merged into
the
manual, including an updated copy of this Printing History page. Also, the update may contain write-in
instructions.
Each reprinting of this manual will incorporate all past updates; however, no new information will be
added. Thus, the reprinted copy will be identical in content to prior printings of
the same edition with
the user-inserted update information. New editions of this manual will contain new information, as well
as updates.
First Edition
Update 1
.. November 1985
...... May 1987
iii

LIST OF EFFECTIVE PAGES
The List of Effective Pages gives the date of the most recent version of each page in the manual. To
verify
that your manual contains the most current information, check the dates printed at the bottom of
each page
with those listed below. The date on the bottom of each page reflects the edition or subsequent
update in which
that page was printed.
Effective Pages Date
All. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. Nov 1985
2- 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . May 1987
A-2/ A-3 May 1987
v

11/85
vi
CONTENTS
Section 1
GENERAL INFORMATION
Introduction '
1-1
General Description. ........................................ 1- 1
Equipment Supplied 1-3
System Interface 1-4
Link Address ...........................................1- 5
Specifications 1- 5
Section 2
INSTALLATION
Current Requirements 2-1
Channel Address Switch 2-1
Cables 2-3
Installing the LANIC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Start Up 2- 5
Reshipment 2-6
Section 3
PRINCIPLES OF
OPERATION
LAN Interface Controller (LANIC) 3-1
Host to LANIC Communication 3-1
LANIC MPU and Firmware 3-3
Local Communications Controller 3- 3
Direct Memory Access .....................................3- 3
Firmware Download and Configuration 3-3
Firmware Download 3- 3
Setting Station Address 3- 3
Queue Initialization 3-4
Transmit Operation 3-4
Types of Packets Transmitted 3-4
Transmit Buffer Management. 3-4
Queuing of Transmit Buffers 3-4
Transmit Operation Example 3-4
Receive Operation 3-4
Types of Packets Received 3-4
Receive Buffer Management 3- 5
Queuing of Received Packets 3- 5
Receiver Blind Spots 3- 5
Receive Operation Example ; 3-5

CONTENTS (continued) I
Error Management. 3-5
Self-Test Operation 3-6
System Interrupt 3-6
SINTRO Self-Test Interrupt 3-6
SINTR1 LANIC Interrupt 3-6
Interactive Command Completion 3-7
Interactive Command Acknowledgement. 3-7
Batch Command Completion 3-8
Fatal Error Response 3- 8
LANIC Resets. ..........................................3-8
Power-On Reset 3-9
Hard Reset 3-9
Soft Reset ...........................................3-9
Z-80 Reset 3-10
Power-Fail Warn 3-10
Self-Test 3-10
Manually Initiated Self-Test. 3-10
Remotely Initiated Self-Test 3-10
Idle Self -Test 3-10
Visual Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3- 10
Attachment Unit Interface (AUI) 3-10
MAU Power Control Circuit. ..............................3 -12
LED's 3-12
DO LED Pair 3-15
CL LED Pair 3-16
CR LED Pair " 3-16
H through Nand *LED's. ................................3 -16
TX, RX, MN, DL, RO, Q, and IT LED's ........................3 -16
Section 4
MAINTENANCE
Repair Philosophy
~ ~ 4-1
Self -Test ~ 4-1
Appendix A
CONFIGURATION INFORMATION
Configuration Dialog. ....................................
.. A-1
vii
11/85

SAFETY CONSIDERATIONS I
SAFETY SYMBOLS
Instruction manual symbol: the product
will be marked with this symbol when
it is
necessary for the user to ref er to the
instruction manual in order to protect the
product against damage.
GENERAL .. This product
documentation must
be
familiarization with safety
instructions before operation.
and related
reviewed for
markings and
J CAUTION IThe CAUTION sign
denotes ahazard.
It calls
attention to an operating
procedure, practice,
or the
like, which, if not correctly
performed
or adhered to,
could result
in damage to or
destruction of part or all of
the product. Do not proceed
beyond aCAUTION sign
until
the indicated conditions are
fully understood and met.
I CAUTION I
ST A TIC SENSITIVE DEVICES
.WARNING_
viii
Indicates hazardous voltages.
Indicates
earth (ground) terminal
(sometimes used in manual to indicate
circuit common connected to grounded
chassis).
The WARNING sign
denotes ahazard.
It calls
attention to aprocedure,
practice, or the like, which,
if
not correctly performed or
adhered to, could result in
injury. Do not proceed
beyond aWARNING sign
until
the indicated conditions
are fully understood and met.
When any two materials make contact,
their surf aces are crushed on the atomic
level and electrons pass back and
forth
between the objects. On separation, one
surface comes away
with excess electrons
(negatively charged) while
the other is
electron deficient (positively charged). The
level of charge
that is developed depends on
the type of material. Insulators can easily
build up charges in excess
of 20,000 volts.
Aperson working
at abench or walking
across afloor can build
up acharge of
many thousands of volts. The amount of
static voltage developed depends on
the
rate of generation of the charge and the
capacitance of the body holding the charge.
If the discharge happens to go through a
semiconductor device and the transient
current pulse is not effectively diverted by
protection circuitry,
the resulting current
flow through the device can raise the
temperature of internal junctions to their
melting points. MOS structures are also
susceptible to dielectric damage due to high
fields.

The resulting damage can range from
complete destruction to latent degradation.
Small geometry semiconductor devices are
especially susceptible to damage by static
discharge.
The LANIC card
is shipped in a
transparentstatic shielding bag. The card
should be kept
in this bag at all times until
it is installed in the system. Save this bag
for storing or transporting the card. When
installing
the card in the system) do not
touch any components. Hold the card by
its edges.
WARNING
SAFETY EARTH GROUND - The
computer on which this product is installed
is asafety class Iproduct and is provided
with aprotective
earthing terminal. An
un interruptible safety ground must be
provided from
the main source to the
product input wiring terminals, power
cord,
or supplied power cord set.
Whenever
it is likely that the protection
has been impaired,
or before the power
cord
is removed from the wall receptacle,
the AUI cable connector must be removed
from the junction panel and insulated
from exposed conductive surfaces.
WARNING
At infrequent intervals, exposed metal
surfaces
of the AUI cable may be subject
to
transient hazardous voltages due to
strong electrical disturbances (such as
lightning
or disturbances in the electrical
utilities power grid) in
the area
surrounding the network to which this
product is connected. These surfaces
should be handled with caution when
the
AUI cable is not connected toa properly
grounded HP
3000 Computer System.
SERVICING
WARNING
Any servicing, adjustment, maintenance, or
repair of assemblies within the HP 3000
cabinet must be performed only by
qualified personnel.
WARNING
This product is not designed for
attachment to anetwork serving an area
which contains multiple unconnected
power system safety grounds. Before
installing this product, verify
that all of
the power system safety grounds
are
securely interconnected in the area served
by
the local network.
WARNING
Do not connect this product to an
ungrounded network coaxial cable.
ix

_G_E_N_E_R_A_L_IN_F_O_R_MA_T_I_O_N I~
INTRODUCTION
This manual presents installation and service instructions for the HP 30240A OfficeShare LAN/3000
Link Local Area Network Interface Controller. This section has general information about the HP
30240A OfficeShare
LAN/3000 link product, and includes adescription and ·specifications.
GENERAL DESCRIPTION
The HP 30240A OfficeShare LAN/3000 link is an implementation of the IEEE 802.2 and IEEE 802.3
Local Area Network (LAN) standards and
is used in HP 3000 computer systems. The HP 30240A allows
the HP 3000 to communicate with other HP 3000's over an IEEE 802.3, O. 18-inch baseband Local Area
Network (LAN).
The IEEE 802.3 Local Area Networks (LAN's) consist
of three major elements: acoaxial cable
transmission medium, units to access this medium (Thin Medium
Attachment Units, or Thin MAU's), and
controllers. For
the HP 30240A, the controller is the Local Area Network Interface Controller (LANIC).
The HP 30240A OfficeShare
LAN/3000 link is available for use with the HP 3000 Series 39, 40, and
42; and the HP 3000 Series 44, 48 64, and 68. The LANIC and Thin MAU, are the same for an HP 3000
Series; however, two
different LANIC cables are offered (see the paragraph "Equipment Supplied").
The
LAN/3000 link functions as an intelligent Direct Memory Access (DMA) channel which
communicates with the host system via
the system I/O backplane. Local intelligent control is provided by
amicroprocessor and firmware on
the LAN Interface Controller (LANIC). An 8-bit Z-80B
microprocessor (MPU) on the LANIC handles all the LAN/3000-to-host communication and performs
many
link-level operations independently of the host. Atype 82586 Local Communications Controller
(LCC) on
the LANIC performs high-speed serial operations, packet address checking, network contention
control, packet formatting,
and Cyclic Redundancy Check (CRe) generation and checking. The LCC is
controlled by the Z-80B through local (card -resident) memory.
11/85
1-1

General Information
The LANIC, besides controlling
the other LAN elements, also is the interface with the Local Area
Network to the computer system. Atypical Local Area Network
is shown in Figure 1-1.
3000/48 3000/68 3000/68
ll
ThinLAN cable
terminator
ThinMAU
l
3000/48 3000/68 3000/68
Figure 1-1. Typical Local Area Network (LAN)
11/85
1-2

General Inf ormation
Equipment Supplied
Standard equipment supplied with the HP 30240A is listed below:
Standard Equipment
Thin Medium Attachment Unit Assembly ...•....•..... 28641-60001
BNC "T" Connnector ...............•..•.............. 1250-0781
BNC "T" Boot....................................... 1252-1154
ThinMAU Installation Manual 28641-90001
LAN/3000
Installation and Service Manual 30240-90001
In addition, one of the following options (depending on the HP 3000 type) adds the following equipment:
Opt~on 300 for the HP 3000 Series 39, 40, and 42
Series 4X/6X LAN Interface Controller (LANIC card) 30242-60001
Series 39/40/42 LANIC Internal Cable ..•........... 30241-60002
Option 400 for the HP 3000 Series 44 and 48
Series 4X/6X LAN Interface Controller (LANIC card) 30242-60001
Series 44/48 LANIC Internal Cable 30241-60003
Option 500 for the HP 3000 Series 64 and 68
Series 4X/6X LAN Interface Controller (LANIC card) 30242-60001
Series 64/68 LANIC Internal Cable 30241-60003
Option 241 is specified if the Thin MAU is not desired. Option 241 deletes the following standard
equipment:
Option 241
Deletes
Thin Medium Attachment Unit Assembly 28641-60001
BNC "T" Connnecto r. .............................. .. 1250-0781
BNC 11.~!1 Boot....................................... 1252-1154
ThinMAU Installation Manual ......•......•.......... 28641-90001
11/85
1-3

General Information
System Interface
As noted previously, the LAN/3000 link interfaces to the host computer system through the LAN
Interface Controller (LANIC). The LANIC functions
as an I/O channel and fits into the backplane of HP
3000 Series 39, 40, 42, 44,
48, 64, and 68 computers.
Figure
1-2 shows how the LANIC connects to aSeries 39, 40, 42, 44, or 48 computer system. The CPU,
Memory, Asynchronous
Data Communications Controller (ADCC) or Advanced Terminal Processor (ATP),
General
Input/Output Controller (GIC), Intelligent Network Processor (lNP), and LANIC all physically fit
into the backplane (the backplane is called the Intermodule Bus (1MB)).
INTERMODULE BUS
TERMINALS
AUI
Figure 1-2. HP 3000 Series 39 through 48 System Architecture
The architecture for the Series 64 and 68 computers
is significantly different than the other HP 3000
series,
as shown in figure 1- 3. The CPU and memory fit into the Central System Bus (CSB), and one or
more
IMBs connect to the CSB via Common Bus Interfaces (CBI's) and 1MB Interfaces (lMBI's). I/O DMA
operations do not
go directly to memory, but are handled by the 1MB!.
11/85
1-4

General Information
AUI
CENTRAl SYSTEM BUS
Figure 1-3. HP 3000 Series 64 and 68 System Architecture
Link Address
The last six hexadecimal digits of the link level address for the LANIC are indicated on the board
stiffener
to the left of the channel address switch (CHAN ADDR) on alabel titled "Station Address". The
full address
is 08 00 09 XX XX XX, where XX XX XX represents the value on the label.
SPECIFICATIONS
Table 1-1 lists the specifications of the HP 30240A LAN/30DO link.
11/85
1-5

General Information
Table 1-1. Specifications
FEATURES
Compatible with IEEE 802.3 Standard for access to 0.18-inch
diameter baseband coaxial cable
Carrier-Sense Multiple Access with Collision Detection (CSMA/CD)
protocol controls network access using no master node
On-board node self-test that checks the operation of the node
hardware including the Thin MAU
Every node on the network cable is accessiblG by any other node
on
the network with no store and forward
10 megabit-per-second hardware data transfer rate
Each 185-meter cable segment supports up to 30 nodes
VLSI implementation for reliability and lower cost
Microprocessor off-loads host computer and gathers network
statistics
ELECTRICAL CHARACTERISTICS
Data Rate:
Transmitted in bursts of 10 Mbits/sec
Maximum Coaxial Cable Length:
185 meters for one segment
Maximum Distance from Nod~':') to Network Trunk:
One meter maximum for external AUI cable.
Required Distance Between T's on Coaxial Cable Trunk:
Each Thin MAU must be located on the coaxial cable
at least 0.5 meter apart.
11/85
1-6

Table 1-1. Specifications (Continued)
LANIC at AUI Connector:
AUI signalling conforms to IEEE 802.3
CO not driven
VP +12V +/-6% @0.5A; overcurrent protected @1.2A maximum
Interframe spacing = 9.6 usec minimum
Thin MAU at AUI Connector:
AUI signalling conforms to IEEE 802.3
CO terminated but unused
Operating voltage: 8.0V to 13.50V at 360mA maximum
ThinMAU at Coaxial Cable:
Coax signalling compatible with IEEE 802.3 recommended
signalling levels
Receiver based collision detection
Compatible with any coaxial cable meeting IEEE 802.3
type 10, base 2 physical specifications
General Information
11/85
1-7

General Information
Table 1-1. Specifications (Continued)
LANIC PHYSICAL CHARACTERISTICS
Size:
Weight:
331 mm long by 285 mm wide by 22.5 mm thick
(13.04 by 11.2 by 0.89 inches)
739 grams (26 ounces)
LANIC POWER REQUIREMENTS
Voltage
+5V +j-0.5V
+12V +j-0.6V
Current
4.7A
0.5A
Power
Dissipation
23.5W
6.0W (Thin MAU attached)
THIN MAU PHYSICAL CHARACTERISTICS
Size:
Weight:
152
mm long by 114 mm wide by 25 mm thick
( 6.00 by 4.50 by 1.00 inches)
0.90 kg (2.0 Ibs)
THIN MAU POWER REQUIREMENTS
8.0 to 13.50 volts
0.360 ampere maximum
ENVIRONMENTAL SPECIFICATIONS
Complete environmental specifications are in the
LAN Cable and Accessories Installation Manual
(Manual
part number 5955-7680).
11/85
1-8

I....--IN_S_TA_L_L_A_T_IO_N I~
INTRODUCTION
This section contains information on installing and verifying proper operation of the LANIC card, part
number 30242-60001. Information on installing the ThinMAU is in the LAN Cable and Accessories
Installation Manual, part number 5955-7680.
ICAUTION I
SOME OF THE COMPONENTS USED IN THIS PRODUCT ARE
SUSCEPTIBLE TO DAMAGE BY STATIC DISCHARGE. REFER TO THE
SAFETY CONSIDERATIONS INFORMATION AT THE FRONT OF THIS
MANUAL BEFORE HANDLING THE CARD.
CURRENT REQUIREMENTS
The LANIC circuit card obtains its operating voltages from the host computer. The current requirements
of the card are listed in the power requirements entry of table 1-1.
All HP 3000 Computer systems can supply adequate current to accommodate the LANIC card without
the need for any power supply modification. However, it is possible that the +12V supply in the HP 3000
system
may be set to alow voltage such that the VP lead on the AUI cable may not provide the minimum
voltage specified by IEEE 802.3 (+11. 28V). If MAU replacement does not correct an apparent MAD
problem,
the VP voltage should be checked. This is done by connecting an accurate voltmeter between
the +12 and GND test points near the LED's on the LANIC card. This must be done when the MAU is
connected to the LANIC and MAU power is on (as indicated by the VP LED). MAU power can be turned
on by executing the LANIC self-test. Consult the HP 3000 CE Handbook for instructions on adjusting
the +12V power on the HP 3000.
CHANNEL ADDRESS SWITCH
For the LANIC card, the channel address is set by a CHAN ADDR rotary switch, SW2, located on the
front edge of the card. See figure 2-1 for the location of SW2. SW2 can be set to any value between 1
and 15, however, ensure that no GICs, ADCCs, or SIBs are set to the same channel number. While it is
physically possible to set the address switch to values 1 to 15, you should exercise some caution in your
choice of
channel number. For instance, in all HP machines, it is assumed that the console has a DRT of
8. Therefore, choosing to make the LANIC channel address of 1 in a4X, SX, or in the first 1MB of a
6X/7X machine will cause problems. Once you have set SW2 to avalue, jot the value down. The
formula used to calculate the DRT number from the hardware address is: (IMB# x128) + (channel# x 8)
+device #.
U pda te 1(May 1987)
2-1

Installation
P1
P2 P3 P4
ABC 0 E F G H I JK L ~ N.. LAN Ie TEST
0..1 dI8I5 Ix xZ ..J 0 I- (RESET)
>W..JW..JW-ll-lX:::l!OQ::O!::<n
000000000000000 ~
J1
J2
11/85
2-2
Figure 2-1. LANIC Switch and LED Locations