pub const SMALL_CTX_BITS: usize = 7;Expand description
Sign-context index width of Ed25519SignCore: 128 contexts. Fused mode
admits at most 32 * NFB requests (one credit per fixed-base context),
so more contexts would only cost BRAM.
The controller asserts at construction that its admission credits fit in
the contexts, so with this width only NFB <= 4 and NCP = 0 (fused
mode) can be built; a compress machine needs 2,048 contexts.