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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Seiko-Epson SED1330 LCD Controller emulation
**********************************************************************/
#ifndef MAME_VIDEO_SED1330_H
#define MAME_VIDEO_SED1330_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> sed1330_device
class sed1330_device : public device_t,
public device_memory_interface,
public device_video_interface
{
public:
// construction/destruction
sed1330_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
uint8_t status_r();
void command_w(uint8_t data);
uint8_t data_r();
void data_w(uint8_t data);
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
// device_memory_interface overrides
virtual space_config_vector memory_space_config() const override;
// optional information overrides
virtual const tiny_rom_entry *device_rom_region() const override;
private:
int m_bf; // busy flag
uint8_t m_ir; // instruction register
uint8_t m_dor; // data output register
int m_pbc; // parameter byte counter
int m_d; // display enabled
int m_sleep; // sleep mode
uint16_t m_sag; // character generator RAM start address
int m_m0; // character generator ROM (0=internal, 1=external)
int m_m1; // character generator RAM D6 correction (0=no, 1=yes)
int m_m2; // height of character bitmaps (0=8, 1=16 pixels)
int m_ws; // LCD drive method (0=single, 1=dual panel)
int m_iv; // screen origin compensation for inverse display (0=yes, 1=no)
int m_wf; // AC frame drive waveform period (0=16-line, 1=2-frame)
int m_fx; // character width in pixels
int m_fy; // character height in pixels
int m_cr; // visible line width in characters
int m_tcr; // total line width in characters (including horizontal blanking)
int m_lf; // frame height in lines
uint16_t m_ap; // virtual screen line width in characters
uint16_t m_sad1; // display page 1 start address
uint16_t m_sad2; // display page 2 start address
uint16_t m_sad3; // display page 3 start address
uint16_t m_sad4; // display page 4 start address
int m_sl1; // display block 1 height in lines
int m_sl2; // display block 2 height in lines
int m_hdotscr; // horizontal dot scroll in pixels
int m_fp; // display page flash control
uint16_t m_csr; // cursor address register
int m_cd; // cursor increment direction
int m_crx; // cursor width
int m_cry; // cursor height or location
int m_cm; // cursor shape (0=underscore, 1=block)
int m_fc; // cursor flash control
int m_mx; // screen layer composition method
int m_dm; // display mode for pages 1, 3
int m_ov; // graphics mode layer composition
// address space configurations
const address_space_config m_space_config;
memory_access<16, 0, 0, ENDIANNESS_LITTLE>::cache m_cache;
inline uint8_t readbyte(offs_t address);
inline void writebyte(offs_t address, uint8_t m_data);
inline void increment_csr();
void draw_text_scanline(bitmap_ind16 &bitmap, const rectangle &cliprect, int y, int r, uint16_t va, bool cursor);
void draw_graphics_scanline(bitmap_ind16 &bitmap, const rectangle &cliprect, int y, uint16_t va);
void update_graphics(bitmap_ind16 &bitmap, const rectangle &cliprect);
void update_text(bitmap_ind16 &bitmap, const rectangle &cliprect);
void sed1330(address_map &map);
};
// device type definition
DECLARE_DEVICE_TYPE(SED1330, sed1330_device)
#endif // MAME_VIDEO_SED1330_H
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