[理工] [計組]-MIPS

看板Grad-ProbAsk作者NOtWorThy時間16年前 (2009/12/11 01:06)推噓3(3推 0噓 7→)

留言10則, 3人參與討論串3/7 (看更多)

1)假設指令word-aligned and immediate field is 12-bits what is the target range that a PC相對定址 branch 指令 can go to ?? 我想是 -2^11 ~ 2^11 - 1 but 答案正負 2^11 2) lw $4, 50($7) //start at 0x28 beq $1, $4, 3 //beq第3欄位是甚麼意思? add $5, $3, $4 sub $6, $4, $3 or $7, $5, $2 slt $8, $5, $6 假使branch taken則target addr. 是? 3)假設指令ADD R0, R1, R2, LSL#2 等價於 R0 = R1 + R2 x 4 則請用兩到ADD指令使 R0 = 99 x R1 LSL#2 如何推斷是表是2^2? 4)"TOM LIEN" using little endian , where each row content 4bytes ANS: [ ] [M] [O] [T] [N] [E] [I] [L] 為何下面不行?? [N] [E] [I] [L] [ ] [M] [O] [T] 煩請高手不吝賜教!! 謝謝!! -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 122.116.218.120

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wedent

12/11 03:15, , 1^F

12/11 03:15, 1^F

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wedent

12/11 03:21, , 2^F

12/11 03:21, 2^F

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wedent

12/11 03:23, , 3^F

12/11 03:23, 3^F