HP 27130A Product manual

HP 27130A
EIGHT -CHANNEL MULTIPLEXER
(MUX)
HEWLETT-PACKARD COMPANY
Roseville Networks Division
8000 Foothills Boulevard
Roseville,
California 95678
Technical Reference Manual
Flin- HEWLETT
~I!.I PACKARD
Card Assembly: 5061-4929
Date Code: A-2301
Manual Part No.2 7132-90006
Printed in U.S.A.
June 1983

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
informa-
tion will be added. Thus, the reprinted copy will be identical in contenf.to prior printings
of
the same edition with its user-inserted update information. New editions of this
manual
will contain new information, as well as updates.
First Edition
................ June 1983
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 A PARTICULAR PURPOSE.
Hewlett-Packard shall not be liable for errors contained herein or for incidental or con-
sequential damages in connection with the furnishing, performance, or use of this material.
This document contains proprietary information which
is protected by copyright. All
rights are reserved. No
part of this document may be photocopied or reproduced without
the prior
written consent of Hewlett-Packard Company.
Copyright (c) 1983 by HEWLETT-PACKARD COMPANY
ii

CONTENTS
Section I Page
GENERAL INFORMATION
PhY5icai De5cription .•.•..•••.••.••••••.•••••.••.•••••.•••...••.. 1-1
Functional Description ....• ·.;, •.•..•........•..•..............•... 1-1
Equipment Supplied ............................................... 1-3
Identification ................................................... 1-3
The Product .... ~ ............................................... 1-3
Printed Circuit Card ....••...•.•.••••....•..••...•.•.••.•.•••.. 1-3
fw1a.nua15 ..••.•.•••••...••••••.••.••••••.••••••••••••••••.••••••• 1-4
Specifications ................................................... 1-4
Section II
INSTALLATION
Page
Determining
Current Requirements .•.•.•...••••.••.•••..••••••.•... 2-1
Firmware
(EPROM> In5tallation ....•••.•.•.••••.•.••..•.••..••.•... 2-1
Jumpe r5 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 2-3
Memory Configuration Jumper •.•...•...•...•...........••........ 2-3
Signature AnalY5i5 Jumper ..•.......•••..•.•.........•.•..•.••.. 2-3
liD Channel Interface ....•...•..•.•.••..•........•........•...... 2-5
Peripheral Device Interface ..•.••.••••..•.•...................... 2-5
In5talling the MUX .•....•••..•.•......•...•.•....•...•..•.•..•.. 2-12
Checkout ........................................................ 2-13
Reshipment ...................... a a .• a ••• a .• a a .•••••••••••••••• a •••• 2-14
Section III
Page
PRINCIPLES OF OPERATION
Functional de5cription ......•.•••..••.•...............•......•... 3-1
Sys t em C1 oc k5 .•.•••..••••••••••••••••••••••.•••••••.•••.••••••• 3- 3
Memory Addre55 Space ....•.......••.••••••••.••...........•.•... 3-3
110 Address Space ............... e ••••••••••• e .•••••••••••••••••• 3-6
Z-80B Microproc·e550r CPU ...............•....................... 3-6
Z-80 510/2 (Serial liD Controller> .•.•.••••..•..•.....•.••.•... 3-6
CTC (Counter Timer Circuit .....•••.• ~ •.•.••.•.•.•..•...••.••.. 3-19
Interfac·ing to the BIC .••..•.....•••.•.•••..••••.•.•..••.•••.. 3-19
Memory Interface Circuit (MIC) .•••.•.•.•.•..•••.•..•..•.••.•.. 3-24
Regi5 ter 0 - MI C Conf igurat ion •...•....•......•..•....•..•.. 3-24
Regi5ter 1 - DMA B Upper Byte of Memory Addre55 ....••....•.. 3-24
Regi5ter 2 - DMA Lower Byte of Memory Addre55 .......•.••.•.. 3-24
Regi5ter 3 - DMA B Configuration .•.•.•.••.••.....•..•....•.. 3-25
Regi5ter 4 - Lower Byte of Tran5fer Byte Count •.....•.••.••. 3-25
Regi 5ter 5 - DMA B 110 Port Addre55 •.•.•.........•..•.•..•.. 3-25
Regi5ter 6 - DMA A Upper Byte of Memory Addre55 .....•..•.•.. 3-25
Regi5ter 7 - DMA A Lower Byte of Memory Addre55 ............. 3-25
Regi5ter 8 - DMA A Configuration .......•..............•...•. 3-26
iii

CONTENTS
Register 9
Register A Lower Byte
of Transfer Byte Count ••.
DMA A I/O Port Address.
Register B Interrupt vector •••••••
Priority Interrupt Structure •..••••...•••••...
Wait State Circuits for Interrupt Acknowledge.
Diagnostic Hood for External Loop Back •..•••.•••
Section IV
PROGRAMvtING
MUX Programmable Features.
Transact ions ....••.•••.•••
Connect Logical Channel Request Format ••
Capabi lit ies •...•••••..••••••••••.••••••
Receive Character Processing ..
Receive Error Conditions •.
Signal Character.
Edit Mode •...•
Backspace ...
Line Deletion ..
Software Handshake with the Device••
Host
ENQ/ACK Handshake •.•...•.••.••...••.•..
Device X-ON/X-OFF Handshake.
Host
X-ON/X-OFF Handshake ......•..
Single Text Termination •..•..•.
End-On-Count Text Termination.
Alert 1 Mode ...........••.
Type Ahead and Echoing .••.
Receiving Transparent or Binary Data •..
Read Request Length ...•.......•..
Host Initiated Text Termination ..
Transmit Character Processing ...•..
Automatic Output Separators Appendage •..
Transmitting Transparent or Binary Data.
Buffer Flushing ..•......•.•..•..•..••••.•.
Programming the Receiver and Transmitter.
Parity in Transmitted or Received data •••••••..
Break Detection.
Handshake Timer.
AdditionaIOptions ..
Error Handling ...
Quoting Character Mode Option .•....••..•••••••.....
Conditional Output Separators Appendage .•.
Speed Sense Mode ..
Asynchronous Events.
Solicited Events.
Diagnost ics ......•.
iv
3-26
3-26
3-26
3-27
3-27
3-28
Page
4-1
4-2
4-2
4-4
. .... . 4-4
4-5
4-5
4-6
4-6
4-6
4-7
4-7
4-8
4-8
4-9
4-9
4-9
4-10
4-11
4-11
4-12
4-12
• • '4-12
4-12
4-12
4-13
4-15
4-15
4-15
4-16
4-16
4-18
4-18
4-18
4-19
4-19
4-20

CONTENTS
Connect Logical Channel Request Definitions •••.•••••••••••...•.. 4-21
Read Device
Data, Request Code = 1 .••••••.••••••.•••••••.•.•.• 4-22
Write Device Data, 'Request Code • 2 .••••••••••••••••••.•••.•.. 4-22
Read Card Information, Request Code = 4 .••...•••••••••••...••• 4-23
Subfunct ions 0 through 33 •.•.•••••••••••••••••••••••••.•.••. 4-23
Subfunction 249 -Read Data Status •...•.•••.••••.•••••....•. 4-23
Subfunction 250. Get Card RAM •.•••.•••••••••••••••••••.•.•. 4-23
Subfunct ion 254. Get Card Status .•••••..•.•••••••••••...••• 4-24
Write Card Configuration, Request Code =5 .•.... ~ ............. 4-25
Subfunct ion 0 ............................................... 4-25
Subfunction 1. Configure Read Option •••••••••.•••••••••.•.• 4-28
Subfunction 2. End-On-Count Length •••••••••••••••••.•••.••. 4-29
Subfunction 3. Alert 1 Read Mode ............................ 4-29
Subfunction 5. Transmission Mode .•...••••••••.•.•••••...••. 4-30
Subfunction 6. Backspace Character ..••••.••••••••••••...••. 4-30
Subfunction 7. Line Delete Character •••...•••••••••.•.•••.• 4-30
Subfunction 8. Backspace and Other Options ••••••.••••...••• 4-31
Subfunction 9. Device Handshake Option •••••••••••••••.•.•.. 4-32
Subfunct ion 10. Baud Rate .••••...•..•••...•••••••••••.•..•. 4-33
Subfunction 11. Character Length ........•.••••••••.••.•.•.. 4-33
Subfunction 12. Number Of Stop Bits .•..•••.••••.•••.•...... 4-34
Subfunct ion 13. Pari ty ....•.......•..•.•...•••••••••••.....• 4-34
Subfunction 18. Character Handshake Timer .••.•..•.......... 4-35
Subfunct ion 21. Host I nterrupt Mask ..•••••.••.•.••••••..... 4-35
Subfunction 22. Host X-ON/X-OFF Characters •••.•.•••••...... 4-36
Subfunction 23. Device X-ON/X-OFF Characters •••••••.•...••. 4-37
Subfunction 24. Host ENQ/ACK Characters .•..••••....•.....•. 4-37
Subfunction 25. Host ENQ/ACK Pacing Counter .••....•........ 4-37
Subfunction 27. Single Text Terminator for Echoing CR-LF •.. 4-37
Subfunct
ion 28. Output Separator .......•.••.....•.•........ 4-37
Subfunct ion 31. Addi t ional Opt ions ...•••.•..••..•••.•...... 4-38
Subfunction 32. Single Text Terminator ••..••••..•...•...•.• 4-39
Subfunct ion 33.· Card Wr i te Regi ster ..•••...•••••....•....•. 4-39
Subfunction 34. Set Port ID .........••••..••••..•.......•.. 4-40
Control Card, Request Code = 6 ........................•....... 4-40
RTS and WIC Block Definitions .....•........•.••.•.•..•...•...... 4-41
Event Block
Description .............•..•.••.••••...•.......... 4-42
Read Status Request Block Definitions ..•..••.•...•.......•...••. 4-44
Identity Information Block Definitions .•..••..••.....•.•.•..••.. 4-46
Default MUX Configuration ...•...•.•..••..••••...••.•.....•...•.. 4-46
Subfunct ion Ass ignment Summary ....•.•••..••••....•••••...•..••.• 4-48
Read Device Data .......•.............•...••................... 4-49
Wr i t e Dev ice De t a. . . . •. . . . . . •. . •••. •••. . . • •. •. •• •. . •. . . •. . . . . . 4-49
Read Card
Information .......•...•....•..•••...•..•....•.•...•. 4-49
Write Card Co~figuration ..•...•...••...••.............•.•..... 4-49
Control Card .................................................. 4-51
v

CONTENTS
Section V Page
MA I NTENANCE •••••••••••••••••••••••••••••••••••••••••••••••••••••••• 5-1
Section VI
REPLACEABLE PARTS
Page
Replaceable Parts .................................................. 6-1
Ordering Information •.•••..........•...•.•....................... ° •• 6-1
Section VII Page
SCHEMATI C DIAGRAMS •••••..•••...•••••••••••.••.•.•••••..••.•..•••.•• 7-1
Appendix A Page
ASC II CHARACTERS AND BI NARY CODES ......•........................... A-1
vi

Figure 1-1. HP 27130A MUX
1-0

GENERAL INFORMATION Irl~II.II'
This manual provides general information, installation, theory of operation, maintenance instruc-
tions, replaceable parts information, and servIcIng diagrams for the Hewlett-Packard
HP 27130A Eight-Channel Multiplexer (MUX). This chapter contains general information concern-
ing the MUX, and includes a description and specifications.
PHYSICAL DESCRIPTION
The HP 27130A Eight-Channel Multiplexer (MUX) is shown in fIgure 1-1 and consists of a printed
circuit card, a cable,
an RS-232-C connection box, and an installation manual.
FUNCTIONAL DESCRIPTION
The HP 27130A Eight-Channel Multiplexer provides multiplexed connections between a
Hewlett-Packard computer system and up to eight EIA RS-232-C/RS-423-A/RS-422-A type
devices (not including modems).
Figure
1- 2 shows a Hewlett-Packard computer system using CHANNEL I/O and the MUX.
(CHANNEL I/O is a Hewlett-Packard standard defining the physical and electrical characteristics
for
an I/O system consisting of an I/O channel, an I/O channel adapter, and I/O cards. The MUX is
one of the I/O cards.)
Note
that the computer system CPU and memory communicate directly along a Memory/Processor
Bus (MPB). I/O data to/from peripheral devices reaches the CPU/memory through the I/O channel,
the
I/O channel adapter, and an I/O card such as the MUX card. The I/O data is received from
and transmitted to peripheral devices by the
I/O card, which converts device-specific data to a
format compatible with
the I/O channel, and thus the computer. The I/O channel adapter (see
figure 1-2) controls the flow of traffic between the I/O channel and the memory/processor bus.
1-1

HP 27130A
I/O
CARD
I/o
CHANNEL
ADAPTER
I/O
CARD
I/O
CARD
MUX
CARD
..... ----,
I/O
DEVICE
o UP TO
o e
o DEVICES
I/O
DEVICE
Figure 1- 2. MUX in a Typical Hewlett -Packard Computer System
1-2

HP 27130A
The HP 27130A uses several of the Z-80A family of microprocessor components to relieve the host
computer of much
of the overhead. This permits a wide range of configurable transmission
modes
and formats, thus allowing connections to various CRT terminals, printing terminals, printers,
and plotters.
EQUIPMENT SUPPLIED
The standard HP 27130A Eight-Channel Multiplexer consists of the following items (see figure 1-1):
Printed circuit card, part number 5061-4929
Seventy centimeter (27.5 inch) RS-232-C connection box cable, part number 8120-4076
RS-232-C connection box; part number 12828-60001
Extension cable kit, part number 12828-60004
EPROMs, part numbers 27130-80003 and 27130-80004
Installation manual, paI't number 27130-90001
IDENTIFICA TION
The Product
Up to five digits and a letter (2 7130A in this case) are used to identify Hewlett-Packard products.
The five digits identify
the product; the letter indicates the revision level of the product.
Printed Circuit Card
The printed circuit card supplied with the HP 27130A product is identified by a part number
marked on the card. In addition to the
part number, the card is further identified by a letter and a
four-digit date code (e.g., A;...230l). This designation is placed below the part number. The letter
identifies the version of the etched circuit on the card. The date code (the four digits following
the letter) identifies
the electrical characteristics of the card with components mounted. Thus, the
complete part number on the MUX card is:
5061-4929
A-2301
If the date code stamped on the card does not agree with the date code on the title page of this
manual, there are differences between your card and the card described herein. These
dif-
ferences are described in manual supplements available at the nearest Hewlett-Packard Sales and
Service Office
(a list of Hewlett-Packard Sales and Service Offices is contained at the back of this
manual).
1-3