buku abel.pdf

8/12/2019 buku abel.pdf

1/14

4.6

The

ABELHardware escription

anguage

hardwm

descriprionoEuage

HDL)

tblr

$as .venied

o allos

specilylogicuncrionsor

re"lizaiionn PLDS. n ABEL

proer.m

conraininseleral lenenc:

Se. ron

6 TheABELHard iares . r i p i i onanquaq

ABEL

s a

.

.

Doclncntaiio..

ncludine

fogrifr

naoe

andconnens.

.

Dechrari.ns

hat denril the nputs

ndotrQu8ol $e logic unctionso

.

SntemenN

atspecrlr he

o i. aunctionso be

pedomed

.

Usul l l l

add lsnr ion l rhe type lPLDororherrd l c tddev i .e

n

which

lhe speufied

ogi. fun.tioD\areb be

pennrmed

.

U\uall\.

rcj veckr. rhmspecifj

rbc . ic funcriont e\pecred utpu6

ABEL

( slpponcd y m.1aEl l,nsldsslrr

z]vr {hrch

$e'll

simplrellrn

/atl

.,,?i/.,. Thecompile.\tob

n Io h0nre dreABEL reri file nb a iuse

pdrren $d cm bedolvnLord.d

nto

pbtsical

PLD. Even hough on PLDS

.an be

ph)sicallrpro-lrnminednlr

qith

ple.s

conespondinso sun oi

produc(

e*presions. BEL dllows

PLD functions o be expressed

i$

mdi

tables r ncied IF natemenrsa\

ellr\ b) r algebraic.xpressiotr

omar.

The..npiler mripuLlts

(hese

omuls

andminimizcs heEnrlling equarions

Io ir iiponibl.. inro he \trLlable

LD nndute.

we

ll hll, aboulPLD {ru.tur.s.

luse

paterns.

md relal.d opics

,ter 1n

Secrion .1. Dd$e ll \hd\ how . rafger BEL pmgrams. specitic LDS.

Ihe

me n me.

e

ll\hos ho{'ABEL

canbeused , speclfJ"

ombinalonal ogrc

lu i c rons \dhournecessan l )a \ lng dec la rehe rsereddcv lce trp . .

a te r .

in

Secrn T Ll.

ue

ll do rhe lric

ror\eque.tial ogL.luncrNns

4.6.1 ABELProgram tructure

Table+-10

ho*s the

qpicnl

srruclrre.l

d ABEL

progran.

and

Trble.l

ll

show:

an cMlprogranrexhibuingde

ollosing aneuagee{ures:

.

/r'.,rf.ri

mu$ begi.

rith a eter or unde*coE.nay

contain p to ll

lene^.

drglB. nd

undeNores. ndarecrsesennrve

.

A

proeram

ile begins

wnh a ,ddu]e v.teheni

Bhich asocrares n

identiner

A1@ crr.lit)

wnh the

program

nodule.

Ldee

pro8rans

cao

haEnuhple

m.dules. rch

ith

its oun lo.altitle,

declarations.nd

equtrons.Note hat elwords

uchas Dodule ar. nolcase

ensitrve.

ABEL

(Advanc.d

Booled Equatidn

nguag.) n a hdemsk of

Data o

CorDomrioo

Redmond.

A 930?3).

LEGALNONCE


2/14

combinarrdnalLogic

esiqn rnc

p

es

Th. tit.le

sorementpsofies

tile ning rhat

will

be nsene,l nro hc

documentation

les

harare re edby rhc$npiler

A r,rfid is r

series l.hancrA ci.l.\rd h \i'gle quors

Theoprionllderice declaroriorncldes J deyicedenrifie.AlAitlcn]

uda i r i ngrhar, l enoresrhed.v rcer peL 'F16v3c,

i r r roALL6vS) he

compileruses

edeyi.e denhirerin

henrmes ldocumerturiotriles hd

irSener tes.

nd t tr\es

hedevlce

ype

oderrminc hutnr. hc.ie ic..rtr

Edl]

pednm

the ogic utulions5pecified

n heprosnm.

c,,,nc,6

beginwlrh

a double

uore

ndend

snh

mode. double

uore

or

|heendofthe

ine.

which.vercofrer

u

Pu.Acldra,i,nr

tellthc.onpiler

abour

rmbolic

names $.ciated

,th

rhedcvice

extenalpinr.

f thesi-snd ane is

preceded ith

dreNOT

pre f i x ( l ) . t hen 'necomplem.n toa t

l i ncds ignr lw i l l r p0erodthep in .

P i rd r . h u o n r ' . , r : \ n J . i o . p , n d t r b d . . 0 1 . r . , r , n .

rheconplleraslsns

hembrsed n

dc.rpdbrli.ie\ofde o.ge.ed

evice.

The r.l,pekelBord precedcs

li

ofdn or oore

popenies.

eparaed

by comm8 This

ells hcc frp,ler

he rpe oi ourput isnal. he con'

keywordndicares

combimtionrl Dtput fno istype

keyword

given.

thecompildsenenllt

a$Ddes

hat hesignal su input nlesst appe$

on rhe

efdand ide

ofm equarion. which.sc it ries ro lgureout he

outpufs

openies

romde conrer.

For

yourown rocciion.

'5besrjusr

ro use he

styp keywo.dbr

U oupursl

Ottur declardtions

aro*

tl,e desisner o detine constanrs d expressions

to naove program dabili.t andtosinpliiy logicdesien

The eq,attols

$arenent .{ji..res

thlr losic equlrions erining flput

sgnals

6 functions

iinput siCn,lswill foilow.

Equations

m wnrcD

lilc asignnent

shieoenrs

. a co.ventiolal

pDglfflng

lansuage. rch

equation

s

teminared y

r

seoicolon.

ABEL

useshe ollowrig

synboh or logical psdio.s:


3/14

se.lion46 TneABEL adwacD$n on Language

2

E

rabr

4-1r An

ABEL

,ogm

or

he

atarm

sysie4s

E si ee.i4

', 00ft'cAfucE]

1 1 ,

1 t r

. x ' ' ' x

,

' x ' ,

j (

]

. x ,

x . , . x . , . . l

1 , ' x , , x ' , ' x ' ]

0l

t

& AND

INOT(usedsrpre ix ) .

$ XOB.

$

XNOR.

As

nconventjonal

rcgd'ming

eguages, No

&)

has

Ecedence

ver

OF (r) in expessions. be o.{rTErx. E dnecdvemalesthe conpiler

.{ogni-

fl altemate

erof symbolsor hese pedions:

*, +,

/,

:

+:

,

and

:

|

:

,

lesFcrively.

Thisbookuses hedeiauh

ynbols

iJougbout.

.

Theopdonjl tdet_

recrors

slatefren ndi.areshat rest

vecrod

ollo*

.

Z,srv.d,^

asociare

nputconbinationsithexpecredulpul

aln.sr

rhey

de usedor

sinulationard rsd.g asexpiainedn Secrion .6.7.


4/14

Chaprer

Comb'naionar

oqr0es'gn

nncDres

.

Thecompiler.ecognnerveral pecil].onn 04

Includidg.,{..rrngLN

bnwhose

dlue

toni care.'

.

Tbe ,dnrbmJr dar [ s heJnd

arhN

mudul . .

Equ ions tbr combinutiond utpuB

use rhe u,.htk t assisntnenl

,pdrdr,r,

=.

Thc Lenhmdidcotan.qunion nomully

onridi r signdn me.

The hghrhod

siden r

logic

erpre\nod.

or trcc.ssily in rud

or:producs

ion. The gnil drne on $e leithand ide oiin equnod

mry be opnondlly

precededbr the

OToperaror

rh i s i sequrvd le i r tocomplemen ig rhen-s

bmd ide.

Thecompileasjobs ro

genenc

r fuse

ren such har he

ignrL

oaned nhe leithediide r.rlizes hc ogi. cKpressno.

the.igirrhand

de

4.6.2 ABEL

Compiler peration

Tbe

pmgod

i.

Tlblel

ll rellize\ rhe

lr.d irndon thd

tre

de\..ibed

otr

paee

li. Thc sisnrl ddnedENABLE x \ beercoded \ 9IjABLEA

e.ruse

ENAaLEsa

re\drved

ord

in ABEL

Nolice hd not llofthe equdiorr ppcrunderihe quaticnsn.refrenl

An inrerned ia te .qudf . r Jn idendt i. r s : cu iE4peaAel r ie lTh , equn.on

n nrrely

I definitionhd asocitrrern e\pressri

'nh Ir. 'deitirierSEclrRE

The ABEL cornpiler bnnu[s rbn .\p..iLotr tbr he idenntier

ECURE

n

cvery lace

har EcuRI pperr iter nsJeinitun

lnFigLrc L9.npageI l i i \ r . .er lLzedthenLr rmcmu{dnedl t ronthe

SECUREnd ALARM

:pressions.singmulliple

etel\ ol loSi Thc

ABEL

conpile

doesn use xpre$ionso inrerc.nned

rr

i. ths

sry.

R {ner

r

''crunchej

rheelpre\ioi\roobfuinumidrmdLnvo-ldel\umrn

roducEerun

apptupmre

or realizarionn r PLD.ThuJ.

whs' rodpiled.T$le

1 ll rhould

yield

aresuftequlvrlenro rheAND-OF.ncDitharwe\hosedn Figure

-10otr

page

16, which

hrppenso beminimxl.

In fact, rdoes.Tabl.l-ll shori rhe ynth.sized

qu&ionsile seared

l

theABEI compil.L

Nohcs hni

rhs ojirp,ler eatesequdi.n\

only tor

the

,\1,{R

gial. de onlt ourpurThe SECUREgnxldocs.ot

ppearanywh.re

Thecompilerdnds minimd

um

olprcducls iprenior

orboth,ILAF]I

andns complement.

AL-aRt4.

\

nenrioned

revioNly.

manyPLDS

.ve

he

rb,liry

selecrilel) o nvenor nor o inven heirAND-OR

trtpur hc_retese

po ld i r yequar ion

nTrbic . l - l2 isr \um-olpoduc6rer l i .$onol , {LAMdnd

wouldbeusedlourpur

nveaion

were

ele.ted.

In lhh example.he Gvese

poldt

equa'ion N

one es

prcdncted

thu $e nomal-polriiy equation fof AI"AF]]{,o rhecomFil.r will seleci 'hN

equationithe tarCetedevice ls selechble utputnve6ion.

user m

also

iorce he conpiler

to

use ei$er nom.l or revers

polanry or a s ignar

Dv

including he

keyword

bDffr'

or

"inved,

ftspectilel). n the

signlr's

istype

pDperty

ist.

Wilhsome

ABEL compileb- eywords

pos and

69

cd beusd for his

puQose.

urseeSection 6.6.l


5/14

I

lab le 4-12

Synhes

d

Tabte .11

Secton

6 TheAaELHailwarc escnptui

anguage

253

equal

ns

ileproducdbyABELior

rcgram

rirla,

r.

Va 6 1',

xi.,o

Sy3rsos

P-Tees

Fu-b

Fe dtt

Typ.

Averase

ren/otriput:

3

Revers6-potaritr

EquatioN

:

,{LrR],

oprNrc vrNDolt

D00i&

caMcE

* ]PAxlc& u1A I,'I)

4,6.3

WHEN

Statements

nd Equa{on

Btocks

In addition

o equarioos,

BEL pmvides

he rrn,

rturn,,r asdotner m.ans

to

specify

conbinarional

ogic

tunctioN

n thc

e@i,a

sclon ol an AI3EL

Program.

able

4-13

shows he

sereral

sEuctuE

f a rrEx starenenr. ibild

o

dn

F

nJ'en.ni

rr

convpntior{ roCrffrng

tmgrdE

T}e EISE

.au*

is

o0rronJl.

eE

'3r.Exp'tu.,n.\ q0

erpRsc.on

nrch

FrutrsmJ

rajre

orwe

I

r

o' lal e

0

Ei ier

&p

/

4rdxaror FaLpFql,rba

F

..e(cured..

.leFnd:0s


6/14

sclion4.6

I

Tabre

4.1r

E&od$ or

ur{Er{

ralemenrs.

Th6

ASELHadM@ De*riplion Languaqa

2ss

, i i [ { a r s ) TIEN 1

-cr

D;

x 1 = r * B ) l ( c e D ) :

, I J E X

A

A B ) f t w 1 2 - C r D :

x 2 a - ( a & B ) r ( c d D )

r 1 l r r s ) & ( E * F ) i

ELSEllr

(B)

Tn x3

=

E:

ISE 'HEII

(CJ

rcX

rc

-

F:

,

r (aJ &

G) &

(E)

c

r ( a )

e G )

&

l c )

( F ) :

trHEn

(B)

nEx

x4

,

Di )

lifid

{a & B) TlrEr xs

=

0:

ELSEHT

(A

* C)

THEN 6

=

E;

EISE L1IEX

B

'

C) THEMX7

=

Fi

ril iEN

(B)

Tr{Er{X3

=

ri ELSE

xS

=

D; i10

=

E;}

L1lrN

(D)

TlllN 19

=

lj

]


7/14

chaptr

combnaionaroqcoesign

rncipLes

Iab le 4 -15

Synhes 'zedqua lon5

produ(ed

y ABEL

or

pro m in Table

l4

'JHEII

stat.b.nr

tudp1.s

P.Te3Fu- i F&.ou t ] y eNee

:

ir


8/14

tn.h table

(tp-in,

>

4rpd riv)

sc[onrb The

BE-

a

@a'e

oesrplo-

Lanolaq

257

I

Table4.17

anaBt .

proab-

or

.e

o ' . re-n,To.

eteco '

A BEL providesnemoe say tospecit conb,nalonalogic unclons-

rhe &.,i /drlc.

with

the

eenedl

bm.i shosn n Table+16

The ket*ord

irut,-table intodrcer

a Nth table. he

pullir. d ollPd

ri9

glre

'ne

nrme\oi rhe nput i-qnrh d tneoupua $ar theydf4 Erh

of $es.

lis6 rs

eithera single ignal

lme or. rz4 sets

e descnbdully in

s.cdonl6s

Following he

orh uble nroduction E a senes l{rEmen$.

edch

lvhich

spec i l i esa . inpurva luDand .equ iedouQdva lueus ins the-_>

perator

or

e0nple.Ihc

ldlh lable or r inveireris ho*i belo{

tnth .abie

(x

>

{orx)

The ino l i npur

a luesdo.snotneedtobecomplerd :on lv theoneto l the

furction

needs o be specified nles don roare

pocesin-

n

ei$led

rsee

Seruon

.6.6).

Tabh r 17 shoss ho\v thc

pnme

numb.r

dere.tor unclon

described

d

page

li .an be specified ring

i ABEL

poeran. For conve

nidice.

he denririer lrir s defineJN a s nonym or

rheserof ou inpur

bns

lN3,N2,Nl ,o l . a l lowing.1b i t nput

d lu. o

be

wnt renade. ima l

n teger


9/14

2sg

Chapter.l

Combinal

.at

Loqic esiln

r

nc

ptes

Borh

nth hbies dnd equarions

e be usedwi$in Lt \dhd

ABEL

pDg(m.

Theequations

keyrord aodu.e\ r *quen

olequatiors.

white

rhe nrh_iabre

kerwordnroducej

inlle tru$ tabte.

I

I

4.6,5Fanges,

ers, nd

Fetations

tlost dignal

y$ens

include uses,cgineB- nd

orher

n dits hrr hudle

a

group

ol two

or more ignalsn m idendcrl

ishion.ABEL

povides

seleral

shoncuA,irconvenientlyefiningnd using uch ignah.

The

irn shoncur

s fornanine im1h.nudberd

\iFals

Ar

rho*.

in rhe

p'n

definnions

Table.1-18.

ra,sr

orsigndlnumesan defined , narins

rhe i6t

and as nMes

in ine rmge.epmcd by

_..

For

eranple.

wdriig

''N3..{0

is

rle same s wriri.g-l{3,N2,N1,:t0

\orice n de tab le ha hc

r&ge

can

be6cending rde*ending

Nerl. we

need

tucihy lof writing qudionsmoft conpr.rlv {hcn

d

-grctrp

t

jenah

re all hmdled demicdllv.

n order o reducehechlnceof

etu6andinconsisrenciei

nABELr.,issimplyrdein.dco llecrionof igmh

fJr ' .

1 'n l r J

J " .

\ l

r ' r , l , t rc '

operJ .o l

. . r

- .

a \D.

OR.o

assignnenr

sappli.d oo \er. r sappLiedo.rch cldmenro,thc.r

Eachset

6 defined r rhe bcsjnnin

of lhe

pro8nm

by $socilnng I

setnane

q'lnr

brrck.t.d isr

of lhe serelemeDb

e,g.

-llr3,N2,lr1,Nol

n

Tab le l8 ) .Th . re re l cment

isrmr ] useshoi .u r iohr iDn

your=ty1. .y4t r .

but he

el.mei'

nrmes eed otbe frrla.orhrre

my corespondence

irh

de

setname

cor{,=tsq,calr.

SerelenDnb

n al\o beconnmrs

cr=i0,1l

).

In

anl

cas. the

numberd orderoidletoens

n ser re sigrificmr.

se

lLsee.

Most

ofAAEL

J opembs.canbe rpplied o \eh Whenan operaiions

applied

o rqoo.oore

sers. Iolthe ser dust

hrve he ame umbc oiele

menu.

ard rheopenrion

applied

ndividuruyo setclemenG

n

ike

posnions.

regddli\

ol theirmfres

or numbeA. lrur.rhe

equdion

YO -r

&

M' is

equivalenio fourequd ons:

wben

m

operationncludes oth

set and nonsetmriables.he nonset

vridbles

mcombined

ndividLallywithretelemenr

. erch

osition.

hus-he

equanon

Zottt

= (sEL&N)

(

SEL&D is.quivdenoiourcquanonsofrhe

rorn

"2i

=

(sEL

Ni) *

(

sELe

ui),,tnr equal0 3.

Ano$er

nponant

eaores ABEL\ abihy o

convenelarionl

inro

lo8'cerpressions.reldrnnG a pairolopemndsombinedirhoneof the

tutati.nat

opemtorsisred rnbb

,1,19.

heconpilerconverta relaion nro

losic

expe$ion

thar s I if

rnd only f tne ehtion s

r e.

Ihe op@ds n a relation

e rearedasDnsiened

ftesels. d eilhd

opei

and

may

. d integerraser.Ifde

op.nnd sa *r, ii

is exted

sanu.signed


10/14

s6c10nr.6

l\e aBFL rad@,d Dfprion

_onqLaqe 25S

t

I ab le

4 .18

Erdnp

r orABCLa-q"s .seE

ndretar ron. .

t i i r se topera t .ooEbp]4 '

IrPut dd

ourplt

PiDs

EO,CE,GTR, TT,UXLOflY

coMP

tEa,cEl

zou"r

(sEL

&

)

*

(!sE!

[ r{)]

UNLUK'

0r

==

13) *

({ --

-br)

D'nry

'ntegefwirh

he efinos t ariable

epresenting

dr ' . r l r .0Lmber .

n \BcL

prc l idm,

e a \ ,Lmed

ok b6e. lo .HexJd.c_mat

cLcu".

umDers

n ABbL pmgrams

e assuned

o b

and

b'iary

nuhbes

de denoted

y I

prefrx

of.-h..or

5hoen

n hr

anequ

on n

Tabtet8.

A

BEL

se ' )

nd rc ld r ion \

low. lo ro f rLn .uonJ l { v

o

be. ,pE$ed, r

very

req

li1.\ol!ode

for etJnDie.

heequ1lo1.

Tabte

t8

senerare

rdniz.d

e'tuarions

irh

69

producrttrs,

sshown n the

summalrn Table 20,

inAeEL.


11/14

CombinalioMlogicoesiqn

PrincPes

I

rabre 4-20

synrhesizedequarons

byABELlor.rogam

;

'4.6,6

Don i-Care Inpuls

SoneveBions f de ABELcodpilerhdve

imitedbiliry

to hrndle

o. l_care

inputs.

s denioned

pr.viousll.

ABEL equrions

peciry

nputcomb'nanons

thatbelone o rneonjet of logi.

tuncion:de rcmtining

onbin.iions

e

ssumed o belo.g o theofirer. If some

np smbin

ionscan

n$eadbe

asignedo thed{ei. hen he

pogfumm,y be$le o

usethesedon

cde inPUB

to doabenerjob

fmininizrtion.

The ABEL language

eines tso mechmisns

or

rsiSnlng

'nput

conbinarions thed{et.In order

o use ithermehdnism.

ou

nus

inclnde

dreconpiter

dnecive

ODCSETn

yourprogran incllde'dc

in the

Etv?

popefty

istofde outpu6

or which

ou

want on\-cdes

o beconsideed.

'the

6ut mcchanism the d,r't core

un.lo*ed a$isnnent

oPetutor,

?=

Thisoperators used

nsDxd f= in equdions

o nd ic e that

npuicombina

tions matching fte dshthand side

rhould be

put into the d{et

instead of

de

on-st. Alrhoueh rhis operatorh docunenred

n thc

ABEL conPile(

rhat I use

u.fonnnlrly

ir s.ens

to

be

bloken. so m nor

going

o ri& about

n dv

mot

Th secondnecbanism is the hrh labl.vanendo. t-c@ Pmessrg s

c.abled,

any nput

onbinario.s thar arenot explicidy

isted n

themd t$le

@

put

nto rhdael. Thus, he

prin BCD-dign deEctor

described n

page

232

cd

besFcified n ABEL asshopn n Table

-21.A don't{@

volues

mplied

ot

i.pDtconbinations

O l5

becauseheseombindions

onotapPuin

hemd

rablcand be oDcsET iEcriv

is in etrect.


12/14

ccdo l r6

1a .a rL

a ruwae

esc

prnLarq .dgb

25

lirle

oonr

c&e E:&pr6

'

rnpr and

outlur pins

. ri_iable

(a,Bl->y)

L0 ,o l

>01

t0 , l l ->x ;

t1,0t

>x ;

t 1 , 1 1 - > 1 i

1r\

also

o$ibletospr.irydo.\

conbinadonsxplicnly,s [ownn

thesecondrtuthble As firduced t rhe ery eginningf Lbn eclio( BEL

recognizes

L

asa special@

bir con$dt wnose dueh

.don\-c{e.

ln

Table4-21,

he

de.dne.

" hd been quded

o rhis onslai jusro oare

r

e6ir

to

rypedonr cdes

D nedth

rable.TIE nininized equarionscsutrins

lrom

4ole

-,:l

t

.nos0

'ro.e.l 22.Notice n he Mo.;rduon, orFd;

not

equalr he

conpili

has letd ditreEnrvaiues

o. rhedon,r,c@s,

fu'Ise.PoldityEquatioagI


13/14

Comb'naDorutLog'c

eEqn

,

^r

ptos

resr,v"crars

(art

t^t

>rdPi

ti a

ABEIprogmms rr.ontdinop onul { vecros.s -c rhowedn Trble 11

on

Page

5l. The genenl

bmar

ol

ren vecroB

s v.ry riDitu ro

d ttuihhbte

tud

r shown

n Tdble

-ll. The

keywofd est

rable.

he

rpkr /dr

md,!,r'!r/dr give

he

names flhe input ignals nd

de

ourpuB

hat hev

ite.r.

Ea.horrhese

k$ k enher

singte i-qnatnrmera st.

Followi.g

he

er vector

nrDducrion

re

! senes fjaemenrs. x .h ot whjch

speciriesu

npu! xluc

nd m.rpe.redourpur alu.

usin!$e

-->

ope.Jror

ABEL re$v.cus

hrve w.

mainus rnd

puQo\is:

I

Afterrhc

A EL .ompile.

rdnnfts

rh.

ptugrm

ino lu\epr

ern tbrr

puncul!r

derice.

Iimulrks

theoperdriod

irhe tnll

progrmmed

]eyice

by applyinghe ei-vec!.r npurs r roarwarr .det of rhederice0nd

conp{ng

rl\ outplr\ *id

thc c.tre\pording

.n-vecror.dpu6.

The

desgner

mnr, pecit_v

sdries fre$

vecroA i.nlerro

Joubte,che.[ir i

device ill

bchrve

erprced

br nrne

o. dtinput combijutiotrs

2.

Aiterr

PLD

s

phy\icllly

pro-!funoed.

he

progdnming

nn rpptier

de

reslvec$

inpu$

o rhe

physicrllevicc

nrtrompares

hedevice urpurs

wff

the codesponding

n,eecror

urpu$.This !s done ro check

br

corccrdev'ce

roenmming

ndopentior.

Unlortunately.

BEL Est vsro6

seldofrLjo vefr good.job

r

enher

neot

heseIas*s.

swe

l explain.

The es vectoclioin

Tabte-| ae

repelred! Trbte.1

-t. exc.pr hdr or

readabihy

we've

used

he dcdificr

X whi.h *dr

equatedo rhedorl-c e

constmt

X.,

a.d se !e

tdedconnenr\

ro numbsde res

v$r!A.

Table

-2l

actually ppem

o bed prer, goodserofrsr

vecro6.

rod rhe

deslgners oinr

of vw'

$esevecrod

uly cover he

expecredperario. frhe

alam

ciEuit.as

renized ecbFbv-veclo.

elow:

l

If PANICs

1. her ne

aldmoutplr

F)

should eon egddtes

ofrhe

obernput

values

he emai.rigecros

ovc.cses hee

PANICs0.

2.

Ifthe

al'n n

notenabled.

henheoutpui

holtd eofi.

3 U Llealarn senableduiweteexnin-s,henie output hould eoff

a_6

r the

alrn is

enabld d

wetenotexiring_

hen houtpur houide

o.

ifany

of tbe ensorignals

rNDos.

oo& rctiacE s

O.

7.

rthe

ahm

h enabled.ete

norexidnS,nd

ltoithe sen$!sisnals

ae L.

he. he

ourpurhould

eoe


14/14

TheABELHardwareDe{rp ionL inquaqe

61

L ]

;i

1l

0l

i

Th

Problem

sthar

ABEL

doesnl

handle

on\_crres

n r'st

veclorLopos

rhe

uv dat it

\hould For

*mpl.

bv all

rishE

test

veclor

should

ert

12

dinind

inDUt ombinrtions

orresponding

o dl

l:

Po$ihlc

ombrnloons

I

i"i.;,.i"r"o

u"*..o.*t.rNc

{Ir'IDo1i

ooR

'dcAi'{cE

ut

rd'esn

i; thisntudion.

he

AsELcompilerimeareG

don'r'r"

as

heuserdoe\n

cN

whar ,ntut

due u* . d i

i t ju$Nis i \Otodl l

don

scuDinpu6

n rcsr

vcd.r lnlhi\e( mpLe.youcoul.lhaveinc'treclllnttcnrheouttutequahonds

_r

=r,tNrc

*

lrir,rsL

*E ,tgtEn&

.

-ilhe

rc$

vcctors

ould

$ili

pn$ 'ven

h n r _ D J r r . o r '

' o u d ^

r N

l / " I t h r '

" t r I

J ' r b l J

r * . - . n o - . r .

' ' . . o ,

I

p l J

' r r r ' n

D h

' l

a.t"""

l"'r"el. G"i..'

*"

b. ddeded

dlrn-q

he tlrrz

tr'r

d

r"lr

Dorldr'

which

s$n;s

that

xny

phvlcll detect

s

equirdeni

b

havitre

nngre

_erG

' ; , " ; ; ' ; ; a ;

' . . i , r o g . o

r ' , ' i , o u

'

o s + " ' ' "

t

, : , ; ; , ; - ; , . " . , , " . ' . . ' ;

.

n ,

u, .10 '

r

p. - r '

n iun '

s ' r 'd

r"ili

, il, a"","

'

g*-* 'r'ar rr

in-gle

uck-at

aurs

m be

erccted

hc

ren

vecos have o be

chosen

o rhd

.lery

posnblenu'k

n tNlt

cruses

n

in"rnecr utue r trre ircunotput

brsom'

test-vector

nptrtconbioriion'

T,ble 1_15 hows

conpl;te

r't

ol te{

ve'tos ioriheJm

circuit*hen

" t',Ji.;

", "i;" ;;i*;.f

products

trcuir

he nri

rour

ectos

heck

ro.s,u"r."r r""rts

trt.Oa

gate- d the

$t dree

heck

or

$u'k''t

0 tdults

.",rt. elO

g"".,lt *.t *,;rtai

this

s suiucientb

elcct

lt single

tuck

t

r.r". t ou-foq

'om'mr1J ood

J'

I

e uoq

d rn

q"n''lre

F

aroF

f o . n r r l r . u i ' o r \ ' r d ' . I d r d rn r a

* r m p e r ' o u

r o ' r d e n ' r e ^

' e r u m

nated hid

ptrq;oh ro

qexk

high

qualiq

e$

vectors

rthet PLD

desiss'

(

IP,{

TC,ENABLEi,EXITINC,IIINDO

DooR,cArncEl

>

lalNl)

i ,

; ,

1 l

1 l

1 l

0l

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