diff options
Diffstat (limited to 'src/emu/bus/adam/ide.c')
-rw-r--r-- | src/emu/bus/adam/ide.c | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/src/emu/bus/adam/ide.c b/src/emu/bus/adam/ide.c new file mode 100644 index 00000000000..bc15a7bbc3c --- /dev/null +++ b/src/emu/bus/adam/ide.c @@ -0,0 +1,209 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + Micro Innovations Powermate IDE Hard Disk emulation + + Copyright MESS Team. + Visit http://mamedev.org for licensing and usage restrictions. + +**********************************************************************/ + +/* + + TODO: + + - parallel status port + - memory bank switching port + - boot ROM + +*/ + +#include "ide.h" + + + +//************************************************************************** +// MACROS/CONSTANTS +//************************************************************************** + +#define ATA_TAG "ata" +#define CENTRONICS_TAG "centronics" + + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type ADAM_IDE = &device_creator<powermate_ide_device>; + + +//------------------------------------------------- +// ROM( adam_ata ) +//------------------------------------------------- + +ROM_START( adam_ata ) + ROM_REGION( 0x1000, "rom", 0 ) + ROM_LOAD( "exp.rom", 0x0000, 0x1000, NO_DUMP ) +ROM_END + + +//------------------------------------------------- +// rom_region - device-specific ROM region +//------------------------------------------------- + +const rom_entry *powermate_ide_device::device_rom_region() const +{ + return ROM_NAME( adam_ata ); +} + + +//------------------------------------------------- +// MACHINE_CONFIG_FRAGMENT( adam_ata ) +//------------------------------------------------- +static MACHINE_CONFIG_FRAGMENT( adam_ata ) + MCFG_ATA_INTERFACE_ADD(ATA_TAG, ata_devices, "hdd", NULL, false) + MCFG_CENTRONICS_PRINTER_ADD(CENTRONICS_TAG, standard_centronics) +MACHINE_CONFIG_END + + +//------------------------------------------------- +// machine_config_additions - device-specific +// machine configurations +//------------------------------------------------- + +machine_config_constructor powermate_ide_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( adam_ata ); +} + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// powermate_ide_device - constructor +//------------------------------------------------- + +powermate_ide_device::powermate_ide_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : device_t(mconfig, ADAM_IDE, "Powermate HP IDE", tag, owner, clock, "adam_ide", __FILE__), + device_adam_expansion_slot_card_interface(mconfig, *this), + m_ata(*this, ATA_TAG), + m_centronics(*this, CENTRONICS_TAG) +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void powermate_ide_device::device_start() +{ +} + + +//------------------------------------------------- +// adam_bd_r - buffered data read +//------------------------------------------------- + +UINT8 powermate_ide_device::adam_bd_r(address_space &space, offs_t offset, UINT8 data, int bmreq, int biorq, int aux_rom_cs, int cas1, int cas2) +{ + if (!biorq) + { + switch (offset & 0xff) + { + case 0x01: + case 0x02: + case 0x03: + case 0x04: + case 0x05: + case 0x06: + case 0x07: + data = m_ata->read_cs0(space, offset & 0x07, 0xff); + break; + + case 0x40: // Printer status + /* + + bit description + + 0 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + + */ + break; + + case 0x58: + m_ata_data = m_ata->read_cs0(space, 0, 0xffff); + + data = m_ata_data & 0xff; + break; + + case 0x59: + data = m_ata_data >> 8; + break; + + case 0x5a: + data = m_ata->read_cs1(space, 6, 0xff); + break; + + case 0x5b: // Digital Input Register + data = 0xff; + break; + } + } + + return data; +} + + +//------------------------------------------------- +// adam_bd_w - buffered data write +//------------------------------------------------- + +void powermate_ide_device::adam_bd_w(address_space &space, offs_t offset, UINT8 data, int bmreq, int biorq, int aux_rom_cs, int cas1, int cas2) +{ + if (!biorq) + { + switch (offset & 0xff) + { + case 0x02: + case 0x03: + case 0x04: + case 0x05: + case 0x06: + case 0x07: + m_ata->write_cs0(space, offset & 0x07, data, 0xff); + break; + + case 0x40: + m_centronics->write(space, 0, data); + break; + + case 0x42: // Bank Number + break; + + case 0x58: + m_ata_data |= data; + m_ata->write_cs0(space, 0, m_ata_data, 0xffff); + break; + + case 0x59: + m_ata_data = data << 8; + break; + + case 0x5a: // Fixed Disk Control Register + break; + } + } +} |