P3s InterfazParalela-Interrup 15 2

7/23/2019 P3s InterfazParalela-Interrup 15 2

1/20

UNIVERSIDAD NACIONAL

MAYOR DE SAN MARCOS

Decana de America ACULTAD DE INGENIERA DE

SISTEMAS E IN ORMATICA

ARQUITECTURA DE COMPUTADORAS

2015 - 2

Mg. JUAN CAROS !ON"AES SUARE"


2/20

In#er$ace% Para&e&a%


3/20

DMU'

de

da#(%

O)#-0

O)#-1

O)#-*

O)#-2

++

++

MU'

de

da#(%++

In-0

In-1

In-*

In-2

++

Se&ec#(re%Se&ec#(re%

C(n#r(& de ,ari(% )er#(% ara&e&(%

O)#)#

de& )P

De& )%

de

Da#(%

In)#

de& )P

De&)%

de

Da#(%

Ar/)i#ec#)ra de C(m)#ad(ra%Mg. J)an Car&(% !(na&e% S)re


4/20

Da#a

)$$er

D 3 D0

DIA!RAMA INTERNO

C(n#r(&

!r)( A

InternalDa

taBus

C(n#r(&

(gic

4CS

4RD

4R

A1A0

RESET

!r)( A

P)er#( A

Pa-Pa0

!r)( A

P)er#( C

S)eri(r

Pc-Pc6

!r)(

P)er#( C

In$eri(r

Pc7-Pc0

!r)( P)er#(

P8-P80C(n#r(&

!r)

(



5/20

In#er$ace Peri$9rica Pr(grama8&e :PPI;


6/20

7 6 5 4 3 2 1 0

1

P(r# -P(r# C :C7-C0;

1/0 = entrada/salida

M(d(+ 00 > 01

P(r# A 3P(r# C :C-C6;

1/0 = entrada/salida

M(d( + 00? 01 > 1'

Regi%#r( de C(n#r(&

!r)( A !r)(


A1 A0 @)ncin

0 0 P)er#( A

0 1 P)er#(

1 0 P)er#( C

1 1 Reg de C(n#r(&

Direccin de P)er#(%

Modo 0Ports A,B y C como entrada o salida

Modo 1Port A y B como entrada o salida,

Port C como Control de A y B

Modo 2Port A idireccional,

Port C como Control de A


7/20

In#er$ace Peri$9rica Pr(grama8&e


8/20

In#err)ci(ne%



9/20

In#err)ci(ne%

In#err)men e& $&)( de& r(grama.

&aman a )n Pr(cedimien#( ara Ser,ici( de In#err)cin

( )n Manead(r de In#err)cin

&amada generada (r =ardare? de%de e& e*#eri(r?

&amada generada (r S($#are ? %(n in#erna%.

Ti(% de In#err)ci(ne%



10/20

In#err)ci(ne% (r =ardare

S(n in#err)ci(ne% direc#a% a& Pr(ce%ad(r

8. Segn Pri(ridad NMI : In#err)cin n( enma%cara8&e ; INTR e INTA : In#err)cin enma%cara8&e ;?

@&ag I de8e e%#ar en a(.

Ti(% +

a. Segn $(rma de %eFa&

8. Segn Pri(ridad

c. Segn @(rma de A#encin

a. Segn @(rma de SeFa& .- P(r @&anc( ( cam8i(% de ni,e& P(r Ni,e&? ni,e& &gic( d)ran#e )n #iem(



11/20

)P

INTINTA

c. Segn @(rma de A#encin

. Sa( a Direccin @ia

INT

INTA

In%#r)ccin

)P In#er$ace =D

. En,G( de In%#r)ccin

In#er$ace HD

Direc.@ia

Mem(riaRD



12/20

In#err)cin de S($#are

INT n

n :


13/20

In#err)ci(ne% (r S($#are

ec#(r de In#err)cin re%er,ad(% (r $a8rican#e. En e& m(d( Rea&CS 0000.

Err(r a& di,idir0B 3 7B0

@)ncinDireccin :IP;Nmer(

Pa%( a a%(6B 3 B1

NMI :In#err)cin de =;


14/20

)P

In#er$ac

e

dec(n#r(&

de

In#err)

ci(ne%

INT

INTA

Mane( de In#err)ci(ne% en &a PC

In#er$a

de&

di%.2

Di%.

@G%ic(

2

In#er$a

de&di%.1

Di%.

@G%ic(1

In#er$a

de&di%.n

Di%.

@G%ic(

n

++

M9#(d(% + In# > P(&&ing



15/20

A0

Read4

ri#e

(gic

4CS

4RD

4R

DIA!RAMA INTERNO + PIC

Ca%cade

C(n#r(&4C(mare

CAS0

CAS1CAS2

4SP

)$$er

De Da#(%

D

D0

In#erna&Da#a.)%

IRQ0

IRQ1IRQ2

+

+

IRQ

Regi%#r(De

Re/)erir

In#err).

IRR

Pri(-ri#>

Re%(&-

,er

Regi%#r( de M%cara de In#.

IMR

Regi%#r(de

Ser,ici(

ISR

gica de C(n#r(&

4INTA 4INT



16/20

C(n#r(&ad(r Pr(grama8&e de In#err)ci(ne%


17/20

Agrega < in#err)ci(ne% c(n ec#(r > Pri(ridade% c(di$icada% a& r(ce%ad(r

a c(m)#ad(ra AT #iene d(%


18/20

@UNCIONAMIENTO DE (r ri(ridad en ISR. Se 8(rra IRR.

. En %g#e. cic&( de )P:INTA;? PIC en,ia e& nmer( de In#.

. En e& m(d( A)#(ma#ic(? e& 8i# de &a in#. en e& ISR e% 8(rrad(.

1. Una ( m% &Gnea% IRQ %(n ac#i,ada% (r &(% eri$9ric(%.

7. E& en,a INT a& )P.6. CPU rec(n(ce &a in#err)cin? en,Ga &a %eFa& -INTA.

2. Se ac#i,a e& c(rre%(ndien#e 8i# de& IRR.

INT

INTA

Da#(:


19/20

INT

Da#(:


20/20

!racia%

J)an Car&(% !(na&e% S)are

)ancg(na&e%%>aB((.c(m

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P3s InterfazParalela-Interrup 15 2