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ELEC 274 EXAM WITH 100- CORRECT ANSWERS.
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ELEC 274 EXAM WITH 100- CORRECT ANSWERS.
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ELEC 274 EXAM WITH 100%CORRECT ANSWERS
Write the definition of Computer Architecture
Specification of a set of instructions and specification of the
behavior of hardware units to implement those instructions.
Write the definition of Instruction Set Architecture
The conceptual structure and functional behavior of a computer
system as seen by the assembly-language programmer, including
machine instructions and their formats, addressing modes, data
representation, and storage organization
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What are the 5 units of a computer system
input, output, memory, arithmetic/logic, control
How many bits are used for an immediate value
16
Write the Five-Step Process for Instructions
, 1. Fetch Instruction and Increment PC
2. Decode instruction, read source register(s), prepare immediate
value if applicable
3. Compute effective address or ALU result
4. Read or write memory for Load and Store, or perform no action
5. Write ALU or memory result into register, or perform no action
Show the Five-Step Process for Instructions in RTN
1. Memory address <- [PC], Read memory, IR,<- Memory data, PC <-
[PC] +4
2. Decode instruction, RA <- [Rs], RB <-[Rt], prepare immediate
value
3. RZ <- [RA] +immediate value X from IR
4. Memory address <- [RZ], Read Memory, RY <- Memory data, RY <-
[RY]
5. Rt <- [RY]
List the Initial Assembly Directives for a Nios || DEO program
.equ JTAG_UART_BASE, 0x10001000
.equ DATA_OFFSET, 0
.equ STATUS_OFFSET, 4
.equ WSPACE_MASK, 0xFFFF
.text
.global _start
.org 0x0000
_start:
Write the complete GetChar subroutine
GetChar:
subi sp, sp, 8
stw r3, 0(sp)
stw r4, 4(sp)
movia r3, JTAG_USER_BASE
gc_loop:
ldwio r4, DATA_OFFSET(r3)
mov r2, r4
andi r4, r4, 0x8000
beq r4, r0, gc_loop
andi r2, r2, 0xFF
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