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Diffstat (limited to 'src/mame/drivers/microkit.cpp')
-rw-r--r--src/mame/drivers/microkit.cpp193
1 files changed, 0 insertions, 193 deletions
diff --git a/src/mame/drivers/microkit.cpp b/src/mame/drivers/microkit.cpp
deleted file mode 100644
index 1861452e5ab..00000000000
--- a/src/mame/drivers/microkit.cpp
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@@ -1,193 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Curt Coder, Robbbert
-/*
-
- RCA COSMAC Microkit
-
- http://www.vintagecomputer.net/browse_thread.cfm?id=511
-
- Press CR or LF to get the * prompt.
- Commands (must be in UPPERcase):
- $Pxxxx - Jump to address xxxx
- ?Mxxxx yyyy - Dump memory starting at xxxx for yyyy bytes
- !Mxxxx yyzz... - Write data (yy etc) to memory xxxx onwards.
-
- There's no sound or storage facilities, therefore no software.
-
- The computer looks like a rack-mount metal box with a rudimentary front panel.
- - Buttons are: Reset; Load; Run program; Run Utility
- - There is a RUN LED.
- - It also has a power switch and lamp, and a fuse.
- - According to the schematic there are LEDs on every data, address and status line.
-
-*****************************************************************************************/
-
-#include "emu.h"
-#include "cpu/cosmac/cosmac.h"
-#include "bus/rs232/rs232.h"
-#include "machine/cdp1852.h"
-
-
-class microkit_state : public driver_device
-{
-public:
- microkit_state(const machine_config &mconfig, device_type type, const char *tag)
- : driver_device(mconfig, type, tag)
- , m_a15(1)
- , m_maincpu(*this, "maincpu")
- , m_rom(*this, "maincpu")
- , m_rs232(*this, "rs232")
- { }
-
- void microkit(machine_config &config);
-
- DECLARE_INPUT_CHANGED_MEMBER(reset_button);
- DECLARE_INPUT_CHANGED_MEMBER(runp_button);
- DECLARE_INPUT_CHANGED_MEMBER(runu_button);
-
-private:
- DECLARE_READ_LINE_MEMBER(clear_r);
- DECLARE_WRITE8_MEMBER(ram_w);
- DECLARE_READ8_MEMBER(ram_r);
-
- void microkit_io(address_map &map);
- void microkit_mem(address_map &map);
-
- virtual void machine_start() override;
- virtual void machine_reset() override;
- std::unique_ptr<uint8_t[]> m_ram;
- uint8_t m_resetcnt;
- bool m_a15;
- required_device<cosmac_device> m_maincpu;
- required_memory_region m_rom;
- required_device<rs232_port_device> m_rs232;
-};
-
-void microkit_state::microkit_mem(address_map &map)
-{
- map(0x0000, 0x01ff).rw(FUNC(microkit_state::ram_r),FUNC(microkit_state::ram_w));
- map(0x0200, 0x0fff).ram();
- map(0x8000, 0x81ff).rom().region("maincpu", 0); // CDP1832.U2
- map(0x8c00, 0x8c1f).ram(); // CDP1824.U3 "Register Storage"
-}
-
-void microkit_state::microkit_io(address_map &map)
-{
- map(0x05, 0x05).r("u4", FUNC(cdp1852_device::read)).w("u4", FUNC(cdp1852_device::write)); // user output port
- map(0x06, 0x06).r("u5", FUNC(cdp1852_device::read)).w("u5", FUNC(cdp1852_device::write)); // user input port
- map(0x07, 0x07).nopw(); // writes lots of zeros here
-}
-
-static INPUT_PORTS_START( microkit )
- PORT_START("RESET")
- PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("RESET") PORT_CODE(KEYCODE_F3) PORT_CHANGED_MEMBER(DEVICE_SELF, microkit_state, reset_button, 0)
- PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("RUN P") PORT_CODE(KEYCODE_F2) PORT_CHANGED_MEMBER(DEVICE_SELF, microkit_state, runp_button, 0)
- PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("RUN U") PORT_CODE(KEYCODE_F1) PORT_CHANGED_MEMBER(DEVICE_SELF, microkit_state, runu_button, 0)
-INPUT_PORTS_END
-
-INPUT_CHANGED_MEMBER(microkit_state::reset_button)
-{
- m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? ASSERT_LINE : CLEAR_LINE);
- m_resetcnt = 0;
-}
-
-INPUT_CHANGED_MEMBER(microkit_state::runp_button)
-{
- m_a15 = 0;
- m_resetcnt = 0;
- m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? ASSERT_LINE : CLEAR_LINE);
-}
-
-INPUT_CHANGED_MEMBER(microkit_state::runu_button)
-{
- m_a15 = 1;
- m_resetcnt = 0;
- m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? ASSERT_LINE : CLEAR_LINE);
-}
-
-READ_LINE_MEMBER( microkit_state::clear_r )
-{
- if (m_resetcnt < 0x20)
- m_resetcnt++;
-
- if (m_resetcnt < 0x10)
- return 0;
- else
- if (m_resetcnt == 0x1c)
- m_a15 = 0;
-
- return 1;
-}
-
-READ8_MEMBER( microkit_state::ram_r )
-{
- if (m_a15)
- return m_rom->base()[offset];
- else
- return m_ram[offset];
-}
-
-WRITE8_MEMBER( microkit_state::ram_w )
-{
- m_ram[offset] = data;
-}
-
-void microkit_state::machine_reset()
-{
- m_resetcnt = 0;
- m_maincpu->reset();
-}
-
-void microkit_state::machine_start()
-{
- // Register save state
- save_item(NAME(m_resetcnt));
- save_item(NAME(m_a15));
- m_ram = make_unique_clear<uint8_t[]>(0x200);
- save_pointer(NAME(m_ram), 0x200);
-}
-
-static DEVICE_INPUT_DEFAULTS_START( serial_keyb )
- DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_300 )
- DEVICE_INPUT_DEFAULTS( "RS232_RXBAUD", 0xff, RS232_BAUD_300 )
- DEVICE_INPUT_DEFAULTS( "RS232_STARTBITS", 0xff, RS232_STARTBITS_1 )
- DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_7 )
- DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_MARK )
- DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_2 )
-DEVICE_INPUT_DEFAULTS_END
-
-
-void microkit_state::microkit(machine_config &config)
-{
- // basic machine hardware
- CDP1802(config, m_maincpu, 2_MHz_XTAL);
- m_maincpu->set_addrmap(AS_PROGRAM, &microkit_state::microkit_mem);
- m_maincpu->set_addrmap(AS_IO, &microkit_state::microkit_io);
- m_maincpu->wait_cb().set_constant(1);
- m_maincpu->clear_cb().set(FUNC(microkit_state::clear_r));
- m_maincpu->q_cb().set(m_rs232, FUNC(rs232_port_device::write_txd)).invert();
-
- /* video hardware */
- RS232_PORT(config, m_rs232, default_rs232_devices, "terminal");
- m_rs232->rxd_handler().set_inputline(m_maincpu, COSMAC_INPUT_LINE_EF4);
- m_rs232->set_option_device_input_defaults("terminal", DEVICE_INPUT_DEFAULTS_NAME(serial_keyb));
-
- cdp1852_device &u4(CDP1852(config, "u4"));
- u4.mode_cb().set_constant(1); // output
-
- cdp1852_device &u5(CDP1852(config, "u5"));
- u5.mode_cb().set_constant(0); // input
-}
-
-ROM_START( microkit )
- ROM_REGION( 0x200, "maincpu", 0 )
- ROM_LOAD( "ut4.u2", 0x0000, 0x0200, CRC(ba642f8e) SHA1(8975a4c6a0bb699b53c753946aac54860054246a) )
-
- // These are bad, with heaps of bugs
- //ROM_REGION( 0x200, "maincpu", ROMREGION_INVERT )
- //ROM_LOAD( "3.2b", 0x000, 0x100, CRC(6799357e) SHA1(c46e3322b8b1b6534a7da04806be29fa265951b7) )
- //ROM_LOAD( "4.2a", 0x100, 0x100, CRC(27267bad) SHA1(838df9be2dc175584a1a6ee1770039118e49482e) )
-
-ROM_END
-
-COMP( 1975, microkit, 0, 0, microkit, microkit, microkit_state, empty_init, "RCA", "COSMAC Microkit", MACHINE_SUPPORTS_SAVE )