ACC is the official ACS compiler.

Alternative ACS compilers: BCC, GDCC.

ACSUtils has a lot more than 256 functions, but official releases of ACC can't compile programs with more than 256 functions.

To fix this, download the April 26, 2017 unofficial development build of ACC for Windows: http://acsutils.strangled.net/lib/exe/fetch.php?media=acc-1.56-beta-g3256a3e.zip

int SomeArray[] = {
    1,
    3.14159,
    "string"
}

Can result in 1 and 3.14159 getting corrupted.

ACC incorrectly writes initial array values, resulting in some numbers getting interpreted as string indices and recalculated to avoid string index conflicts between libraries.

This bug only affects non-local arrays and happens randomly, usually only with large arrays.

To avoid this bug, do not use static initialization with non-local arrays, instead, declare an empty array and initialize it in a function:

int SomeArray[3];

function void InitArrays()
{
    int i = 0;
    SomeArray[i++] = 1;
    SomeArray[i++] = 3.14159;
    SomeArray[i++] = "string";
}