[理工] [計組] branch delay slot
題目:
(1)具full forward.可insert NOP (2)不具stall和forward.可insert NOP
haz: move $5,$0 Copy:lw $10,1000($20)
lw $10,1000($20) sw $10,2000($20)
addiu $20,$20,-4 addiu $20,$20,-4
addu $5,$5,$10 bne $20,$20,Copy
bne $20,$0,haz
問題:
(1)採From before搬addu
(2)採From target搬lw
想問的是為什麼(2)可以搬lw? $20不會有問題嗎? 謝謝
感謝各位耐心看完問題 , (1)只是打出來給各位參考 , 和問題無關 , 謝謝.
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推
11/14 23:53, , 1F
11/14 23:53, 1F
→
11/14 23:53, , 2F
11/14 23:53, 2F
→
11/14 23:55, , 3F
11/14 23:55, 3F
推
11/15 00:00, , 4F
11/15 00:00, 4F
→
11/15 00:01, , 5F
11/15 00:01, 5F
→
11/15 00:03, , 6F
11/15 00:03, 6F
推
11/15 00:04, , 7F
11/15 00:04, 7F
→
11/15 00:04, , 8F
11/15 00:04, 8F
→
11/15 00:05, , 9F
11/15 00:05, 9F
→
11/15 00:10, , 10F
11/15 00:10, 10F
→
11/15 00:11, , 11F
11/15 00:11, 11F
→
11/15 00:13, , 12F
11/15 00:13, 12F
推
11/15 00:16, , 13F
11/15 00:16, 13F
→
11/15 00:17, , 14F
11/15 00:17, 14F
→
11/15 00:17, , 15F
11/15 00:17, 15F
→
11/15 00:23, , 16F
11/15 00:23, 16F