The
Parallax
BASIC
Stamp 2sx: An
SX
based byte-code interpreter
See:
The PIC Source Book, BASIC STAMP assembly code
Member homepage for AW-AWC-O86
Decoding the BASIC Stamp
See also:
https://www.parallax.com/product/bs2sx-ic
http://www.emesys.com/BS2index.htm
Basic Stamp App Notes. Very complete including extensive math and I/O.