m68k_setup_user_interrupt
m68k_setup_user_interrupt(VEC_USER + 96, 16);
m68k_setup_user_interrupt(VEC_USER, NUM_ATARI_SOURCES - IRQ_USER);
m68k_setup_user_interrupt(VEC_USER, 192);
extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt);
m68k_setup_user_interrupt(VEC_USER, 192);
m68k_setup_user_interrupt(VEC_USER, 192);
m68k_setup_user_interrupt(VEC_USER, 128);