ref: abb4ed071d8c4ae2cd77b1f54ea39f8d8ddc73a9
dir: /os/boot/bitsy/fns.h/
/* * functions defined locally */ extern int gunzip(uchar *out, int outn, uchar *in, int inn); extern void delay(int ms); extern void serialputs(char *str, int n); extern void draincache(void);