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// license:BSD-3-Clause
// copyright-holders:hap
/*
Epson SED1500 series LCD Driver
*/
#ifndef MAME_VIDEO_SED1500_H
#define MAME_VIDEO_SED1500_H
#pragma once
/*
pinout reference (brief)
OSC: oscillator (resistors or XTAL)
A0-A6: address
D0-D7: data (I/O)
WR/RD: write/read signal
CS: chip select
SYNC: frame synchronize (I/O)
CL: OSC output
COM: LCD commons
SEG: LCD segments
*/
class sed1500_device : public device_t
{
public:
sed1500_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
// configuration helpers
auto write_segs() { return m_write_segs.bind(); } // common number in offset, segment data in data
void write(offs_t offset, u8 data);
u8 read(offs_t offset);
protected:
sed1500_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, u8 cmax, u8 smax);
// device-level overrides
virtual void device_start() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
emu_timer *m_lcd_timer;
const u8 m_cmax; // number of COL pins
const u8 m_smax; // number of SEG pins
u8 m_mode = 0;
u8 m_cout = 0;
u8 m_ram[0x80];
// callbacks
devcb_write64 m_write_segs;
};
class sed1501_device : public sed1500_device
{
public:
sed1501_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
};
class sed1502_device : public sed1500_device
{
public:
sed1502_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
};
class sed1503_device : public sed1500_device
{
public:
sed1503_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
};
DECLARE_DEVICE_TYPE(SED1500, sed1500_device)
DECLARE_DEVICE_TYPE(SED1501, sed1501_device)
DECLARE_DEVICE_TYPE(SED1502, sed1502_device)
DECLARE_DEVICE_TYPE(SED1503, sed1503_device)
#endif // MAME_VIDEO_SED1500_H
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