题目：
Addressing modes constitute a very important topic when people discuss alterna
tive designs of CPUs. Common addressing modes include register, immediate, dir
ect, and PC-relative mode, etc. Find a wrong statement from the following choi
ces.
(A)
Every CPU supports the direct addressing mode.
(B)
In practice, having immediate, direct, register, and indexed mode is enough fo
r almost all applications.
(C)
Compilers are in charge of finding the best addressing modes for statements wr
itten in high-level languages.
(D)
When offering a limited number of addressing modes, the architecture must make
sure that common applications will be computable.
(E)
none of the above.
答案是给A，我不是很明白为什么，有办法举出反例之类的吗，比如哪一种架构的电脑不
使用直接寻址(只使用其他的寻址方式)？
B选项的indexed mode也不是很懂...

题目说找错误的选项欸，所以A是错的吧indexed mode我上网查了一下，和Base addressing mode差不多，可参考啊啊 网址太长了贴不下反正打computer architecture indexed mode会有啦

使用mips的就不会support喔只有课本上那五种 另外像是stack machine也不会有

可以参考MSP430的架构，addressing mode有很多种