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bus/centronics: Added a skeleton Epson RX-80 printer device to allow the CPU ROM to be debugged. (#13391)
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‎scripts/src/bus.lua

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@@ -3304,6 +3304,8 @@ if (BUSES["CENTRONICS"]~=null) then
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MAME_DIR .. "src/devices/bus/centronics/epson_lx800.h",
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MAME_DIR .. "src/devices/bus/centronics/epson_lx810l.cpp",
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MAME_DIR .. "src/devices/bus/centronics/epson_lx810l.h",
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MAME_DIR .. "src/devices/bus/centronics/epson_rx80.cpp",
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MAME_DIR .. "src/devices/bus/centronics/epson_rx80.h",
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MAME_DIR .. "src/devices/bus/centronics/nec_p72.cpp",
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MAME_DIR .. "src/devices/bus/centronics/nec_p72.h",
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MAME_DIR .. "src/devices/bus/centronics/nlq401.cpp",

‎src/devices/bus/centronics/ctronics.cpp

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@@ -122,6 +122,7 @@ device_centronics_peripheral_interface::~device_centronics_peripheral_interface(
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#include "epson_ex800.h"
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#include "epson_lx800.h"
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#include "epson_lx810l.h"
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#include "epson_rx80.h"
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#include "nec_p72.h"
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#include "printer.h"
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#include "digiblst.h"
@@ -139,6 +140,7 @@ void centronics_devices(device_slot_interface &device)
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device.option_add("lx800", EPSON_LX800);
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device.option_add("lx810l", EPSON_LX810L);
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device.option_add("ap2000", EPSON_AP2000);
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device.option_add("rx80", EPSON_RX80);
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device.option_add("p72", NEC_P72);
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device.option_add("printer", CENTRONICS_PRINTER);
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device.option_add("digiblst", CENTRONICS_DIGIBLASTER);

‎src/devices/bus/centronics/epson_rx80.cpp

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// license:BSD-3-Clause
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// copyright-holders:Golden Child
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/***************************************************************************
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Epson RX-80 Dot Matrix printer (skeleton)
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Main CPU is a UPD7810 running at 11 MHz.
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8K of mask ROM (marked EPSON M64200CA)
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uses 256 bytes of ram inside upd7810, no external ram chips
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has a limited line buffer of 137 bytes maximum from ff00 to ff88,
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used for character buffer as well as during graphic print operation.
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137 bytes is approximate maximum line length during condensed print.
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*****************************************************************************/
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#include "emu.h"
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#include "epson_rx80.h"
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#include "cpu/upd7810/upd7810.h"
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namespace {
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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class epson_rx80_device : public device_t, public device_centronics_peripheral_interface
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{
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public:
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// construction/destruction
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epson_rx80_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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static constexpr feature_type unemulated_features() { return feature::PRINTER; }
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/* Centronics stuff */
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virtual void input_init(int state) override;
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virtual void input_strobe(int state) override;
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virtual void input_data0(int state) override { if (state) m_centronics_data |= 0x01; else m_centronics_data &= ~0x01; }
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virtual void input_data1(int state) override { if (state) m_centronics_data |= 0x02; else m_centronics_data &= ~0x02; }
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virtual void input_data2(int state) override { if (state) m_centronics_data |= 0x04; else m_centronics_data &= ~0x04; }
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virtual void input_data3(int state) override { if (state) m_centronics_data |= 0x08; else m_centronics_data &= ~0x08; }
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virtual void input_data4(int state) override { if (state) m_centronics_data |= 0x10; else m_centronics_data &= ~0x10; }
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virtual void input_data5(int state) override { if (state) m_centronics_data |= 0x20; else m_centronics_data &= ~0x20; }
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virtual void input_data6(int state) override { if (state) m_centronics_data |= 0x40; else m_centronics_data &= ~0x40; }
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virtual void input_data7(int state) override { if (state) m_centronics_data |= 0x80; else m_centronics_data &= ~0x80; }
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protected:
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virtual void device_start() override ATTR_COLD;
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virtual void device_reset() override ATTR_COLD;
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virtual const tiny_rom_entry *device_rom_region() const override ATTR_COLD;
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virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
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virtual ioport_constructor device_input_ports() const override ATTR_COLD;
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virtual bool supports_pin35_5v() override { return true; }
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private:
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uint8_t centronics_data_r(offs_t offset) { return m_centronics_data; };
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void epson_rx80_mem(address_map &map) ATTR_COLD;
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required_device<upd7810_device> m_maincpu;
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uint8_t m_centronics_data;
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};
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//-------------------------------------------------
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// ROM( epson_rx80 )
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//-------------------------------------------------
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ROM_START( epson_rx80 )
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ROM_REGION(0x2000, "maincpu", 0) // 8K rom for upd7810
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ROM_LOAD("rx80_2764.bin", 0x0000, 0x2000, CRC(5206104a) SHA1(3e304f5331181aedb321d3db23a9387e3cfacf0c))
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ROM_END
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//-------------------------------------------------
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// rom_region - device-specific ROM region
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//-------------------------------------------------
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const tiny_rom_entry *epson_rx80_device::device_rom_region() const
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{
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return ROM_NAME( epson_rx80 );
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}
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//-------------------------------------------------
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// ADDRESS_MAP( epson_rx80_mem )
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//-------------------------------------------------
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void epson_rx80_device::epson_rx80_mem(address_map &map)
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{
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map(0x0000, 0x1fff).rom().region("maincpu", 0);
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map(0xd800, 0xd800).r(FUNC(epson_rx80_device::centronics_data_r));
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}
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//-------------------------------------------------
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// device_add_mconfig - add device configuration
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//-------------------------------------------------
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void epson_rx80_device::device_add_mconfig(machine_config &config)
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{
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upd7810_device &upd(UPD7810(config, m_maincpu, 11000000)); // 11 Mhz
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upd.set_addrmap(AS_PROGRAM, &epson_rx80_device::epson_rx80_mem);
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}
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//-------------------------------------------------
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// INPUT_PORTS( epson_rx80 )
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//-------------------------------------------------
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INPUT_PORTS_START( epson_rx80 )
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INPUT_PORTS_END
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//-------------------------------------------------
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// input_ports - device-specific input ports
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//-------------------------------------------------
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ioport_constructor epson_rx80_device::device_input_ports() const
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{
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return INPUT_PORTS_NAME( epson_rx80 );
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}
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//-------------------------------------------------
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// epson_rx80_device - constructor
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//-------------------------------------------------
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epson_rx80_device::epson_rx80_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
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device_t(mconfig, EPSON_RX80, tag, owner, clock),
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device_centronics_peripheral_interface(mconfig, *this),
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m_maincpu(*this, "maincpu")
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void epson_rx80_device::device_start()
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{
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void epson_rx80_device::device_reset()
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{
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}
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/***************************************************************************
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Centronics
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***************************************************************************/
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void epson_rx80_device::input_strobe(int state)
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{
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}
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void epson_rx80_device::input_init(int state)
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{
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}
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} // anonymous namespace
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// GLOBAL
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DEFINE_DEVICE_TYPE_PRIVATE(EPSON_RX80, device_centronics_peripheral_interface, epson_rx80_device, "epson_rx80", "Epson RX-80")

‎src/devices/bus/centronics/epson_rx80.h

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// license:BSD-3-Clause
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// copyright-holders:Golden Child
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/**********************************************************************
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Epson RX-80 dot matrix printer emulation (skeleton)
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**********************************************************************/
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#ifndef MAME_BUS_CENTRONICS_EPSON_RX80_H
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#define MAME_BUS_CENTRONICS_EPSON_RX80_H
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#pragma once
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#include "ctronics.h"
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// device type declaration
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DECLARE_DEVICE_TYPE(EPSON_RX80, device_centronics_peripheral_interface)
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#endif // MAME_BUS_CENTRONICS_EPSON_RX80_H

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