Re: 8051 and a C switch statement

robertwessel2@xxxxxxxxx wrote:

The C standard (C89/90) requires that the implementation support at
least 257 labels in a switch statement. This is unlikely to be an
issue for an 8052.

To at least some extent it is. A jump table on an 8052 can only comfortably host about 120 entries, because of the limited reach of the indirect jmp and the length of the jmp instruction it leads to.

So a switch with more than those 120 entries will have to be slower than others.
.

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