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// license:BSD-3-Clause
// copyright-holders:Philip Bennett
/***************************************************************************
tlc34076.h
Basic implementation of the TLC34076 palette chip and similar
compatible chips.
***************************************************************************/
#ifndef MAME_VIDEO_TLC34076_H
#define MAME_VIDEO_TLC34076_H
#pragma once
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
class tlc34076_device : public device_t
{
public:
enum tlc34076_bits
{
TLC34076_6_BIT = 6,
TLC34076_8_BIT = 8
};
// construction/destruction
tlc34076_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// configuration helpers
void set_bits(tlc34076_bits bits) { m_dacbits = bits; }
// public interface
const rgb_t *get_pens();
DECLARE_READ8_MEMBER(read);
DECLARE_WRITE8_MEMBER(write);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
private:
// internal state
uint8_t m_local_paletteram[0x300];
uint8_t m_regs[0x10];
uint8_t m_palettedata[3];
uint8_t m_writeindex;
uint8_t m_readindex;
uint8_t m_dacbits;
rgb_t m_pens[0x100];
};
/***************************************************************************
DEVICE CONFIGURATION MACROS
***************************************************************************/
#define MCFG_TLC34076_ADD(tag, bits) \
MCFG_DEVICE_ADD((tag), TLC34076, 0) \
downcast<tlc34076_device &>(*device).set_bits((tlc34076_device::bits));
DECLARE_DEVICE_TYPE(TLC34076, tlc34076_device)
#endif // MAME_VIDEO_TLC34076_H
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