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-rw-r--r--src/devices/machine/dl11.h138
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diff --git a/src/devices/machine/dl11.h b/src/devices/machine/dl11.h
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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, uint32_t 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);
+
+ int rxrdy_r();
+ int txrdy_r();
+
+ void rx_w(int state);
+
+ // device_z80daisy_interface overrides
+ virtual int z80daisy_irq_state() override;
+ virtual int z80daisy_irq_ack() override;
+ virtual void z80daisy_irq_reti() override;
+
+protected:
+ dl11_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
+
+ // device-level overrides
+ virtual void device_start() override ATTR_COLD;
+ virtual void device_reset() override ATTR_COLD;
+
+ // device_serial_interface overrides
+ virtual void tra_callback() override;
+ virtual void tra_complete() override;
+ virtual void rcv_complete() override;
+
+ /* registers */
+
+ static constexpr uint16_t DLRCSR_ACT = 0004000;
+ static constexpr uint16_t DLRCSR_RDRENB = 0000001;
+ static constexpr uint16_t DLRCSR_RD = CSR_DONE | CSR_IE | DLRCSR_ACT;
+ 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 = 0010000;
+
+ static constexpr uint16_t DLTCSR_MAINT = 0000004;
+ static constexpr uint16_t DLTCSR_XBRK = 0000001;
+ static constexpr uint16_t DLTCSR_RD = CSR_DONE | CSR_IE | DLTCSR_MAINT | DLTCSR_XBRK;
+ static constexpr uint16_t DLTCSR_WR = CSR_IE | DLTCSR_MAINT | DLTCSR_XBRK;
+
+ bool m_installed;
+
+ 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;
+};
+
+class k1801vp065_device : public dl11_device
+{
+public:
+ // construction/destruction
+ k1801vp065_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+ uint16_t read(offs_t offset);
+ void write(offs_t offset, uint16_t data);
+
+ auto rts_wr_callback() { return m_write_rts.bind(); }
+
+protected:
+ // device-level overrides
+ virtual void device_reset() override;
+
+ // device_serial_interface overrides
+ virtual void rcv_complete() override;
+
+private:
+ static constexpr uint16_t DLRCSR_PERR = 0100000;
+ static constexpr uint16_t DLRCSR_OVR = 0010000;
+ static constexpr uint16_t DLRCSR_RBRK = 0000001;
+ static constexpr uint16_t DLRCSR_RD = CSR_DONE | CSR_IE | DLRCSR_PERR | DLRCSR_OVR | DLRCSR_RBRK;
+ static constexpr uint16_t DLRCSR_WR = CSR_IE;
+
+ devcb_write_line m_write_rts;
+};
+
+
+// device type definition
+DECLARE_DEVICE_TYPE(DL11, dl11_device)
+DECLARE_DEVICE_TYPE(K1801VP065, k1801vp065_device)
+
+#endif