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|
// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
CMD FD-2000/FD-4000 disk drive emulation
**********************************************************************/
/*
TODO:
- IEC
- VIA
- DP8473/PC8477A command extensions to upd765
- D1M/D2M/D4M image format (http://ist.uwaterloo.ca/~schepers/formats/D2M-DNP.TXT)
*/
#include "emu.h"
#include "fd2000.h"
//**************************************************************************
// MACROS / CONSTANTS
//**************************************************************************
#define G65SC02PI2_TAG "m6502"
#define R65C02P4_TAG "m6502"
#define G65SC22P2_TAG "m6522"
#define DP8473V_TAG "dp8473"
#define PC8477AV1_TAG "pc8477av1"
#define DS1216E_TAG "ds1216e"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(FD2000, fd2000_device, "fd2000", "FD-2000")
DEFINE_DEVICE_TYPE(FD4000, fd4000_device, "fd4000", "FD-4000")
//-------------------------------------------------
// ROM( fd2000 )
//-------------------------------------------------
ROM_START( fd2000 )
ROM_REGION( 0x8000, G65SC02PI2_TAG, 0 )
ROM_DEFAULT_BIOS( "v140" )
ROM_SYSTEM_BIOS( 0, "v134", "Version 1.34" )
ROMX_LOAD( "cmd fd-2000 dos v1.34 fd-350026.bin", 0x0000, 0x8000, CRC(859a5edc) SHA1(487fa82a7977e5208d5088f3580f34e8c89560d1), ROM_BIOS(1) )
ROM_SYSTEM_BIOS( 1, "v140", "Version 1.40" )
ROMX_LOAD( "cmd fd-2000 dos v1.40 cs 33cc6f.bin", 0x0000, 0x8000, CRC(4e6ca15c) SHA1(0c61ba58269baf2b8aadf3bbc4648c7a5a6d2128), ROM_BIOS(2) )
ROM_END
//-------------------------------------------------
// ROM( fd4000 )
//-------------------------------------------------
ROM_START( fd4000 )
ROM_REGION( 0x8000, R65C02P4_TAG, 0 )
ROM_DEFAULT_BIOS( "v140" )
ROM_SYSTEM_BIOS( 0, "v134", "Version 1.34" )
ROMX_LOAD( "cmd fd-4000 dos v1.34 fd-350022.bin", 0x0000, 0x8000, CRC(1f4820c1) SHA1(7a2966662e7840fd9377549727ccba62e4349c6f), ROM_BIOS(1) )
ROM_SYSTEM_BIOS( 1, "v140", "Version 1.40" )
ROMX_LOAD( "cmd fd-4000 dos v1.40 fd-350022.bin", 0x0000, 0x8000, CRC(b563ef10) SHA1(d936d76fd8b50ce4c65f885703653d7c1bd7d3c9), ROM_BIOS(2) )
ROM_END
//-------------------------------------------------
// rom_region - device-specific ROM region
//-------------------------------------------------
const tiny_rom_entry *fd2000_device::device_rom_region() const
{
switch (m_variant)
{
default:
return ROM_NAME( fd2000 );
case TYPE_FD4000:
return ROM_NAME( fd4000 );
}
}
//-------------------------------------------------
// ADDRESS_MAP( fd2000_mem )
//-------------------------------------------------
static ADDRESS_MAP_START( fd2000_mem, AS_PROGRAM, 8, fd2000_device )
AM_RANGE(0x0000, 0x3fff) AM_RAM
AM_RANGE(0x4000, 0x400f) AM_MIRROR(0xbf0) AM_DEVREADWRITE(G65SC22P2_TAG, via6522_device, read, write)
AM_RANGE(0x4e00, 0x4e07) AM_MIRROR(0x1f8) AM_DEVICE(DP8473V_TAG, dp8473_device, map)
AM_RANGE(0x5000, 0x7fff) AM_RAM
AM_RANGE(0x8000, 0xffff) AM_ROM AM_REGION(G65SC02PI2_TAG, 0)
ADDRESS_MAP_END
//-------------------------------------------------
// ADDRESS_MAP( fd4000_mem )
//-------------------------------------------------
static ADDRESS_MAP_START( fd4000_mem, AS_PROGRAM, 8, fd4000_device )
AM_RANGE(0x0000, 0x3fff) AM_RAM
AM_RANGE(0x4000, 0x400f) AM_MIRROR(0xbf0) AM_DEVREADWRITE(G65SC22P2_TAG, via6522_device, read, write)
AM_RANGE(0x4e00, 0x4e07) AM_MIRROR(0x1f8) AM_DEVICE(PC8477AV1_TAG, pc8477a_device, map)
AM_RANGE(0x5000, 0x7fff) AM_RAM
AM_RANGE(0x8000, 0xffff) AM_ROM AM_REGION(R65C02P4_TAG, 0)
ADDRESS_MAP_END
READ8_MEMBER( fd2000_device::via_pa_r )
{
/*
bit description
0
1
2
3
4
5
6
7
*/
return 0;
}
WRITE8_MEMBER( fd2000_device::via_pa_w )
{
/*
bit description
0
1
2
3
4
5 FAST DIR
6
7
*/
}
READ8_MEMBER( fd2000_device::via_pb_r )
{
/*
bit description
0
1
2
3
4
5
6
7 FDC INTRQ
*/
uint8_t data = 0;
// FDC interrupt
data |= m_fdc->get_irq() << 7;
return data;
}
WRITE8_MEMBER( fd2000_device::via_pb_w )
{
/*
bit description
0
1
2
3
4
5 LED
6 LED
7
*/
}
static SLOT_INTERFACE_START( fd2000_floppies )
SLOT_INTERFACE( "35hd", FLOPPY_35_HD ) // TEAC FD-235HF
SLOT_INTERFACE_END
static SLOT_INTERFACE_START( fd4000_floppies )
SLOT_INTERFACE( "35ed", FLOPPY_35_ED ) // TEAC FD-235J
SLOT_INTERFACE_END
/*
FLOPPY_FORMATS_MEMBER( fd2000_device::floppy_formats )
FLOPPY_D81_FORMAT
FLOPPY_D2M_FORMAT
FLOPPY_FORMATS_END
*/
//-------------------------------------------------
// MACHINE_DRIVER( fd2000 )
//-------------------------------------------------
static MACHINE_CONFIG_FRAGMENT( fd2000 )
MCFG_CPU_ADD(G65SC02PI2_TAG, M65C02, XTAL_24MHz/12)
MCFG_CPU_PROGRAM_MAP(fd2000_mem)
MCFG_DEVICE_ADD(G65SC22P2_TAG, VIA6522, XTAL_24MHz/12)
MCFG_VIA6522_READPA_HANDLER(READ8(fd2000_device, via_pa_r))
MCFG_VIA6522_READPB_HANDLER(READ8(fd2000_device, via_pb_r))
MCFG_VIA6522_WRITEPA_HANDLER(WRITE8(fd2000_device, via_pa_w))
MCFG_VIA6522_WRITEPB_HANDLER(WRITE8(fd2000_device, via_pb_w))
MCFG_DP8473_ADD(DP8473V_TAG)
MCFG_FLOPPY_DRIVE_ADD(DP8473V_TAG":0", fd2000_floppies, "35hd", floppy_image_device::default_floppy_formats)//fd2000_device::floppy_formats)
MACHINE_CONFIG_END
//-------------------------------------------------
// MACHINE_DRIVER( fd4000 )
//-------------------------------------------------
static MACHINE_CONFIG_FRAGMENT( fd4000 )
MCFG_CPU_ADD(R65C02P4_TAG, M65C02, XTAL_24MHz/6)
MCFG_CPU_PROGRAM_MAP(fd4000_mem)
MCFG_DEVICE_ADD(G65SC22P2_TAG, VIA6522, XTAL_24MHz/12)
MCFG_VIA6522_READPA_HANDLER(READ8(fd2000_device, via_pa_r))
MCFG_VIA6522_READPB_HANDLER(READ8(fd2000_device, via_pb_r))
MCFG_VIA6522_WRITEPA_HANDLER(WRITE8(fd2000_device, via_pa_w))
MCFG_VIA6522_WRITEPB_HANDLER(WRITE8(fd2000_device, via_pb_w))
MCFG_PC8477A_ADD(PC8477AV1_TAG)
MCFG_FLOPPY_DRIVE_ADD(PC8477AV1_TAG":0", fd4000_floppies, "35ed", floppy_image_device::default_floppy_formats)//fd2000_device::floppy_formats)
MACHINE_CONFIG_END
//-------------------------------------------------
// machine_config_additions - device-specific
// machine configurations
//-------------------------------------------------
machine_config_constructor fd2000_device::device_mconfig_additions() const
{
switch (m_variant)
{
default:
return MACHINE_CONFIG_NAME( fd2000 );
case TYPE_FD4000:
return MACHINE_CONFIG_NAME( fd4000 );
}
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// fd2000_device - constructor
//-------------------------------------------------
fd2000_device::fd2000_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: fd2000_device(mconfig, FD2000, tag, owner, clock, TYPE_FD2000)
{
}
fd2000_device::fd2000_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock, uint32_t variant)
: device_t(mconfig, type, tag, owner, clock)
, device_cbm_iec_interface(mconfig, *this)
, m_maincpu(*this, R65C02P4_TAG)
, m_fdc(*this, PC8477AV1_TAG)
, m_floppy0(*this, PC8477AV1_TAG":0")
, m_variant(variant)
{
}
//-------------------------------------------------
// fd4000_device - constructor
//-------------------------------------------------
fd4000_device::fd4000_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: fd2000_device(mconfig, FD4000, tag, owner, clock, TYPE_FD4000)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void fd2000_device::device_start()
{
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void fd2000_device::device_reset()
{
}
//-------------------------------------------------
// cbm_iec_srq -
//-------------------------------------------------
void fd2000_device::cbm_iec_srq(int state)
{
}
//-------------------------------------------------
// cbm_iec_atn -
//-------------------------------------------------
void fd2000_device::cbm_iec_atn(int state)
{
}
//-------------------------------------------------
// cbm_iec_data -
//-------------------------------------------------
void fd2000_device::cbm_iec_data(int state)
{
}
//-------------------------------------------------
// cbm_iec_reset -
//-------------------------------------------------
void fd2000_device::cbm_iec_reset(int state)
{
if (!state)
{
device_reset();
}
}
|