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// license:BSD-3-Clause
// copyright-holders:Curt Coder, smf
/**********************************************************************
SpeedDOS / Burst Nibbler 1541/1571 Parallel Cable emulation
**********************************************************************/
#ifndef MAME_BUS_C64_BN1541_H
#define MAME_BUS_C64_BN1541_H
#pragma once
#include "user.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> device_c64_floppy_parallel_interface
class device_c64_floppy_parallel_interface
{
public:
// construction/destruction
device_c64_floppy_parallel_interface(const machine_config &mconfig, device_t &device);
virtual ~device_c64_floppy_parallel_interface();
virtual void parallel_data_w(uint8_t data) = 0;
virtual void parallel_strobe_w(int state) = 0;
device_c64_floppy_parallel_interface *m_other;
protected:
uint8_t m_parallel_data;
};
// ======================> c64_bn1541_device
class c64_bn1541_device : public device_t,
public device_pet_user_port_interface,
public device_c64_floppy_parallel_interface
{
public:
// construction/destruction
c64_bn1541_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
protected:
// device-level overrides
virtual void device_start() override;
// device_c64_floppy_parallel_interface overrides
virtual void parallel_data_w(uint8_t data) override;
virtual void parallel_strobe_w(int state) override;
// device_pet_user_port_interface overrides
virtual DECLARE_WRITE_LINE_MEMBER(input_8) override;
virtual WRITE_LINE_MEMBER(input_c) override { if (state) m_parallel_output |= 1; else m_parallel_output &= ~1; update_output(); }
virtual WRITE_LINE_MEMBER(input_d) override { if (state) m_parallel_output |= 2; else m_parallel_output &= ~2; update_output(); }
virtual WRITE_LINE_MEMBER(input_e) override { if (state) m_parallel_output |= 4; else m_parallel_output &= ~4; update_output(); }
virtual WRITE_LINE_MEMBER(input_f) override { if (state) m_parallel_output |= 8; else m_parallel_output &= ~8; update_output(); }
virtual WRITE_LINE_MEMBER(input_h) override { if (state) m_parallel_output |= 16; else m_parallel_output &= ~16; update_output(); }
virtual WRITE_LINE_MEMBER(input_j) override { if (state) m_parallel_output |= 32; else m_parallel_output &= ~32; update_output(); }
virtual WRITE_LINE_MEMBER(input_k) override { if (state) m_parallel_output |= 64; else m_parallel_output &= ~64; update_output(); }
virtual WRITE_LINE_MEMBER(input_l) override { if (state) m_parallel_output |= 128; else m_parallel_output &= ~128; update_output(); }
private:
void update_output();
uint8_t m_parallel_output;
};
// device type definition
DECLARE_DEVICE_TYPE(C64_BN1541, c64_bn1541_device)
#endif // MAME_BUS_C64_BN1541_H
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