-=- ~~-:: - ~ =- Maintenance Library

CCCiCCC'C:C:(

- ---

-=- ^~~-:: - ^~ =- Maintenance Library

®

Volume 1 Volume 2 Volume 3

PLAN ~~~OUT OL TDIAG PWR POWER LGNDLEGEND ABBREVIATIONS SENSEDATA I NT R ODUCTION

M LX CROSS REFERENCE F S . INDEX I FAULT SYSTEM C M D COMMANDS STARTMAINT C T R L CONTROL M I C ROPROGRAM MSG SYSTEM MESSAGES MPL 23FD MIC FL ~~~~

PANEL M P L ATTACHMENT LOC ATIONS M I C R 0 ~~~~-ICS CH L I CHANNEL . - INTERFACE INSTALLATION

- - - - - - - - -

- - - -

--- _{- -} - - - - - - - - _- - - - - - - ^- -- CT L - INTERFACE I CONTROL INDEX

- = ~ = - = = = Storage Control, Model 2

3830-2

© Copvri~ht IBM Corporation 1972, 1973

'"

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PREFACE

The 3830·2 Maintenance Library is designed to assist the Customer Engineer in achieving a repair when a failure is discovered either by a customer who has placed a call, or by the CE performing system checkout or routine E R EP analysis.

The manual assumes that the majority of calls can be handled by a product-trained CE with help available from a support- trained CE when needed. Maintenance material is given prominence in the manual organization, with emphasis on

"how to fix" rather than on theory of operation.

Information pertaining to MST component circuits, ALD's, and FEALD's will be found in the I BM Maintenance Library, Log;c Blocks Automated Logic Diagrams SL T, SLD, ASL T, MST, Order No. SY22·2798.

Information pertaining to MST packaging, tools, and wiring change procedure will be found in the FE Theory of Operation, IBM Monolithic System Technology, Order No. SY22·6739.

Information pertaining to MST power supplies and components will be found in the FE Theory of Operation, IBM Power Supplies, Order No. SY22·2799.

MAINTENANCE LIBRARY ORDERING PROCEDURE (IBM INTERNAL)

Individual pages of the 3830·2 Maintenance Library can be ordered from the San Jose plant by using the Wiring Diagraml Logic Page Request (Order No. 120-1679). Indicate machine type (3830-2) and, in the columns headed "Logic Page", enter the sequence number, part number, and EC number.

Groups .of pages can be ordered by including a description (section, volume, etc.) and the machine serial number.

CE·MLM Feedback fonns are provided at the front of this volume for reader comments: If the forms have been removed, send your comments to the address below.

This manual was prepared by the IBM General Products Division, Product Publications, Department G24, San Jose, California 9S 193.

© Copyright IBM Corporation 1972.1973

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SAFETY

CE SAFETY PRACTICES

All Customer Engineers are expected to take every safety precaution possible and observe the following safety prac- tices while maintaining IBM equipment:

1. You should not WOrk alone under hazardOUS conditions or around equipment with dangerous voltage. Always advise your manager if you MUST work alone.

2. Remove all power, ac and dc, when removing or assem- bling major components, working in immediate areas of power supplies, performing mechanical inspection of pow·

er supplies, or installing changes in machine circuitry.

3. After turning off wall box power switch, lock it in the Off position or tag it with a "Do Not Operate" tag, Form 229-1266. Pull power supply cord whenever possible.

4. When it is absolutely necessary to work on equipment having exposed operating mechanical parts or exposed live electrical circuitry anywhere in the machine, observe the following precautions:

a. Another person familiar with power off controls must be in immediate vicinity.

b. Do not wear rings, wrist watches, chains, bracelets, or metal cuff links.

c_ Use only insulated pliers and screwdrivers.

d. Keep one hand in pocket.

e. When using test instruments, be certain that controls are set correctly and that insulated probes of proper capacity are used.

f. Avoid contacting ground potential (metal floor strips, machine frames, etc.l. Use suitable rubber mats, pur·

chased locally if necessary.

5. Wear safety glasses when:

a. Using a hammer to drive pins, riveting, staking, etc.

b. Power or hand drilling, reaming, grinding, etc.

c. Using spring hooks, attaching springs.

d. Soldering, wire cutting, removing steel bands.

e. Cleaning parts with solvents, sprays, cleaners, chemi·

cals, etc.

f. Performing any other work that may be hazardous to your eyes. REMEMBER - THEY ARE YOUR EYES.

6. Follow special safety instructions when performing special·

ized tasks, such as handling cathode ray tubes and extremely high voltages. These instructions are outlined in CEMs and the safety portion of the maintenance manuals.

7. Do not use solvents, chemicals, greases, or oils that have not been approved by IBM.

8. Avoid using tools or test equipment that have not been ap- proved by IBM.

9. Replace worn or broken tools and test equipment.

10. Lift by standing or pushing up with stronger leg muscles- this takes strain off back muscles. Do not lift any equip- ment or parts weighing over 60 pounds.

11 .. After ma\ntenance, restore all safety devices, such as guards, shields, signs, and grounding wires.

12. Each Customer Engineer is responsible to be certain that no action on his part renders products unsafe or exposes customer personnel to hazards.

13. Place removed machine covers in a safe out-of·the-way place where no one can trip over them.

14; Ensure that all machine covers are in place before returning machine to customer.

15. Always place CE tool kit away from walk areas where no one can trip over it; for example, under desk or table.

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16. Avoid touching moving rnechanical parts when lubricating, checking for play, etc.

17. When using stroboscope, do not touch ANYTH I NG - it may be moving.

18. Avoid wearing loose clothing that may be caught in mao chi nery. Shirt sleeves must be left buttoned or rolled above the elbow.

19. Ties must be tucked in shirt or have a tie clasp (preferably nonconductivel approximately 3 inches from end. Tie chains are not recommended.

20. Before starting equipment, make certain fellow CEs and customer personnel are not in a hazardous position.

21. Maintain good housekeeping in area of machine while per- forming and after completing maintenance.

Knowing safety rules is not enough.

An unsafe act will inevitably lead to an accident.

Use good judgment - eliminate unsafe acts.

ARTIFICIAL RESPIRATION

General Considerations

1. Start Immediately - Seconds Count

Do not move victim unless absolutely necessary to remove from danger. Do ~ot wait or look for help or stop to loosen clothing, warm the victim, or apply stimulants.

2. Check Mouth for Obstructions

Remove foreign objects. Pull tongue forward.

3. Loosen Clothing - Keep Victim Warm

Take care of these items after victim is breathing by him- self or when help is available.

4. Remain in Position

After victim revives, be ready to resume respiration if necessary.

5. Call a Doctor

Have someone summon medical aid.

6. Don't Give Up

Continue without interruption until victim is breathing without help or is certainly dead.

Rescue Breathing. for Adults

1. Place victim on his back irnmedi<ltely.

2. Clear throat of water, food, or foreign matter.

3. Tilt head back to open air passage.

4. Lift jaw up to keep tongue out of air passage.

5. Pinch nostrils to prevent air leakage when you blow.

6. Blow until you see chest rise.

7. Remove your lips and allow lungs to empty.

8. Listen for.snoring and gurglings - signs of throat obstruc- tion.

9. Repeat mouth to mouth breathing 10-20 times a minute.

Continue rescue breathing until victim breathes for himself.

Thumb and finger positions

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Final mouth·to·

mouth position

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PREFACE, SAFETY

PREFACE, SAFETY

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IBM 3830-2 MAINTENANCE LIBRARY

HOW TO FIND INFORMATION:

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PLAN 10

CONTENTS-CH L·I

CHL·11

CTRL 1

DOCUMENTATION PLAN (PLAN 101 defines major sections of the manual. Where practical, documentation is arranged in sections corresponding to the natural breakdown of machine elements.

FIRST PAGE OF EACH SECTION indicates the contents of the section and may contain other pertinent information.

DIVIDER TABS provide rapid accessibility and allow efficient cross referencing between and within maintenance library sections.

PAGE NUMBERS in "thumbing" position may be rapidly scanned by flipping pages.

© Copyright IBM Corporation 1972, 1973

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ERROR MESSAGE

INDEX 1

START 1

ACTION

MICRO 540

INTRODUCTION TO THE IBM 3830 STORAGE CONTROL, MODEL 2

INTR 10

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IBM 3830-2 MAINTENANCE LIBRARY

PLAN 5

A SUBJECT INDEX gives access to specific subjects.

START is the starting point for all maintenance. This section is designed to get you

quickly on the right track and either lead you to a solution or direct you to more specialized in- formation elsewhere in the manual.

ERROR DICTIONARIES (MICRO and OL TSI reference appropriate maintenance procedures for microdiagnostic and online-test error messages.

FAULT SYMPTOM INDEX (FSII references appropriate maintenance procedures for errors identified by sense data.

WANT TO LEARN THE 3830·21 The INTR, CMD, and MIC sections contain instructional and recall material that is useful either for initial training or as backup information during the maintenance activity.

IBM 3830·2 MAINTENANCE LIBRARY

PLAN 5

(

MAINTENANCE LIBRARY DOCUMENTATION PLAN

PLAN

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l

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3830-2

The documentation plan defines organization of manual and content of major manual, sections.

Legend pages contain descriptions of symbols, conventions, and abbreviations used in the MLM.

Maintenance Library Cross Reference (MLXI pages provide an index of entry/exit Iin8$ in this MLM and in , MLMs of units that interface with

the 3830-2.

The starting point for all maintenance activity. High level diagnostic MAPs help isolate the fault to a single conceptual unit. A preventive maintenance schedule is included.

Performance data collection and analysis. Includes descriptions and example of statistical data, error data, and environmental data.

Description and operation of the 3830-2 CE panel. Includes error collection and analysis from CE

panel. •

MICRO diagnostics operating summary and error message dictionary .

l,--_O~LT---,J

l,--_SE_NS_E---JJ

l'---_FS ____ I ---JJ

l'--~CT~R~L ^___ J

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l _____ C_HL_-1 ---Jr l,--_C_TL_-I ---JJ

_ . _ _ ^{. .} - - - - - ^,-.-~-- - - - - -

Online tests (OL Tsl operating summary and error message dictionary .

Detailed description of sense information.

... \

Fault Symp(om Index (FSI) used with error code derived from sense data.

The control (CTRLI unit is the heart of the 3830-2 Storage Control. Detailed MAPs are provided for trouble diagnosis.

Backup information includes descriptions of the control storage, microprogram instruction decode, general purpose registers, and arithmetic logic unit (ALUI.

Theory and maintenance

information for the microprogram load (MPLI file.

Detailed MAPs followed by descriptions of MPL file/3830-2 attachment circuits and initial microprogram load (lMPL).

Detailed MAPs and descriptive information for the channel interface conceptual unit, including the Two Channel Switch feature and Two Channel Switch, Additional feature.

Explains how the control interface allows selection and control of a disk drive.

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MAINTENANCE LIBRARY DOCUMENTATION PLAN

PLAN 10

l,---..:...P..:...::..;;,WR~f

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Detailed MAPs otthe 3830-2 power system. Includes sequencing and distribution diagrams.

Introduction to IBM 3830 Storage Control, Model 2. Describes the various conceptual units which make up the 3830-2. Shows data and control flow within and between the 3830-2 and the disk storage modules.

Microprogram and hardware operations for the various commands and operations performed by the disk storage subsystem.

Microprogram information needed to read CLDs. Describes the micro- block format, the various microword formats, and register assignments.

Also included are microprogram instruction examples.

l ^I

MICFL ) ,

l' --- ^LOCATIONs J

l ^I NS"tLLATloN J

l ^INDEX J

Structurai and component locations for the 3830 Storage Control, Model 2.

Installation instructions for the IBM 3830-2.

Alphabetical subject index of maintenance library.

MAINTENANCE LIBRARY DOCUMENTATION PLAN

PLAN 10

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CONTENTS

LGND

Legend . . . LGND 6

Logic Diagrams Function Blocks

Logic Block Special Symbols Logic Block Suffixes itorage Elements

~gic Diagrams

Analog/Digital Logic Blocks

Flowcharts. . . LGND 8

Solid Logic Design Automation LGND 10

2 Level Symmetrical 2 Level Asymmetrical Voltage Levels

Functional Symbols. . . . LGND 12 Descriptions

Decode- Matrix

Elements With Common Inputs/Outputs LGND 14

Abbreviations and Definitions. LGND 16

3830-2

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ALD VERSION INFORMATION

3830-2 ADDITIVE CARD CODES { W2CH = Two Channel Switch

. . W4CH = Two Channel Switch, Additional 3830-2 MACHINE VERSION CODES

000= Basic

001

=

II

004 = Two Channel Switch Additional without String Switch Attachment

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CONTENTS,

ALD VERSION INFORMATION

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L.OC. TYPE

A-A1 PZ 2731 CHAN • SELECTION

REQUEST IN AND AESETS k ~

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CON-TENTS.

ALD VERSION INFORMATION

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LEGEND (Part 1 of 6)

Logic Diagrams

In the following logic representation, line signal levels are disregarded. The purpose of the symbols and descriptions is to provide a reference for servicing. Additional informa·

tion can be found in IBM Maintenance Library, Logic Blocks, Automated Logic Diagrams SL T, SLD, ASL T, MST, Order No. SY22·2798; and IBM Maintenance Library, Monolithic System Technology, Theory of Operation, P.f1Ckaging, Tools and Wiring Change Procedure, Order No. SY22-6739.

AND

IORI OR

G B B B

G

(frequency)

G

B B

G

G

G

3830·2

Exclusive Or

Output IS active If either Input, but not both,

IS active.

Even

An even number of Inputs (including zerol must be active to produce an active output.

Odd

An odd number of Inputs must be active to produce an active output.

Limiter

Limits one or both extremes of a wave form.

Single Shot

Time Delay

Oscillator

Amplifier

Signal Mode Converter

Negator

I nverts logic

r::l

H

Current Switch

c.::J

Schmitt Trigger

Pulse Generator

Drover

Threshold

Impedance Network

Algebraic Sum

Filter

. . :

© COPVrlght IBM Corporalton 1972, 1973

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c c c c c ^(~ c c c

C Capacitor PWR Power Supply Hold Coil

CR Diode PIN Card Socket Pin Pick Coil

Z Impedance Network R Resistor Pick 1 Coil

INO Indicator SW Switch Single Coil

L Inductor THRM Thermal Element See Diagram

JMPR Jumper T Transformer Entry

SPEC Special Function FUSE Fuse Exit

L T Transmission Line Terminator LO Transmission Line Driver 10 Indicator Driver CD Core Driver

HD Magnetic Head Driver MD Magnet Dnver (Relay, etc.) V Voltage Amplifier OF Differential Amplifier

Set

IT

Reset Off

A·A1C2 AC123 FF Flip Flop

FL Flip Latch

PH Polarity Hold F F Delayed On

LR Line Receiver

OR OR

Set n o n Complement

A AND

WL Wire Logic

Example

"OR" circuit being used as an indicator driver

8

Partial

Y1~ransfer

• Clear Register Name and ALD Page .... I--'...;.;c;~

15

DECODE

Example shows decode of posltion~ 5, 6, 7.

REGISTER Symbol ( . ) means that register is displayed.

Off

Reset Delayed Off

Data

IT

Control Clear

Clear

Carry Name

(Seroal I nput Data)

L

Shift Clear

--~~ Name and Page .... 1 - - -

o

T

(Serial Output Data)

c c ^c~ c c c ^{C C:}

RY-CT

-1J--

-0-

-0=

OP N/C Point

Flip-Latch

Symbol (-) Identifies Indicator lamp.

Card location and ALD (logic) page reference at bottom of block.

Flip-Flop

Shift Input IS shown by a P (shift to active) or N (shift to Inactlvel. Delayed output (D) does not change state until end of shift pulse.

Polarity Hold

Output becomes active when data line and control line are both made active. Output remains active when control Ime becomes inactive. PH registers can have contents changed by strobing new data In With the control line; reset is unnecessary.

COUNTER

• Counter advance pulse is + for UP count

for down.

SHIFT REGISTER

C Timing Charts

LEGEND (Part 1 of 6)

LGND 6

Digital Logic: Conveys Information by a deVice assumlllg a limited number of discrete states, usually two.

Analog Logic: Conveys Information through Signals that vary on amplitude, frequency, phase, or com·

pound frequency throughout a continuous operat·

inb range or time pert ad.

__ U SUM V IoIII-_S_u_f_fl_'X_to-cfu_n_c_t_ID_n _ _ _ - - U 0-03A5 V (Voltage) I (Current)

- U D - - -

- U

~ °

U (Up): A voltage or current mode Signal that per·

forms Its function as the voltage changes toward positive or as the magnitude of the current Increases.

D (Down): A voltage or current mode signal that performs its function as the voltage changes toward negative or as the magnitude of the current decreases.

U-D: As shown In example, Indicates Signal InverSion.

F (Frequency): A Signal that conveys Information by the combined effect of many IndiVidual oscillations.

C: I nd,cates the presence of short pulses.

" :~'.".' .

ACTIVE STATE

Numerals at the beginning and end of the bar Identify the Signals (numbered on the same chart I that Sertal data enters at

hlgh·order bit position and IS shifted toward low order bit pOSition.

Sertal data eXits at low-order bit position.

3 2" activate and deactivate thiS line

---...;~-_ _ _ _ _ _ ~~ A bar over the numeral (2) ,nd"

: ... . .>.: ..

cates that the lack of the Signal actIvates or deactivates the line The active-state bar ,nd,cates the polartty shift.

LEGEND (Part 1 of 6)

LGND 6

(

LEGEND (Part 2 of 6)

XXlOO--lOS4

A

I

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B BR3

I

LS-OX*OO-LE WRITE

CHECK FILE MASK FOR ALLOW NO WRITE

(Gatel _ _ _ _ _

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1·

MICROPROGRAM INSTRUCTION EXAMPLE

Add 32 to contents of SC register and place results on D bus only. "c" ^causes

ST3C to be turned on if there is a carry out of ALU.

MUL TIPLE LINE TRANSFER

GATE

Numerals against gate symbol give page or diagram number of gati ng ci rcuit.

DTA·-DRV INTERFACE DTA- DRV INTERFACE

T T

T T

Wired

Indicate & Stop

l

Pluggable or Switchable

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3830-2

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INTERFACE BETWEEN TWO FUNCTIONAL UNITS

CHECK

PARITY CHECK

INDICATABLE BUS WITH NUMBER OF BUS LINES SHOWN

INTERBOARD CONNECTOR

Relay Contacts NIC NIO

C~

~

page only

c:J.--

(~)

SOLENOID

Identified by name, e.g., Feed Clutch.

RELAY OR CONTACTOR Type indicated by letter code.

P = Pick H = Hold PL = Pick Lower

PU = Pick Upper

LP = Latch Pick LU = Latch Upper

RELAY CONTACTS

Shown in the deenergized position.

NIC = Normally Closed (breakl.

N/O = Normally Open (makel.

EXTERNAL PAGE CONNECTOR Indicates connection between diagrams on separate pages. Letter keys are used to identify corresponding points: Below the symbol is the page number of the connecting point.

INTERNAL PAGE CONNECTOR Indicates connection between several parts of the same diagram. Line-of-sight arrows assist in locating other connector(sl.

TEST POINTS

All three are used throughout the manual.

The waveform in the symbol is never intended to represent any real waveform to be displayed.

These symbols are used to highlight component installations, removals, adjustments, and measurements.

INSTALLATIONS AND REMOVALS

ADJUSTMENTS

MEASUREMENT~CHECKS

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Flowcharts

r - - - - - -- --,

I I

L _ _ _ _ _ _ _ _ ...I

No

C (Pagel

Note: See MICFL section for special flowchart symbols used in that section.

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LEGEND (Part 2 of 61

LGND8

PROCESS, MAJOR FUNCTIONS OR EVENTS

Indicates entrance from correspondingly lettered symbol on referenced page.

ANNOTATION lin-Line)

Gives descriptive comment or explanatory note.

INTERNAL PAGE CONNECTOR

Internal page connector shows entry from correspondingly- numbered symbol elsewhere on page. Flow is top to bottom from the reentry point.

ANNOTATION (Supplementary)

Gives descriptive comment or explanatory note.

Block identifies process and indicates where the detailed flowchart is located.

Indicates a branch to alternate paths.

Indicates exit to correspondingly lettered symbol on referenced page.

Indicates beginning or end of flow path.

Symptom Code: Developed from sense information.

Error Code: Used with microdiagnostics.

LEGEND (Part 2 of 61

lGND8

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LEGEND (Part 3 of 6)

SOLID LOGIC DESIGN AUTOMATION

" ' / .. 2 Level Symmetrical

Data D - E _ P H Control

Clear .

ORWl

~

~

"M w'" .... '" 'od' ... poI_.., .... ~

A the indicated polarity.

The output line will be at its indicated polarity when all of the input OR groupings have one or more of their inputs at the indicated polarity.

; A

IODD~

• A . ODD number of its input AND groupings has all its inputs --"'--A... at the indicated polarity.

The output line follows the data input line when the r-""'T--' control input line is at its indicated polarity and the

§=J

~ polarity, the output will remain at the polarity it held at the moment the control line changed.

When the top AND input goes to the polarity shown, a pulse sets the circuit and produces output of the polarity shown. After set time, the top AND has no effect.

Output opposite the polarity indicated results when the bottom AND goes to the polarity shown. After reset time the bottom AND input has no effect.

When one or more of the input pulses change to . its indicated polarity, the output line temporarily changes to the polarity shown for a period of time that is characteristic of the particular circuit.

When the output of a blo!:k enters both a DOT OR and a DOT AND, the letters WL {wired logic) are placed to the right of the primary block function symbol.

Basic blocks whose outputs are connected externally to perform an AND or OR-function are identified by an A or OR placed to the right of the primary block function symbol, replacing the WL.

Note: Other functions may be dotted as shown in the chart below.

ADDITIONAL 2 LEVEL SYMMETRICAL

Input Output Input Output

Level Level Symbol Level Level Symbol

OE A OE-A AND PH A·PH

ODD ODD·A OE OE·PH

OR OR-A OR OR-PH

AND OR A-OR AND FF A-FF A·FL

OE OE·OR OE OR OE·FF Oe·FL

OR FL OR·FF OR-FL

AND ODD A·ODD

AND SS A·SS

AND OE A·OE OE OE-SS

OR OR·OE OR OR·SS

Note: For additiona/. information _ IBM Maintenance Library, Logic Blocks, AutomettJd Logic Di.,r_ SL T, SLD, order number SY22·2798.

C> ~ritlht 11M ~ 1172, 1m, 19715

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ODD The output line will be at its indicated level when one

m

m

ADDITIONAL 2 LEVEL ASYMMETRICAL LOGIC

Input Output Input

Level Level Symbol Level

·

.

·

·

Output

I

Level

OE

["AOVOhM]

PH functions:

A,OR,AR,

SS OE orODD

Symbol OE PH 55

Note: For additional information see IBM Maintenance Library, Logic Blocks, Automated Logic Diagrams SL T. SL D, ASL T, MST, order number SY22-2798

Level Logic::m

U t { ::: ... .

A D - R . P H OE

CTL ClR

AU

A OR·F

Delineator

~ A

A~

O E - U -

~ ~

The output line will be at its indicated polarity when one or more of the input functions are satisfied and the CTl input is at its indicated state. When the CTL input goes to the opposite polarity of that indicated, the output will hold whatever polarity it possessed. Activating the ClR input line resets the Polarity Hold circuit and th£ output will be reverse of the polarity shown.

The output lines will be at the indicated polarity when one or more of the input AND functions above the delineator has been satisfied. After set time the upper AND function has no effect.

Output opposite the indicated polarity results when the AND function below the delineator goes to the polarity shown. After reset time the lower AND function has no effect.

Ai: the time one or both input functions is satisfied, the output line temporarily changes to the polarity shown for a period of time determined by the Single Shot {55) block circuit.

~

~ between top and bottom functional groupings.

The Fl, PH and other symbols shall be placed as the top line output pin position where the macro symbol space requirement prohibits the dot function to be placed within the logic block.

Note: Other functions may be dotted as shown in the .chart below.

ADDITIONAL 3lEVEllOGIC .

Second Output Input Second Output

Level Level Symbol Level Level Level Symbol

-

^•

-

AND OR A-OR

OE OE-OR AND SS A·SS

-

-Any of the following basic functions A, OR, AR, or OE.

IBM CONFIDENTIAL

UNTIL MARCH 26. 1976. ~NCLASSIFIED THEREAFTER

c .. ·.'···

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LEGEND (Part 3 of 61

LGND 10

Voltage Levels

Technology MST-l MST·2 MST·4 Input MPUL -0.613 +0.675 10.570 LPUl -0.969 +0.230 10170 LNDL -1.522 -0.240 -0.170 MNDL -2.383 ^~1.260 -1000 MPUl ^~ Most positive up level LPUL ~ Least Positive up level LNDl ~ Least negative down level MNDL ^~ Most negative down level

-0.613 -0.969

Output '0570 '0265 -0265

·0800

Unreliable Region

+0.675 77)7)';~'7)';mm77)7)';'77.:'7)';m

-0. 240 "?7;m77)~?7;"'77.777.m77)7)';"7'h

+0.570 ?7}'7}';7)t1'7}';"77."m77.:'lZ27.7.:"f7J'7}';'77.

Up Level Region

Drive SLD Logic Switching:

3.0V

~¥'~ :I:;r~:,ctable

6.0V

7rl7'77771

(Floatlngl 0.3V ^~777.b7;

0.1 V ~"""'1'~ Minus (-)

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LEGEND (Part 3 of 6)

LGND 10

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LEGEND (Part 4 of 8)

FUNCTIONAL SYMBOLS

1111I1111

S FL Functional Symbol

R J FF

T

r

^£j

•

•

K b S b S

c J c J

d d R

e R e R

PH

f K K

. . . Sto, ...

Symbols

Inherent-OR in the FF Note: For additioqa' information see IBM Maintenance

Library Logic Blocks, Automated Logic Diagrams SL T, SLD, ASL T, MST, Order No. SY22·2798

STORAGE ELEMENT LINE DEFINITIONS

Inputs to storage blocks ar • .identified by I.tters inside the block, adjacent to each input.

S Set R R.set

J Set (Complement) K Reset (Compl.ment) T Compl.ment C Control CD ControllaclData G Gating

The storage elements above show combinations of inputs.

The storage elements IFL, FF, PH) show examples of the input line designations.

Th. inputs are defined al follows:

S Set: When set is active, all outputs are at the polarity shoWn.

R Reset: When reset is active, all outputs are at a JjOlarity opposite to that shown.

J Set: Acts as a set input, except that simultaneous application of J and K input. Will complement the output.

K Reset: Acts like a reset, except in combination with a J input.

T Compllll'18nt: The T input complaments each output.

C Control: When active, the control input permits the output to change with changes to the data input line. When inactive, the control line holds the output at whatever polarity it possessed at the moment , the control lina went inactive.

CD Controlled Data: When the associated control input is the polarity shown, a CD input at the polarity shown sets the storage ele·

ment. likewise, a CD input at its opposite polarity resets the storage element, when a control input is

active. If multiple CD inputs to the storage element. anyone active CO input can set the storage element.

G Gate: Represents the AND function without the use of the AND logic symbol. When multiple gating I ines are required, gates are identified by the same numerals used to identify its related gated dependant line. A Gl gate will control an input or output line marked with a 1.

G Gate linput): When at the polarity shown will allow dependent inputs of the polarity indicated to affect the storage element. In all other CIK8S it can be considered inactive.

G Gate loutput): The dependent output Will be at the polarity shown when the associated getingline is at. its indicated polarity. In all other conditions the output stands opposite to the polarity shown.

~30-2

o ~ IIM~ 1872.1973.197&

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J

~j U ^J

^...y

. . _ - - -

•

s

c R

/:.. ^.. _~\ (.~

~ f "'-J'

Functional Symbol

:=3:~.D~~d

aUS

C R

b G1 '

FL d

e

---~;:::::==~.

~?ptFF L

Functional Symbol FF 2 S f

R g Note: If the outputs can be determined for simultaneous set·reset, an S or R below an output indicates the FF's condition, either set or reset.

Multiple set (or reset) inputs are considered to be ORed.

Si ... Function Application Depend.nt Notation

(~

The decimal sum of the line values of those inputs which are at their active level equals the value of the active output line. If no input lines are active the 0 output line is active. If all input lines are active the 7 output line is active.

Note: The decimal sum value existing at the decoder inputs agrees with the decimal number shown at the output line labels. Only one output can be active at any given time.

Output Valu. Input Lin.

Condition

0 .! ^{b c}

1 a Ii c

2 a b c

3

a

4 a Ii c

5 a Ii c

6 a b c

7 a b c

g

Not.: Rightmost digit on the output line corresponds to the topmost digit on the input line ("X" in any position means that input line has no effect).

1 2

Multiple output lines can be associated with a given output (sum) .

OCO GA GB

Al A2 A4

OB lB 3B 4B

5B A decoder shown with gating lines.

IBM CONFIDENTIAL

UNTIL MARCH 26, 1976, UNCLASSIFIED THEREAFTER

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LEGEND IPart 4 of 61

LGND12

An equal sign (=) followed by a number specifies the number of input lines of the polarity shown required to produce the indicated output.

- T G 0 7 [ J 010*- - 2 1 F

A·B2M

Note: An asterisk (*) on an input or·

output line denotes a connection that leaves the' board, or refers to the connector listing at the bottom of the ALD page.

I

bo~

h-

A plus (+) or minus ( t::::.. I under an output line indicates the extreme potential that may be forced by an external source,

A loading character (L or UI under the output line or on the edge of the block under the output I ine ,nd,cates that the external load cannot be isolated from the driving circuit without affecting the output of the driver,

Special Notations

V3--~~-+--~--- V2--~r--+---+---

V1----~--~--~-- VO----~--~--~--

XO Xl X2

Activ.lnput Lines XO X1 X2 VO

X X

X X

X X

X X

X X

X X X

X X

XO Xl X2

VO

V2

X X X

Functional Symbol

V2

X X X

MTX

o

1 1

2 2

3 4 5 6 7

o

3 9

6 10 9 11

Active V3 Output

0 1 2 3 4 5 6 7 8

X 9

X 10 X 11 Note: The matrix (MTX) is a functional logic block with two or more groups of inputs. The decimal numbered output will be active when it equals the decimal sum of one active line from each input group (shown in Chart). If any input group does not have an active input, then there is no active output from the matrix block. '

LEGEND (Part 4 of 6)

LGND 12

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