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/*****************************************************************************
*
* machine/tpi6525.h
*
* mos tri port interface 6525
* mos triple interface adapter 6523
*
* peter.trauner@jk.uni-linz.ac.at
*
* used in commodore b series
* used in commodore c1551 floppy disk drive
*
* tia6523 is a tpi6525 without control register!?
*
* tia6523
* only some lines of port b and c are in the pinout!
*
* connector to floppy c1551 (delivered with c1551 as c16 expansion)
* port a for data read/write
* port b
* 0 status 0
* 1 status 1
* port c
* 6 dav output edge data on port a available
* 7 ack input edge ready for next datum
*
****************************************************************************/
#ifndef __TPI6525_H__
#define __TPI6525_H__
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
struct tpi6525_interface
{
devcb_write_line out_irq_func;
devcb_read8 in_pa_func;
devcb_write8 out_pa_func;
devcb_read8 in_pb_func;
devcb_write8 out_pb_func;
devcb_read8 in_pc_func;
devcb_write8 out_pc_func;
devcb_write_line out_ca_func;
devcb_write_line out_cb_func;
};
/***************************************************************************
DEVICE CONFIGURATION MACROS
***************************************************************************/
class tpi6525_device : public device_t
{
public:
tpi6525_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
~tpi6525_device() { global_free(m_token); }
// access to legacy token
void *token() const { assert(m_token != NULL); return m_token; }
protected:
// device-level overrides
virtual void device_config_complete();
virtual void device_start();
virtual void device_reset();
private:
// internal state
void *m_token;
};
extern const device_type TPI6525;
#define MCFG_TPI6525_ADD(_tag, _intrf) \
MCFG_DEVICE_ADD(_tag, TPI6525, 0) \
MCFG_DEVICE_CONFIG(_intrf)
/***************************************************************************
FUNCTION PROTOTYPES
***************************************************************************/
DECLARE_READ8_DEVICE_HANDLER( tpi6525_r );
DECLARE_WRITE8_DEVICE_HANDLER( tpi6525_w );
DECLARE_READ8_DEVICE_HANDLER( tpi6525_porta_r );
DECLARE_WRITE8_DEVICE_HANDLER( tpi6525_porta_w );
DECLARE_READ8_DEVICE_HANDLER( tpi6525_portb_r );
DECLARE_WRITE8_DEVICE_HANDLER( tpi6525_portb_w );
DECLARE_READ8_DEVICE_HANDLER( tpi6525_portc_r );
DECLARE_WRITE8_DEVICE_HANDLER( tpi6525_portc_w );
WRITE_LINE_DEVICE_HANDLER( tpi6525_i0_w );
WRITE_LINE_DEVICE_HANDLER( tpi6525_i1_w );
WRITE_LINE_DEVICE_HANDLER( tpi6525_i2_w );
WRITE_LINE_DEVICE_HANDLER( tpi6525_i3_w );
WRITE_LINE_DEVICE_HANDLER( tpi6525_i4_w );
UINT8 tpi6525_get_ddr_a(device_t *device);
UINT8 tpi6525_get_ddr_b(device_t *device);
UINT8 tpi6525_get_ddr_c(device_t *device);
#endif /* __TPI6525_H__ */
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