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https://github.com/holub/mame
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bbcb: Added Computer Village 1797 FDC (LVL Dos), not working.
This commit is contained in:
Nigel Barnes
parent
e0321d67e6
commit
780340b355
@ -232,6 +232,8 @@ if (BUSES["BBC_FDC"]~=null) then
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MAME_DIR .. "src/devices/bus/bbc/fdc/acorn.h",
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MAME_DIR .. "src/devices/bus/bbc/fdc/cumana.cpp",
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MAME_DIR .. "src/devices/bus/bbc/fdc/cumana.h",
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MAME_DIR .. "src/devices/bus/bbc/fdc/cv1797.cpp",
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MAME_DIR .. "src/devices/bus/bbc/fdc/cv1797.h",
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MAME_DIR .. "src/devices/bus/bbc/fdc/opus.cpp",
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MAME_DIR .. "src/devices/bus/bbc/fdc/opus.h",
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MAME_DIR .. "src/devices/bus/bbc/fdc/watford.cpp",
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160
src/devices/bus/bbc/fdc/cv1797.cpp
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160
src/devices/bus/bbc/fdc/cv1797.cpp
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@ -0,0 +1,160 @@
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// license:BSD-3-Clause
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// copyright-holders:Nigel Barnes
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/**********************************************************************
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Computer Village 1797 FDC
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http://chrisacorns.computinghistory.org.uk/8bit_Upgrades/ComputerVillage_FDC.html
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**********************************************************************/
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#include "emu.h"
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#include "cv1797.h"
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//**************************************************************************
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// DEVICE DEFINITIONS
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//**************************************************************************
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DEFINE_DEVICE_TYPE(BBC_CV1797, bbc_cv1797_device, "bbc_cv1797", "Computer Village 1797 FDC")
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//-------------------------------------------------
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// MACHINE_DRIVER( cv1797 )
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//-------------------------------------------------
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FLOPPY_FORMATS_MEMBER( bbc_cv1797_device::floppy_formats )
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FLOPPY_ACORN_SSD_FORMAT,
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FLOPPY_ACORN_DSD_FORMAT,
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FLOPPY_FSD_FORMAT
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FLOPPY_FORMATS_END0
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static SLOT_INTERFACE_START( bbc_floppies_525 )
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SLOT_INTERFACE("525sssd", FLOPPY_525_SSSD)
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SLOT_INTERFACE("525sd", FLOPPY_525_SD)
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SLOT_INTERFACE("525ssdd", FLOPPY_525_SSDD)
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SLOT_INTERFACE("525dd", FLOPPY_525_DD)
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SLOT_INTERFACE("525qd", FLOPPY_525_QD)
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SLOT_INTERFACE_END
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ROM_START( cv1797 )
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ROM_REGION(0x4000, "dfs_rom", 0)
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ROM_DEFAULT_BIOS("lvldos")
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ROM_SYSTEM_BIOS(0, "lvldos", "LVL Dos 0.91")
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ROMX_LOAD("lvldos91.rom", 0x0000, 0x2000, CRC(69d7653a) SHA1(9cd39d011290b97d5ba05b6c745689a8553be5fc), ROM_BIOS(1))
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ROM_RELOAD(0x2000, 0x2000)
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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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MACHINE_CONFIG_MEMBER( bbc_cv1797_device::device_add_mconfig )
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MCFG_FD1797_ADD("fd1797", XTAL_8MHz / 8)
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MCFG_WD_FDC_INTRQ_CALLBACK(WRITELINE(bbc_cv1797_device, fdc_intrq_w))
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MCFG_WD_FDC_DRQ_CALLBACK(WRITELINE(bbc_cv1797_device, fdc_drq_w))
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MCFG_WD_FDC_HLD_CALLBACK(WRITELINE(bbc_cv1797_device, motor_w))
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MCFG_FLOPPY_DRIVE_ADD("fd1797:0", bbc_floppies_525, "525qd", floppy_formats)
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MCFG_FLOPPY_DRIVE_SOUND(true)
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MCFG_FLOPPY_DRIVE_ADD("fd1797:1", bbc_floppies_525, "525qd", floppy_formats)
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MCFG_FLOPPY_DRIVE_SOUND(true)
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MACHINE_CONFIG_END
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const tiny_rom_entry *bbc_cv1797_device::device_rom_region() const
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{
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return ROM_NAME( cv1797 );
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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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// bbc_cv1797_device - constructor
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//-------------------------------------------------
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bbc_cv1797_device::bbc_cv1797_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: device_t(mconfig, BBC_CV1797, tag, owner, clock),
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device_bbc_fdc_interface(mconfig, *this),
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m_dfs_rom(*this, "dfs_rom"),
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m_fdc(*this, "fd1797"),
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m_floppy0(*this, "fd1797:0"),
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m_floppy1(*this, "fd1797:1")
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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 bbc_cv1797_device::device_start()
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{
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device_t* cpu = machine().device("maincpu");
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address_space& space = cpu->memory().space(AS_PROGRAM);
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m_slot = dynamic_cast<bbc_fdc_slot_device *>(owner());
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space.install_readwrite_handler(0xfe80, 0xfe80, read8_delegate(FUNC(fd1797_device::read), (fd1797_device *)m_fdc), write8_delegate(FUNC(fd1797_device::write), (fd1797_device *)m_fdc));
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space.install_readwrite_handler(0xfe84, 0xfe9f, read8_delegate(FUNC(bbc_cv1797_device::fd1797l_read), this), write8_delegate(FUNC(bbc_cv1797_device::fd1797l_write), this));
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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 bbc_cv1797_device::device_reset()
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{
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machine().root_device().membank("bank4")->configure_entry(12, memregion("dfs_rom")->base());
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m_fdc->soft_reset();
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}
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//**************************************************************************
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// IMPLEMENTATION
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//**************************************************************************
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READ8_MEMBER(bbc_cv1797_device::fd1797l_read)
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{
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return m_drive_control;
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}
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WRITE8_MEMBER(bbc_cv1797_device::fd1797l_write)
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{
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floppy_image_device *floppy = nullptr;
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m_drive_control = data;
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logerror("fdc: Drive control %02x\n", data);
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// bit 0: drive select
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floppy_image_device *floppy0 = m_floppy0->get_device();
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floppy_image_device *floppy1 = m_floppy1->get_device();
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floppy = (BIT(data, 0) ? floppy1 : floppy0);
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m_fdc->set_floppy(floppy);
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// bit 1: side select
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if (floppy)
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floppy->ss_w(BIT(data, 1));
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// bit 2: density
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m_fdc->dden_w(BIT(data, 2));
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// bit 6: reset
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//if (BIT(data, 6)) m_fdc->soft_reset();
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}
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WRITE_LINE_MEMBER(bbc_cv1797_device::fdc_intrq_w)
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{
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m_slot->intrq_w(state);
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}
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WRITE_LINE_MEMBER(bbc_cv1797_device::fdc_drq_w)
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{
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m_slot->drq_w(state);
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}
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WRITE_LINE_MEMBER(bbc_cv1797_device::motor_w)
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{
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if (m_floppy0->get_device()) m_floppy0->get_device()->mon_w(!state);
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if (m_floppy1->get_device()) m_floppy1->get_device()->mon_w(!state);
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}
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66
src/devices/bus/bbc/fdc/cv1797.h
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66
src/devices/bus/bbc/fdc/cv1797.h
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@ -0,0 +1,66 @@
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// license:BSD-3-Clause
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// copyright-holders:Nigel Barnes
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/**********************************************************************
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Computer Village 1797 FDC
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**********************************************************************/
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#ifndef MAME_BUS_BBC_FDC_CV1797_H
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#define MAME_BUS_BBC_FDC_CV1797_H
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#pragma once
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#include "fdc.h"
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#include "machine/wd_fdc.h"
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#include "formats/acorn_dsk.h"
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#include "formats/fsd_dsk.h"
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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class bbc_cv1797_device :
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public device_t,
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public device_bbc_fdc_interface
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{
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public:
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static constexpr feature_type imperfect_features() { return feature::DISK; }
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// construction/destruction
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bbc_cv1797_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 const tiny_rom_entry *device_rom_region() const override;
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private:
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DECLARE_FLOPPY_FORMATS(floppy_formats);
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DECLARE_READ8_MEMBER(fd1797l_read);
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DECLARE_WRITE8_MEMBER(fd1797l_write);
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DECLARE_WRITE_LINE_MEMBER(fdc_intrq_w);
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DECLARE_WRITE_LINE_MEMBER(fdc_drq_w);
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DECLARE_WRITE_LINE_MEMBER(motor_w);
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required_memory_region m_dfs_rom;
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required_device<fd1797_device> m_fdc;
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required_device<floppy_connector> m_floppy0;
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optional_device<floppy_connector> m_floppy1;
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int m_drive_control;
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};
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// device type definition
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DECLARE_DEVICE_TYPE(BBC_CV1797, bbc_cv1797_device)
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#endif /* MAME_BUS_BBC_FDC_CV1797_H */
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@ -102,7 +102,7 @@ void bbc_fdc_slot_device::device_reset()
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// slot devices
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#include "acorn.h"
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#include "cumana.h"
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//#include "cv1797.h"
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#include "cv1797.h"
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//#include "microware.h"
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#include "opus.h"
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//#include "solidisk.h"
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@ -115,7 +115,7 @@ SLOT_INTERFACE_START( bbc_fdc_devices )
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SLOT_INTERFACE("acorn1770", BBC_ACORN1770)
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SLOT_INTERFACE("cumana1", BBC_CUMANA1)
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SLOT_INTERFACE("cumana2", BBC_CUMANA2)
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//SLOT_INTERFACE("cv1797", BBC_CV1797)
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SLOT_INTERFACE("cv1797", BBC_CV1797)
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//SLOT_INTERFACE("microware", BBC_MICROWARE)
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SLOT_INTERFACE("opus8272", BBC_OPUS8272)
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SLOT_INTERFACE("opus2791", BBC_OPUS2791)
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