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Published on 2021-6-14 21:51 来自手机 Only look at the author

MCU newbie asks for help regarding data transfer instructions [Copy link]

Why is movx a,@ri followed by ((ri))→a and movx @ri,a followed by (a)→(ri)? (I really don’t know much

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njzr

sure Details Published on 2021-10-6 13:57

freebsder

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Published on 2021-6-15 09:24 来自手机 Only look at the author

->You can think of it as the data transfer direction. ((ri))->a means putting the indirect address into a. The data transfer direction of the assembly format of an instruction system is the same. Either it flows from the second place to the left to the first place, which is usually the case with GNU assembly, or vice versa, which is usually the case with Intel assembly.

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kiverin

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Published on 2021-8-2 14:17 Only look at the author

MOVX cannot use indirect addressing as the target address, so @Ri can only be the source address

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njzr

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Published on 2021-10-6 13:57 Only look at the author

kiverin posted on 2021-8-2 14:17 MOVX cannot use indirect addressing as the target address, so @Ri can only be the source address

sure

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