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/*****************************************************************************
*
* includes/concept.h
*
* Corvus Concept driver
*
* Raphael Nabet, 2003
*
****************************************************************************/
#ifndef CONCEPT_H_
#define CONCEPT_H_
#include "machine/6522via.h"
#include "machine/mos6551.h"
#include "machine/concept_exp.h"
#define ACIA_0_TAG "acia0"
#define ACIA_1_TAG "acia1"
/* keyboard interface */
enum
{
KeyQueueSize = 32,
MaxKeyMessageLen = 1
};
class concept_state : public driver_device
{
public:
concept_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_acia0(*this, ACIA_0_TAG),
m_acia1(*this, ACIA_1_TAG),
m_videoram(*this,"videoram") { }
required_device<cpu_device> m_maincpu;
required_device<mos6551_device> m_acia0;
required_device<mos6551_device> m_acia1;
required_shared_ptr<UINT16> m_videoram;
concept_exp_port_device *m_exp[4];
ioport_port *m_key[6];
UINT8 m_pending_interrupts;
char m_clock_enable;
char m_clock_address;
UINT8 m_KeyQueue[KeyQueueSize];
int m_KeyQueueHead;
int m_KeyQueueLen;
UINT32 m_KeyStateSave[3];
DECLARE_READ16_MEMBER(concept_io_r);
DECLARE_WRITE16_MEMBER(concept_io_w);
virtual void machine_start();
virtual void video_start();
UINT32 screen_update_concept(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
INTERRUPT_GEN_MEMBER(concept_interrupt);
DECLARE_READ8_MEMBER(via_in_a);
DECLARE_WRITE8_MEMBER(via_out_a);
DECLARE_READ8_MEMBER(via_in_b);
DECLARE_WRITE8_MEMBER(via_out_b);
DECLARE_WRITE8_MEMBER(via_out_cb2);
void concept_set_interrupt(int level, int state);
inline void post_in_KeyQueue(int keycode);
void poll_keyboard();
};
/*----------- defined in machine/concept.c -----------*/
extern const via6522_interface concept_via6522_intf;
#endif /* CONCEPT_H_ */
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