
Colocviu 2023
Authored by Rares478 Rares478
Computers
University
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26 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Se dau specificatiile de mai jos pentru proiectare de memorie dinamica(DRAM):
-Capacitatea 512Mb
-Organizarea pe cuvant(16biti) cu posibilitatea de adresare si pe octet(8biti)
-Caracteristicile magistralei(magistrala ISA):
32 de linii de adresa
16 linii de data
semnale de comanda: MRDC si MWTC
-Adresa de inceput A0.0000H
-Se folosesc circuite de memorie de 64M*8biti
Multiplexorul de adrese are x intrari si y iesiri
Numarul de submodule este z
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Se dau urmatorii parametrii de proiectare a unei interfete
2 canale analogice de intrare
4 canale de iesire analogice, demultiplexate
8 intrari digitale
8 iesiri digitale
adresa de baza 300H
interfata se conecteaza pe o magistrala ISA
Indentificati greselile de proiectare a interfetei in figurile de mai jos si alegeti din lista de raspunsuri
trebuie demultiplexor pentru cele 4 iesiri analogice
intrarile analogice trebuie conectate la un convertor analog-digital
registrul de intrari nu se poate asocia cu registrul de stare
registrul de comanda nu are nevoie de semnal de selectie
adresele nu sunt bine distribuite
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce semnale se folosesc pentru generarea semnalelor de schip-select/enable a circuitelor de memorie dintr-un submodel?
SEL-i, A0, BHE
SEL-MODUL, BHE, A0
BHE, MWR, SEL-i
A0, BHE
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Selectati instructiunile corecte
MOV AL, 300
XOR CL, FFFH
ADD sir[ESI], AX
MOV EAX, [EBP+ESI*2]
MUL EDX
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Indicati continutul registrilor EAX si ECX (in zecimal) dupa executia urmatoarei secvente de cod:
mov eax, 32
mov ecx, 2
et:
shr eax, 1
loop et
eax =
ecx =
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Se considera proiectarea unei memorii statice (SRAM) cu capacitatea de 2 MB, circuite de memorie de 256k*8biti si adresa de start B000H.
Ce este gresit in proiectarea de mai jos?
semnalul Sel-i nu se foloseste in generarea semnalelor de tip chip-select din submodel
adresa de start este verificata/calculata gresit in poarta logica
numarul de intrari si iesiri din decodificator
numarul de submodule
numarul de adrese ce intra in circuitele de memorie
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Indicati continutul registrilor EDI, ECX si EAX (in zecimal) dupa executia urmatoarei secvente de cod:
.data
sir1 db 5, 10, 15, 3, 2
sir2 db 10 dup(0)
.code
mov eax,0
mov ecx,5
lea esi, sir1
mov edi, 0
et: mov al, [esi]
cmp al,0
jb urm
cmp al, 9
ja urm
mov sir2[edi], al
inc edi
jmp edi
jmp urm
urm: inc esi
loop et
EDI =
ECX =
EAX =
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