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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
RCA CDP1862 COS/MOS Color Generator Controller emulation
**********************************************************************
_____ _____
RD 1 |* \_/ | 24 Vdd
_RESET 2 | | 23 R LUM
_CON 3 | | 22 G LUM
B CHR 4 | | 21 GD
B LUM 5 | | 20 BKG LUM
BKG 6 | CDP1862 | 19 G CHR
_LD CLK 7 | | 18 R CHR
STP 8 | | 17 BKG CHR
CLK OUT 9 | | 16 BD
_SYNC 10 | | 15 BURST
LUM IN 11 | | 14 _XTAL
Vss 12 |_____________| 13 XTAL
**********************************************************************/
#ifndef MAME_VIDEO_CDP1862_H
#define MAME_VIDEO_CDP1862_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> cdp1862_device
class cdp1862_device : public device_t,
public device_video_interface
{
public:
// construction/destruction
cdp1862_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock);
auto rdata_cb() { return m_read_rd.bind(); }
auto bdata_cb() { return m_read_bd.bind(); }
auto gdata_cb() { return m_read_gd.bind(); }
void set_luminance(double r, double b, double g, double bkg) { m_lum_r = r; m_lum_b = b; m_lum_g = g; m_lum_bkg = bkg; }
void set_chrominance(double r, double b, double g, double bkg) { m_chr_r = r; m_chr_b = b; m_chr_g = g; m_chr_bkg = bkg; }
void dma_w(uint8_t data);
void bkg_w(int state);
void con_w(int state);
uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
private:
inline void initialize_palette();
devcb_read_line m_read_rd;
devcb_read_line m_read_bd;
devcb_read_line m_read_gd;
bitmap_rgb32 m_bitmap; // bitmap
double m_lum_r; // red luminance resistor value
double m_lum_b; // blue luminance resistor value
double m_lum_g; // green luminance resistor value
double m_lum_bkg; // background luminance resistor value
double m_chr_r; // red chrominance resistor value
double m_chr_b; // blue chrominance resistor value
double m_chr_g; // green chrominance resistor value
double m_chr_bkg; // background chrominance resistor value
rgb_t m_palette[16];
int m_bgcolor; // background color
int m_con; // color on
};
// device type definition
DECLARE_DEVICE_TYPE(CDP1862, cdp1862_device)
#endif // MAME_VIDEO_CDP1862_H
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