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/**********************************************************************
SMC CRT9021 Video Attributes Controller (VAC) emulation
Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************
_____ _____
D0 1 |* \_/ | 28 D1
MS0 2 | | 27 D2
MS1 3 | | 26 D3
REVID 4 | | 25 D4
CHABL 5 | | 24 D5
BLINK 6 | | 23 D6
INTIN 7 | CRT9021 | 22 D7
+5V 8 | | 21 _VSYNC
ATTEN 9 | | 20 GND
INTOUT 10 | | 19 SL0/SLD
CURSOR 11 | | 18 SL1/_SLG
RETBL 12 | | 17 SL2/BLC
_LD/SH 13 | | 16 SL3/BKC
VIDEO 14 |_____________| 15 VDC
**********************************************************************/
#pragma once
#ifndef __CRT9021__
#define __CRT9021__
#include "emu.h"
//**************************************************************************
// MACROS / CONSTANTS
//**************************************************************************
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_CRT9021_ADD(_tag, _clock, _config) \
MCFG_DEVICE_ADD(_tag, CRT9021, _clock) \
MCFG_DEVICE_CONFIG(_config)
#define CRT9021_INTERFACE(name) \
const crt9021_interface (name) =
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> crt9021_interface
struct crt9021_interface
{
const char *screen_tag; /* screen we are acting on */
devcb_read8 in_data_func;
devcb_read8 in_attr_func;
devcb_read_line in_atten_func;
};
// ======================> crt9021_device_config
class crt9021_device_config : public device_config,
public crt9021_interface
{
friend class crt9021_device;
// construction/destruction
crt9021_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock);
public:
// allocators
static device_config *static_alloc_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock);
virtual device_t *alloc_device(running_machine &machine) const;
protected:
// device_config overrides
virtual void device_config_complete();
};
// ======================> crt9021_device
class crt9021_device : public device_t
{
friend class crt9021_device_config;
// construction/destruction
crt9021_device(running_machine &_machine, const crt9021_device_config &_config);
public:
DECLARE_WRITE_LINE_MEMBER( slg_w );
DECLARE_WRITE_LINE_MEMBER( sld_w );
DECLARE_WRITE_LINE_MEMBER( cursor_w );
DECLARE_WRITE_LINE_MEMBER( retbl_w );
DECLARE_WRITE_LINE_MEMBER( vsync_w );
void update_screen(bitmap_t *bitmap, const rectangle *cliprect);
protected:
// device-level overrides
virtual void device_start();
virtual void device_clock_changed();
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
private:
devcb_resolved_read8 m_in_data_func;
devcb_resolved_read8 m_in_attr_func;
devcb_resolved_read_line m_in_atten_func;
screen_device *m_screen;
int m_slg;
int m_sld;
int m_cursor;
int m_retbl;
int m_vsync;
const crt9021_device_config &m_config;
};
// device type definition
extern const device_type CRT9021;
#endif
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