overlays where possible. Use a faster call stub, or optionally at compile time, a more compact stub. Double size of _ovly_buf_table so that low bit of _ovly_table.buf can be used as a "present" bit. Reserve an extra _ovly_table entry for index zero.
The files in this directory are sourced by genscripts.sh, after setting some variables to substitute in, to produce C source files that contain jump tables for each emulation.