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// license:BSD-3-Clause
// copyright-holders:Sergey Svishchev
/***************************************************************************
DEC DL11-type SLU (serial line unit)
***************************************************************************/
#ifndef MAME_MACHINE_DL11_H
#define MAME_MACHINE_DL11_H
#pragma once
#include "machine/pdp11.h"
#include "machine/z80daisy.h"
#include "diserial.h"
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
// ======================> dl11_device
class dl11_device : public device_t,
public device_serial_interface,
public device_z80daisy_interface
{
public:
// construction/destruction
dl11_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock);
void set_rxc(int clock) { m_rxc = clock; }
void set_txc(int clock) { m_txc = clock; }
void set_rxvec(int vec) { m_rxvec = vec; }
void set_txvec(int vec) { m_txvec = vec; }
auto txd_wr_callback() { return m_write_txd.bind(); }
auto txrdy_wr_callback() { return m_write_txrdy.bind(); }
auto rxrdy_wr_callback() { return m_write_rxrdy.bind(); }
uint16_t read(offs_t offset);
void write(offs_t offset, uint16_t data, uint16_t mem_mask = ~0);
DECLARE_READ_LINE_MEMBER( rxrdy_r );
DECLARE_READ_LINE_MEMBER( txrdy_r );
DECLARE_WRITE_LINE_MEMBER( rx_w ) { device_serial_interface::rx_w(state); }
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
// device_serial_interface overrides
virtual void tra_callback() override;
virtual void tra_complete() override;
virtual void rcv_complete() override;
// device_z80daisy_interface overrides
virtual int z80daisy_irq_state() override;
virtual int z80daisy_irq_ack() override;
virtual void z80daisy_irq_reti() override;
private:
/* registers */
static constexpr uint16_t DLRCSR_RD = CSR_DONE | CSR_IE;
static constexpr uint16_t DLRCSR_WR = CSR_IE;
static constexpr uint16_t DLRBUF_ERR = 0100000;
static constexpr uint16_t DLRBUF_OVR = 0040000;
static constexpr uint16_t DLRBUF_RBRK = 0020000;
static constexpr uint16_t DLRBUF_PERR = 0020000;
static constexpr uint16_t DLTCSR_XBRK = 0000001;
static constexpr uint16_t DLTCSR_RD = CSR_DONE | CSR_IE | DLTCSR_XBRK;
static constexpr uint16_t DLTCSR_WR = CSR_IE | DLTCSR_XBRK;
devcb_write_line m_write_txd;
devcb_write_line m_write_rxrdy;
devcb_write_line m_write_txrdy;
line_state m_rxrdy;
line_state m_txrdy;
int m_rxc;
int m_txc;
int m_rxvec;
int m_txvec;
uint16_t m_rcsr;
uint16_t m_rbuf;
uint16_t m_tcsr;
uint16_t m_tbuf;
};
// device type definition
DECLARE_DEVICE_TYPE(DL11, dl11_device)
#endif
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