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// license:BSD-3-Clause
// copyright-holders:Juergen Buchmueller
/**********************************************************************
Rockwell RA17xx (e.g. A1752, A1753) ROM, RAM and I/O chip
Juergen Buchmueller <pullmoll@t-online.de>
The device integrates a 2048 x 8 ROM, a 128 x 4 RAM and
and 16 I/O ports at one of the port ranges 00 ... 0f,
20 ... 2f, 40 ... 4f or 60 ... 6f.
**********************************************************************/
#ifndef MAME_MACHINE_RA17XX_H
#define MAME_MACHINE_RA17XX_H
#pragma once
#include "cpu/pps4/pps4.h"
class ra17xx_device : public device_t
{
public:
ra17xx_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock);
uint8_t io_r(offs_t offset);
void io_w(address_space &space, offs_t offset, uint8_t data);
auto iord_cb() { return m_iord.bind(); }
auto iowr_cb() { return m_iowr.bind(); }
template <typename T> void set_cpu_tag(T &&tag) { m_cpu.set_tag(std::forward<T>(tag)); }
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
private:
uint8_t m_line[16]; //!< input/output flip-flops for 16 I/O lines
uint8_t m_bl; //!< value of BL during the most recent output
bool m_enable; //!< true if outputs are enabled
devcb_read8 m_iord; //!< input line (read, offset = line, data = 0/1)
devcb_write8 m_iowr; //!< output line (write, offset = line, data = 0/1)
required_device<pps4_device> m_cpu;
};
DECLARE_DEVICE_TYPE(RA17XX, ra17xx_device)
#endif // MAME_MACHINE_RA17XX_H
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