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// license:BSD-3-Clause
// copyright-holders:Roberto Zandona'
/*************************************************************************
HD63484 ACRTC
Advanced CRT Controller.
**************************************************************************/
#ifndef __HD63484_H__
#define __HD63484_H__
/* the on-chip FIFO is 16 bytes long, but we use a larger one to simplify */
/* decoding of long commands. Commands can be up to 64KB long... but Shanghai */
/* doesn't reach that length. */
#define FIFO_LENGTH 256
#define HD63484_RAM_SIZE 0x100000
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
class hd63484_device : public device_t
{
public:
hd63484_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
~hd63484_device() {}
DECLARE_READ16_MEMBER( status_r );
DECLARE_WRITE16_MEMBER( address_w );
DECLARE_WRITE16_MEMBER( data_w );
DECLARE_READ16_MEMBER( data_r );
DECLARE_READ16_MEMBER( ram_r );
DECLARE_READ16_MEMBER( regs_r );
DECLARE_WRITE16_MEMBER( ram_w );
DECLARE_WRITE16_MEMBER( regs_w );
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
private:
// internal state
std::unique_ptr<UINT16[]> m_ram;
UINT16 m_reg[256/2];
int m_fifo_counter;
UINT16 m_fifo[FIFO_LENGTH];
UINT16 m_readfifo;
UINT16 m_pattern[16];
int m_org, m_org_dpd, m_rwp;
UINT16 m_cl0, m_cl1, m_ccmp, m_edg, m_mask, m_ppy, m_pzcy, m_ppx, m_pzcx, m_psy, m_psx, m_pey, m_pzy, m_pex, m_pzx, m_xmin, m_ymin, m_xmax, m_ymax, m_rwp_dn;
INT16 m_cpx, m_cpy;
int m_regno;
int m_skattva_hack;
void doclr16( int opcode, UINT16 fill, int *dst, INT16 _ax, INT16 _ay );
void docpy16( int opcode, int src, int *dst, INT16 _ax, INT16 _ay );
int org_first_pixel( int _org_dpd );
void dot( int x, int y, int opm, UINT16 color );
int get_pixel( int x, int y );
int get_pixel_ptn( int x, int y );
void agcpy( int opcode, int src_x, int src_y, int dst_x, int dst_y, INT16 _ax, INT16 _ay );
void ptn( int opcode, int src_x, int src_y, INT16 _ax, INT16 _ay );
void line( INT16 sx, INT16 sy, INT16 ex, INT16 ey, INT16 col );
void circle( INT16 sx, INT16 sy, UINT16 r, INT16 col );
void paint( int sx, int sy, int col );
void command_w(UINT16 cmd);
};
extern ATTR_DEPRECATED const device_type HD63484;
#endif /* __HD63484_H__ */
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