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// license:BSD-3-Clause
// copyright-holders:smf
/* CAT702 security chip */
#ifndef MAME_MACHINE_CAT702_H
#define MAME_MACHINE_CAT702_H
#pragma once
DECLARE_DEVICE_TYPE(CAT702, cat702_device)
class cat702_device : public device_t
{
public:
cat702_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// configuration helpers
auto dataout_handler() { return m_dataout_handler.bind(); }
DECLARE_WRITE_LINE_MEMBER(write_select);
DECLARE_WRITE_LINE_MEMBER(write_datain);
DECLARE_WRITE_LINE_MEMBER(write_clock);
protected:
virtual void device_start() override;
private:
uint8_t compute_sbox_coef(int sel, int bit);
void apply_bit_sbox(int sel);
void apply_sbox(const uint8_t *sbox);
optional_memory_region m_region;
uint8_t m_transform[8];
int m_select;
int m_clock;
int m_datain;
uint8_t m_state;
uint8_t m_bit;
devcb_write_line m_dataout_handler;
};
#endif // MAME_MACHINE_CAT702_H
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