The Mobile Programming System: STAGE2
STAGE2 is the second level of a bootstrap sequence which
is easily implemented on any computer.  It is a flexible,
provided by STAGE2 are summarized, and the implementation techniques
which have made it possible to have STAGE2 running on a new
machine with less than one man-week of effort are discussed.  The approach
has been successful on over 15 machines of widely varying
characteristics.
CACM July, 1970
Waite, W. M.
