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12606B
Section I
SECTION I
GENERAL INFORMATION
1-1.
INTRODUCTION.
1-2.
This manual provides installation, operating, pro-
gramming, and service information for the Hewlett-Packard
(HP) 12606B Disc Memory Interface Kit.
1-3.
DESCRIPTION.
1-4.
GENERAL.
1-5.
The equipment portion of the kit furnishes the
control circuits and cable for connecting an HP
2770A/-001/-002/-003 or 2771A/-001/-002/-003 Disc
Memory to an HP 2114B, 2115A, 2116A, or 2116B
Computer. The control circuits are on two plug-in cards
which install in the computer card cage. The cable supplied
with the kit connects the cards to the disc memory.
1-6.
The cards must not be installed in the HP 2150A
or 2150B Input/Output and Memory Extender, or in the
2151A Input/Output Extender. These extender units do
not have the direct memory access capability necessary for
operation of the disc system.
1-7.
INTERFACE KIT CONTENTS.
1-8.
The disc memory interface kit consists of the
following:
a.
Data
channel interface card
(part no.
12606-6001).
b.
Command channel interface card (part no.
12606-6002).
c.
Interface cable, 10 feet (part no. 1260"6-6004).
d.
Disc diagnostic tape (part no. 20346C).
Note
The part number of the program tape
includes a suffix letter which identifies a
particular revision of the tape. The first
issue of a tape is identified by the letter
A. Subsequent revisions are identified in
alphabetical sequence as B, C, D, etc.
If
revision of a tape requires changes to
associated documentation, an updating
supplement for the documentation is
supplied when the new tape is furnished.
Always use the latest revision of a
program tape, even if different from that
specified in this manual, together with all
updating documentation.
e.
Operating and service manual with supplement
covering diagnostic program procedures (part no.
(12606-90012).
1-9.
IDENTIFICATION.
1-10.
Hewlett-Packard uses five digits and a letter
(OOOOOA) to identify standard interface kits. If the designa-
tion of the kit received does not agree with the designation
on the title page of this manual, there are differences
between the kit received and the kit described in this
manual. These differences are explained in change sheets
and manual supplements available at HP Sales and Service
Offices. (Addresses of these offices are listed at the back of
this manual.)
1-11.
The two plug-in printed cil;cuit cards supplied with
the kit are each identified by a part number marked in a
corner of the card.
In
addition to a part number, each card
is further identified by a letter, a date code, and a division
code marked on the card (e.g. A-921-22). The letter
identifies the version of the etched circuit on the card. The
date code (three digits) refers to the electrical character-
istics of the board with components mounted. The division
code (two digits) identifies the Hewlett-Packard division
which manufactured the card. If the date code on a printed-
circuit card does not agree with the date code shown on the
corresponding logic diagram in this manual, the card differs
from the one described in this manual. These differences
are explained in change sheets or a manual supplement
available at HP Sales and Service Offices.
1-12.
The interface cable is identified by its part
number, marked on one of the plugs attached to the cable.
1-13.
The diagnostic program tape is identified by name
and part number, marked on a label affixed to the
beginning of the tape.
1-14.
The manual and manual supplement are identified
by title, part number, and publication date, marked on the
title page of the document.
1-15.
ADDITIONAL ITEMS REQUIRED.
1-16.
EQUIPMENT.
1-17.
In addition to the computer, disc memory, and
disc memory power supply, use of the disc memory inter-
face kit requires that the computer include the direct
memory access (DMA) option. This option consists of the
HP 12578A or 12578A-001 Accessory Kit (for the
HP 2115A, 2116A, or 2116B Computers), or the
HP 12607 A Accessory Kit (for the HP 2114B Computer).
1-1
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