diff options
Diffstat (limited to 'src/devices/bus/x68k/x68k_scsiext.c')
-rw-r--r-- | src/devices/bus/x68k/x68k_scsiext.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/devices/bus/x68k/x68k_scsiext.c b/src/devices/bus/x68k/x68k_scsiext.c new file mode 100644 index 00000000000..b3490cda74d --- /dev/null +++ b/src/devices/bus/x68k/x68k_scsiext.c @@ -0,0 +1,101 @@ +// license:BSD-3-Clause +// copyright-holders:Barry Rodewald +/* + * x68k_scsiext.c + * + * Sharp CZ-6BS1 SCSI-1 controller + * + * Created on: 5/06/2012 + */ + +#include "emu.h" +#include "bus/scsi/scsi.h" +#include "bus/scsi/scsihd.h" +#include "machine/mb89352.h" +#include "x68k_scsiext.h" + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type X68K_SCSIEXT = &device_creator<x68k_scsiext_device>; + +//------------------------------------------------- +// rom_region - device-specific ROM region +//------------------------------------------------- + +ROM_START( x68k_cz6bs1 ) + ROM_REGION( 0x10000, "scsiexrom", 0 ) + ROM_LOAD16_WORD_SWAP( "scsiexrom.bin", 0x0000, 0x2000, CRC(7be488de) SHA1(49616c09a8986ffe6a12ad600febe512f7ba8ae4) ) +ROM_END + +const rom_entry *x68k_scsiext_device::device_rom_region() const +{ + return ROM_NAME( x68k_cz6bs1 ); +} + +// device machine config +static MACHINE_CONFIG_FRAGMENT( x68k_scsiext ) + MCFG_DEVICE_ADD("scsi", SCSI_PORT, 0) + MCFG_SCSIDEV_ADD("scsi:" SCSI_PORT_DEVICE1, "harddisk", SCSIHD, SCSI_ID_0) + MCFG_SCSIDEV_ADD("scsi:" SCSI_PORT_DEVICE2, "harddisk", SCSIHD, SCSI_ID_1) + MCFG_SCSIDEV_ADD("scsi:" SCSI_PORT_DEVICE3, "harddisk", SCSIHD, SCSI_ID_2) + MCFG_SCSIDEV_ADD("scsi:" SCSI_PORT_DEVICE4, "harddisk", SCSIHD, SCSI_ID_3) + MCFG_SCSIDEV_ADD("scsi:" SCSI_PORT_DEVICE5, "harddisk", SCSIHD, SCSI_ID_4) + MCFG_SCSIDEV_ADD("scsi:" SCSI_PORT_DEVICE6, "harddisk", SCSIHD, SCSI_ID_5) + MCFG_SCSIDEV_ADD("scsi:" SCSI_PORT_DEVICE7, "harddisk", SCSIHD, SCSI_ID_6) + + MCFG_DEVICE_ADD("mb89352", MB89352A, 0) + MCFG_LEGACY_SCSI_PORT("scsi") + MCFG_MB89352A_IRQ_CB(WRITELINE(x68k_scsiext_device, irq_w)) + MCFG_MB89352A_DRQ_CB(WRITELINE(x68k_scsiext_device, drq_w)) +MACHINE_CONFIG_END + +machine_config_constructor x68k_scsiext_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( x68k_scsiext ); +} + +x68k_scsiext_device::x68k_scsiext_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : device_t(mconfig, X68K_SCSIEXT, "Sharp CZ-6BS1 SCSI-1", tag, owner, clock, "x68k_cz6bs1", __FILE__), + device_x68k_expansion_card_interface(mconfig, *this), + m_spc(*this, "mb89352") +{ +} + +void x68k_scsiext_device::device_start() +{ + device_t* cpu = machine().device("maincpu"); + UINT8* ROM; + address_space& space = cpu->memory().space(AS_PROGRAM); + m_slot = dynamic_cast<x68k_expansion_slot_device *>(owner()); + space.install_read_bank(0xea0020,0xea1fff,0,0,"scsi_ext"); + space.unmap_write(0xea0020,0xea1fff,0,0); + ROM = machine().root_device().memregion(subtag("scsiexrom").c_str())->base(); + machine().root_device().membank("scsi_ext")->set_base(ROM); + space.install_readwrite_handler(0xea0000,0xea001f,0,0,read8_delegate(FUNC(x68k_scsiext_device::register_r),this),write8_delegate(FUNC(x68k_scsiext_device::register_w),this),0x00ff00ff); +} + +void x68k_scsiext_device::device_reset() +{ +} + +void x68k_scsiext_device::irq_w(int state) +{ + m_slot->irq2_w(state); // correct? Or perhaps selectable? +} + +void x68k_scsiext_device::drq_w(int state) +{ + // TODO +} + +READ8_MEMBER(x68k_scsiext_device::register_r) +{ + return m_spc->mb89352_r(space,offset); +} + +WRITE8_MEMBER(x68k_scsiext_device::register_w) +{ + m_spc->mb89352_w(space,offset,data); +} |