#ifdef initialize
#  msg . 6502 wrapper module
#  define tspsize 0
#elif routines
#  define init         init_6502
#  define xalloc       xalloc_6502
#  define xpage        xpage_6502
#  define xrealloc     xrealloc_6502
#  define xfree        xfree_6502
#  define losecontext  losecontext_6502
#  define getcontext   getcontext_6502
#endif