#include void __fastcall__ (*atari_exec_p)(char *) = (void __fastcall__ (*)(char *))0x600; #define atari_exec(x) ((*atari_exec_p)(x)) int main(int, char **) { puts("Loading D:RVERT.COM"); atari_exec("D:RVERT.COM"); puts("Loading D:FUJICHAT.RAW"); atari_exec("D:FUJICHAT.RAW"); puts("Should never get here!"); }