Computerarchitecture

Question 1

How to access devices?

Answer 1

Through OS - DMa, memory mapped io, special cpu instructions in and out
Through user program
Special bs function

Question 2

Io Port -5 Register

Question 3

in out instructions
Different address room

Answer 3

Access controlled by OS
CPU must control access

Question 4

Together address
Mov RO,00ff44

Answer 4

True:
Access right through Seitentabeln
Efficient reading and workout
Access through c,c*+ direkt possible
Problem
Bus architecture
Caching must be off

Question 5

Together address
Mov RO,00ff44

Answer 5

True:
Access right through Seitentabeln
Efficient reading and workout
Access through c,c*+ direkt possible
Problem
Bus architecture
Caching must be off

Question 6

Direkt Memory Access

Answer 6

Io Ports and Memory mapped io brauchen viel CPU Zeit
Direkt Memory Access
DMA control which device which bytes and where to save

Question 7

Jeder PC hat einen PIC

Answer 7

programmable interrupt controller
8 differenc