🚀 go-pugleaf

Please try to keep your lines a bit shorter :-)

> How do I make constant tables?
> 
> I write code for an embedded system. Lookup tables in ROM are a pretty 
> useful thing and I just couldn't find a way to do it.

Depending on your compiler, you may find the literal data being put in an 
unexpected segment, and then copied to a literal constant. It is 
sometimes easier to put this sort of thing into a fixed location in 
memory, accessed by an absolute variable.

> Did I miss something?
> 
> Something like
> [BEGIN EXAMPLE]
> VAR
>   myTable : ARRAY [0..9] OF CARDINAL = [0, 6, 2, 5, 1, 3, 4, 9, 8, 7];
> [END EXAMPLE]

Depends very much on the compiler. Under TopSpeed (which we use for 
embedded '386):

TYPE    tableType= ARRAY[0..9] OF CARDINAL;

CONST   myTable= tableType(0, 6, 2, 5, 1, 3, 4, 9, 8, 7);

Mark Morgan Lloyd
mark_tbu@cix.compulink.co.uk

[Opinions above are the author's, not those of his employers or 
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