extern WRITE8_HANDLER ( pc_t1t_p37x_w );
extern  READ8_HANDLER ( pc_t1t_p37x_r );

extern WRITE8_HANDLER ( tandy1000_pio_w );
extern  READ8_HANDLER(tandy1000_pio_r);

extern NVRAM_HANDLER( tandy1000 );

INPUT_PORTS_EXTERN( t1000_keyboard );