mirror of
https://github.com/holub/mame
synced 2025-07-03 00:56:03 +03:00
bus/electron: Added the ElkSD64 and ElkSD128 Electron SD interfaces.
This commit is contained in:
Nigel Barnes
parent
2236ea0ff4
commit
b788307114
@ -1196,6 +1196,10 @@ if (BUSES["ELECTRON"]~=null) then
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files {
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MAME_DIR .. "src/devices/bus/electron/exp.cpp",
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MAME_DIR .. "src/devices/bus/electron/exp.h",
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MAME_DIR .. "src/devices/bus/electron/elksd64.cpp",
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MAME_DIR .. "src/devices/bus/electron/elksd64.h",
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MAME_DIR .. "src/devices/bus/electron/elksd128.cpp",
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MAME_DIR .. "src/devices/bus/electron/elksd128.h",
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MAME_DIR .. "src/devices/bus/electron/fbjoy.cpp",
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MAME_DIR .. "src/devices/bus/electron/fbjoy.h",
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MAME_DIR .. "src/devices/bus/electron/fbprint.cpp",
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318
src/devices/bus/electron/elksd128.cpp
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318
src/devices/bus/electron/elksd128.cpp
Normal file
@ -0,0 +1,318 @@
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// license:BSD-3-Clause
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// copyright-holders:Nigel Barnes
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/**********************************************************************
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ElkSD128 Electron SD Interface
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SD Card Interface, 128K Memory Expansion & Joystick Adapter
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http://ramtop-retro.uk/elksd128.html
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**********************************************************************/
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#include "emu.h"
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#include "elksd128.h"
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//**************************************************************************
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// DEVICE DEFINITIONS
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//**************************************************************************
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DEFINE_DEVICE_TYPE(ELECTRON_ELKSD128, electron_elksd128_device, "electron_elksd128", "ElkSD128 Electron SD Interface")
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static INPUT_PORTS_START( elksd128 )
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PORT_START("JOY")
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PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_8WAY
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PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_8WAY
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PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_8WAY
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PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_8WAY
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PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_NAME("Fire")
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PORT_BIT(0xe0, IP_ACTIVE_LOW, IPT_UNUSED)
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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 electron_elksd128_device::device_input_ports() const
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{
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return INPUT_PORTS_NAME( elksd128 );
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}
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//-------------------------------------------------
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// ROM( elksd128 )
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//-------------------------------------------------
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ROM_START( elksd128 )
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ROM_REGION(0x80000, "flash", 0)
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ROM_LOAD("esd12815.rom", 0x0000, 0x80000, CRC(3ecf23ce) SHA1(d552149fec6a1deec2b75c740092bd311d67046f))
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ROM_END
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//-------------------------------------------------
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// device_add_mconfig - add device configuration
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//-------------------------------------------------
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void electron_elksd128_device::device_add_mconfig(machine_config &config)
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{
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SPI_SDCARD(config, m_sdcard, 0);
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m_sdcard->spi_miso_callback().set([this](int state) { m_in_bit = state; });
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}
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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 *electron_elksd128_device::device_rom_region() const
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{
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return ROM_NAME( elksd128 );
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// electron_elksd128_device - constructor
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//-------------------------------------------------
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electron_elksd128_device::electron_elksd128_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: device_t(mconfig, ELECTRON_ELKSD128, tag, owner, clock)
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, device_electron_expansion_interface(mconfig, *this)
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, m_flash(*this, "flash")
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, m_sdcard(*this, "sdcard")
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, m_joy(*this, "JOY")
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, m_romsel(0)
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, m_adc_channel(0)
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, m_swr_lock(0)
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, m_spi_clock_state(false)
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, m_spi_clock_sysclk(false)
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, m_spi_clock_cycles(0)
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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 electron_elksd128_device::device_start()
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{
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m_ram = make_unique_clear<uint8_t[]>(0x20000);
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m_spi_clock = timer_alloc(FUNC(electron_elksd128_device::spi_clock), this);
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save_item(NAME(m_romsel));
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save_item(NAME(m_adc_channel));
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save_item(NAME(m_swr_lock));
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save_pointer(NAME(m_ram), 0x20000);
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save_item(NAME(m_spi_clock_state));
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save_item(NAME(m_spi_clock_sysclk));
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save_item(NAME(m_spi_clock_cycles));
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save_item(NAME(m_in_bit));
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save_item(NAME(m_in_latch));
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save_item(NAME(m_out_latch));
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}
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//-------------------------------------------------
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// device_reset - device-specific startup
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//-------------------------------------------------
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void electron_elksd128_device::device_reset()
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{
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m_spi_clock->adjust(attotime::never);
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m_spi_clock_cycles = 0;
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m_spi_clock_state = false;
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}
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//-------------------------------------------------
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// expbus_r - expansion data read
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//-------------------------------------------------
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uint8_t electron_elksd128_device::expbus_r(offs_t offset)
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{
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uint8_t data = 0xff;
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switch (offset >> 12)
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{
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case 0x8: case 0x9: case 0xa: case 0xb:
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switch (m_romsel)
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{
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case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
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data = m_ram[(m_romsel) << 14 | (offset & 0x3fff)];
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break;
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case 12:
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data = m_flash->base()[(m_romsel - 10) << 14 | (offset & 0x3fff)];
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break;
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case 14: case 15:
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data = m_flash->base()[(m_romsel - 14) << 14 | (offset & 0x3fff)];
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break;
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}
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break;
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case 0xf:
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switch (offset >> 8)
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{
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case 0xfc:
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switch (offset)
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{
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case 0xfc70: // Plus 1 analogue/digital converter
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switch (m_adc_channel)
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{
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case 0x04:
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if (!BIT(m_joy->read(), 3))
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data = 0x00;
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else if (!BIT(m_joy->read(), 2))
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data = 0xff;
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else
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data = 0x80;
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break;
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case 0x05:
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if (!BIT(m_joy->read(), 1))
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data = 0x00;
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else if (!BIT(m_joy->read(), 0))
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data = 0xff;
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else
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data = 0x80;
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break;
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case 0x06:
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case 0x07:
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data = 0x80;
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break;
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}
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break;
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case 0xfc72: // Plus 1 joystick and ADC status
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data = 0xaf | (m_joy->read() & 0x10);
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break;
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case 0xfc80: // SPI controller data port
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data = m_in_latch;
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break;
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case 0xfc81: // SPI controller status register
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data = m_spi_clock_cycles > 0 ? 0x01 : 0x00;
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break;
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case 0xfc83: // Device ID
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data = 0x80; // ElkSD128 rev 1.0
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break;
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case 0xfcc0: // First Byte interface
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data = m_joy->read() | 0xe0;
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break;
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case 0xfcd0: // Slogger interface
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data = m_joy->read() | 0xe0;
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break;
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}
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break;
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}
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}
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return data;
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}
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//-------------------------------------------------
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// expbus_w - expansion data write
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//-------------------------------------------------
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void electron_elksd128_device::expbus_w(offs_t offset, uint8_t data)
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{
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switch (offset >> 12)
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{
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case 0x8: case 0x9: case 0xa: case 0xb:
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switch (m_romsel)
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{
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case 0: case 1: case 2: case 3: case 4: case 5:
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m_ram[(m_romsel) << 14 | (offset & 0x3fff)] = data;
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break;
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case 6:
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if (!BIT(m_swr_lock, 6) || (offset & 0x3fff) > 0x3600)
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m_ram[(m_romsel) << 14 | (offset & 0x3fff)] = data;
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break;
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case 7:
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if (BIT(m_swr_lock, 7) || (offset & 0x3fff) > 0x3600)
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m_ram[(m_romsel) << 14 | (offset & 0x3fff)] = data;
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break;
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}
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break;
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case 0xf:
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switch (offset >> 8)
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{
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case 0xfc:
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switch (offset)
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{
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case 0xfc70: // Plus 1 analogue/digital converter
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m_adc_channel = data;
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break;
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case 0xfc80: // SPI controller data port
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m_out_latch = data;
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m_spi_clock_cycles = 8;
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if (m_spi_clock_sysclk) // TODO: confirm fast/slow clock dividers
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m_spi_clock->adjust(attotime::from_hz(16_MHz_XTAL / 2), 0, attotime::from_hz(16_MHz_XTAL / 2));
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else
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m_spi_clock->adjust(attotime::from_hz(16_MHz_XTAL / 32), 0, attotime::from_hz(16_MHz_XTAL / 32));
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break;
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case 0xfc81: // SPI controller clock register
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m_spi_clock_sysclk = bool(BIT(data, 0));
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break;
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case 0xfc82: // Sideways RAM lock
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m_swr_lock = data;
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break;
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}
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break;
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case 0xfe:
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if (offset == 0xfe05)
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{
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m_romsel = data & 0x0f;
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}
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break;
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}
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}
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}
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TIMER_CALLBACK_MEMBER(electron_elksd128_device::spi_clock)
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{
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if (m_spi_clock_cycles > 0)
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{
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m_sdcard->spi_ss_w(1);
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if (m_spi_clock_state)
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{
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m_in_latch <<= 1;
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m_in_latch &= ~0x01;
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m_in_latch |= m_in_bit;
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m_sdcard->spi_clock_w(1);
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m_spi_clock_cycles--;
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}
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else
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{
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m_sdcard->spi_mosi_w(BIT(m_out_latch, 7));
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m_sdcard->spi_clock_w(0);
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m_out_latch <<= 1;
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}
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m_spi_clock_state = !m_spi_clock_state;
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}
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else
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{
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m_spi_clock_state = false;
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m_spi_clock->adjust(attotime::never);
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}
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}
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69
src/devices/bus/electron/elksd128.h
Normal file
69
src/devices/bus/electron/elksd128.h
Normal file
@ -0,0 +1,69 @@
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// license:BSD-3-Clause
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// copyright-holders:Nigel Barnes
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/**********************************************************************
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ElkSD128 Electron SD Interface
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**********************************************************************/
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#ifndef MAME_BUS_ELECTRON_ELKSD128_H
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#define MAME_BUS_ELECTRON_ELKSD128_H
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#include "exp.h"
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#include "machine/spi_sdcard.h"
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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class electron_elksd128_device:
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public device_t,
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public device_electron_expansion_interface
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{
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public:
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// construction/destruction
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electron_elksd128_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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protected:
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// device-level overrides
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virtual void device_start() override;
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virtual void device_reset() override;
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// optional information overrides
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virtual void device_add_mconfig(machine_config &config) override;
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virtual ioport_constructor device_input_ports() const override;
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virtual const tiny_rom_entry *device_rom_region() const override;
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virtual uint8_t expbus_r(offs_t offset) override;
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virtual void expbus_w(offs_t offset, uint8_t data) override;
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private:
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required_memory_region m_flash;
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required_device<spi_sdcard_device> m_sdcard;
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required_ioport m_joy;
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uint8_t m_romsel;
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uint8_t m_adc_channel;
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uint8_t m_swr_lock;
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TIMER_CALLBACK_MEMBER(spi_clock);
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emu_timer *m_spi_clock;
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bool m_spi_clock_state;
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bool m_spi_clock_sysclk;
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int m_spi_clock_cycles;
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int m_in_bit;
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uint8_t m_in_latch;
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uint8_t m_out_latch;
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std::unique_ptr<uint8_t[]> m_ram;
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};
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// device type definition
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DECLARE_DEVICE_TYPE(ELECTRON_ELKSD128, electron_elksd128_device)
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#endif /* MAME_BUS_ELECTRON_ELKSD128_H */
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161
src/devices/bus/electron/elksd64.cpp
Normal file
161
src/devices/bus/electron/elksd64.cpp
Normal file
@ -0,0 +1,161 @@
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// license:BSD-3-Clause
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// copyright-holders:Nigel Barnes
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/**********************************************************************
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ElkSD64 Electron SD Interface
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SD Card Interface & 64K RAM Expansion
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http://ramtop-retro.uk/elksd64.html
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**********************************************************************/
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#include "emu.h"
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#include "elksd64.h"
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//**************************************************************************
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// DEVICE DEFINITIONS
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//**************************************************************************
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DEFINE_DEVICE_TYPE(ELECTRON_ELKSD64, electron_elksd64_device, "electron_elksd64", "ElkSD64 Electron SD Interface")
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//-------------------------------------------------
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// ROM( elksd64 )
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//-------------------------------------------------
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ROM_START( elksd64 )
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ROM_REGION(0x20000, "flash", ROMREGION_ERASE00) // SST39SF010
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ROM_LOAD("zemmfs.bin", 0x0000, 0x4000, CRC(c3d38702) SHA1(8a1f0615ff93549815f4c8d21e35fb89535941dc))
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ROM_LOAD("ap6rom.rom", 0x4000, 0x4000, CRC(364591eb) SHA1(316a25aeeda0266dae510eea52324b087875740f))
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ROM_END
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//-------------------------------------------------
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// device_add_mconfig - add device configuration
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//-------------------------------------------------
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void electron_elksd64_device::device_add_mconfig(machine_config &config)
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{
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SPI_SDCARD(config, m_sdcard, 0);
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m_sdcard->spi_miso_callback().set([this](int state) { m_status = state << 7; });
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}
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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 *electron_elksd64_device::device_rom_region() const
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{
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return ROM_NAME( elksd64 );
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// electron_elksd64_device - constructor
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//-------------------------------------------------
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electron_elksd64_device::electron_elksd64_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: device_t(mconfig, ELECTRON_ELKSD64, tag, owner, clock)
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, device_electron_expansion_interface(mconfig, *this)
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, m_flash(*this, "flash")
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, m_sdcard(*this, "sdcard")
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, m_romsel(0)
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, m_status(0)
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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 electron_elksd64_device::device_start()
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{
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m_ram = make_unique_clear<uint8_t[]>(0x8000);
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save_item(NAME(m_romsel));
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save_item(NAME(m_status));
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save_pointer(NAME(m_ram), 0x8000);
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}
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//-------------------------------------------------
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// expbus_r - expansion data read
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//-------------------------------------------------
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uint8_t electron_elksd64_device::expbus_r(offs_t offset)
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||||
{
|
||||
uint8_t data = 0xff;
|
||||
|
||||
switch (offset >> 12)
|
||||
{
|
||||
case 0x8: case 0x9: case 0xa: case 0xb:
|
||||
switch (m_romsel)
|
||||
{
|
||||
case 12: case 13:
|
||||
data = m_ram[(m_romsel - 12) << 14 | (offset & 0x3fff)];
|
||||
break;
|
||||
|
||||
case 14: case 15:
|
||||
data = m_flash->base()[(m_romsel - 14) << 14 | (offset & 0x3fff)];
|
||||
break;
|
||||
}
|
||||
break;
|
||||
|
||||
case 0xf:
|
||||
switch (offset >> 8)
|
||||
{
|
||||
case 0xfc:
|
||||
if (offset == 0xfc72)
|
||||
{
|
||||
data = m_status;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return data;
|
||||
}
|
||||
|
||||
|
||||
//-------------------------------------------------
|
||||
// expbus_w - expansion data write
|
||||
//-------------------------------------------------
|
||||
|
||||
void electron_elksd64_device::expbus_w(offs_t offset, uint8_t data)
|
||||
{
|
||||
switch (offset >> 12)
|
||||
{
|
||||
case 0x8: case 0x9: case 0xa: case 0xb:
|
||||
switch (m_romsel)
|
||||
{
|
||||
case 12: case 13:
|
||||
m_ram[(m_romsel - 12) << 14 | (offset & 0x3fff)] = data;
|
||||
break;
|
||||
}
|
||||
break;
|
||||
|
||||
case 0xf:
|
||||
switch (offset >> 8)
|
||||
{
|
||||
case 0xfc:
|
||||
if (offset == 0xfc71)
|
||||
{
|
||||
m_sdcard->spi_ss_w(1);
|
||||
m_sdcard->spi_mosi_w(BIT(data, 0));
|
||||
m_sdcard->spi_clock_w(BIT(data, 1));
|
||||
}
|
||||
break;
|
||||
|
||||
case 0xfe:
|
||||
if (offset == 0xfe05)
|
||||
{
|
||||
m_romsel = data & 0x0f;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
55
src/devices/bus/electron/elksd64.h
Normal file
55
src/devices/bus/electron/elksd64.h
Normal file
@ -0,0 +1,55 @@
|
||||
// license:BSD-3-Clause
|
||||
// copyright-holders:Nigel Barnes
|
||||
/**********************************************************************
|
||||
|
||||
ElkSD64 Electron SD Interface
|
||||
|
||||
**********************************************************************/
|
||||
|
||||
|
||||
#ifndef MAME_BUS_ELECTRON_ELKSD64_H
|
||||
#define MAME_BUS_ELECTRON_ELKSD64_H
|
||||
|
||||
#include "exp.h"
|
||||
#include "machine/spi_sdcard.h"
|
||||
|
||||
|
||||
//**************************************************************************
|
||||
// TYPE DEFINITIONS
|
||||
//**************************************************************************
|
||||
|
||||
class electron_elksd64_device:
|
||||
public device_t,
|
||||
public device_electron_expansion_interface
|
||||
{
|
||||
public:
|
||||
// construction/destruction
|
||||
electron_elksd64_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
|
||||
|
||||
protected:
|
||||
// device-level overrides
|
||||
virtual void device_start() override;
|
||||
|
||||
// optional information overrides
|
||||
virtual void device_add_mconfig(machine_config &config) override;
|
||||
virtual const tiny_rom_entry *device_rom_region() const override;
|
||||
|
||||
virtual uint8_t expbus_r(offs_t offset) override;
|
||||
virtual void expbus_w(offs_t offset, uint8_t data) override;
|
||||
|
||||
private:
|
||||
required_memory_region m_flash;
|
||||
required_device<spi_sdcard_device> m_sdcard;
|
||||
|
||||
uint8_t m_romsel;
|
||||
uint8_t m_status;
|
||||
|
||||
std::unique_ptr<uint8_t[]> m_ram;
|
||||
};
|
||||
|
||||
|
||||
// device type definition
|
||||
DECLARE_DEVICE_TYPE(ELECTRON_ELKSD64, electron_elksd64_device)
|
||||
|
||||
|
||||
#endif /* MAME_BUS_ELECTRON_ELKSD64_H */
|
||||
@ -99,6 +99,8 @@ void electron_expansion_slot_device::expbus_w(offs_t offset, uint8_t data)
|
||||
|
||||
|
||||
// slot devices
|
||||
#include "elksd64.h"
|
||||
#include "elksd128.h"
|
||||
#include "fbjoy.h"
|
||||
#include "fbprint.h"
|
||||
#include "mc68k.h"
|
||||
@ -119,6 +121,8 @@ void electron_expansion_devices(device_slot_interface &device)
|
||||
{
|
||||
device.option_add("ap1", ELECTRON_AP1);
|
||||
device.option_add("ap6", ELECTRON_AP6);
|
||||
device.option_add("elksd64", ELECTRON_ELKSD64);
|
||||
device.option_add("elksd128", ELECTRON_ELKSD128);
|
||||
device.option_add("fbjoy", ELECTRON_FBJOY);
|
||||
device.option_add("fbprint", ELECTRON_FBPRINT);
|
||||
device.option_add("mc68k", ELECTRON_MC68K);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user