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// license:BSD-3-Clause
// copyright-holders:smf
#include "omti5100.h"
#define OMTI_STATUS_SEEK_FAIL 0x02
#define OMTI_STATUS_NOT_READY 0x04
#define OMTI_CHECK_TRACK_FORMAT 0x05
#define OMTI_FORMAT_TRACK 0x06
#define OMTI_READ_DATA_BUFFER 0xec
#define OMTI_ASSIGN_DISK_PARAM 0xc2
const device_type OMTI5100 = &device_creator<omti5100_device>;
#if 0
ROM_START( omti5100 )
ROM_REGION(0x1000, "mcu", 0) // Hitachi Z8
ROM_LOAD("100240-N.7a", 0x0000, 0x1000, CRC(d227d6cb) SHA1(3d6140764d3d043428c941826370ebf1597c63bd))
ROM_END
const rom_entry *omti5100_device::device_rom_region() const
{
return ROM_NAME( omti5100 );
}
#endif
omti5100_device::omti5100_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: scsihd_device(mconfig, OMTI5100, "OMTI 5100", tag, owner, clock, "omti5100", __FILE__),
m_image0(*this, "image0"),
m_image1(*this, "image1")
{
}
void omti5100_device::device_start()
{
if(!m_image0->get_hard_disk_file())
m_image = m_image1;
m_image = m_image0;
scsihle_device::device_start();
}
void omti5100_device::ExecCommand()
{
int drive = (command[1] >> 5) & 1;
hard_disk_file *image = (drive ? m_image1 : m_image0)->get_hard_disk_file();
if(!image)
{
if(command[0] == T10SPC_CMD_REQUEST_SENSE)
return scsihd_device::ExecCommand();
m_phase = SCSI_PHASE_STATUS;
m_status_code = SCSI_STATUS_CODE_CHECK_CONDITION;
m_sense_asc = OMTI_STATUS_NOT_READY;
m_transfer_length = 0;
return;
}
hard_disk_info *info = hard_disk_get_info(image);
switch(command[0])
{
case OMTI_READ_DATA_BUFFER:
m_phase = SCSI_PHASE_DATAIN;
m_status_code = SCSI_STATUS_CODE_GOOD;
m_transfer_length = 512;
break;
case OMTI_ASSIGN_DISK_PARAM:
m_phase = SCSI_PHASE_DATAOUT;
m_status_code = SCSI_STATUS_CODE_GOOD;
m_transfer_length = 10;
break;
case OMTI_CHECK_TRACK_FORMAT:
m_phase = SCSI_PHASE_STATUS;
m_status_code = SCSI_STATUS_CODE_GOOD;
m_transfer_length = 0;
break;
case T10SBC_CMD_READ_6:
{
int track = ((command[1]&0x1f)<<16 | command[2]<<8 | command[3]) / (m_param[drive].sectors ? m_param[drive].sectors : 1);
int heads = m_param[drive].heads ? m_param[drive].heads : 1;
if(((track % heads) > info->heads) || (track >= (info->cylinders * heads)))
{
m_phase = SCSI_PHASE_STATUS;
m_status_code = SCSI_STATUS_CODE_CHECK_CONDITION;
m_sense_asc = OMTI_STATUS_SEEK_FAIL;
m_transfer_length = 0;
}
else
{
SetDevice(image);
scsihd_device::ExecCommand();
}
break;
}
case OMTI_FORMAT_TRACK:
{
int track = ((command[1]&0x1f)<<16 | command[2]<<8 | command[3]) / m_param[drive].sectors;
if(((track % m_param[drive].heads) <= info->heads) && (track < (info->cylinders * m_param[drive].heads)))
{
dynamic_buffer sector(info->sectorbytes);
memset(§or[0], 0xe5, info->sectorbytes);
m_phase = SCSI_PHASE_STATUS;
m_status_code = SCSI_STATUS_CODE_GOOD;
m_transfer_length = 0;
for(int i = 0; i < info->sectors; i++)
hard_disk_write(image, track * info->sectors + i, §or[0]);
}
else
{
m_phase = SCSI_PHASE_STATUS;
m_status_code = SCSI_STATUS_CODE_CHECK_CONDITION;
m_sense_asc = OMTI_STATUS_SEEK_FAIL;
m_transfer_length = 0;
}
break;
}
default:
SetDevice(image);
scsihd_device::ExecCommand();
break;
}
}
void omti5100_device::ReadData( UINT8 *data, int dataLength )
{
switch( command[ 0 ] )
{
case OMTI_READ_DATA_BUFFER:
data[0] = '5';
data[1] = '1';
data[2] = '0';
data[3] = '0';
break;
default:
scsihd_device::ReadData( data, dataLength );
break;
}
}
void omti5100_device::WriteData( UINT8 *data, int dataLength )
{
switch( command[ 0 ] )
{
case OMTI_ASSIGN_DISK_PARAM:
{
int drive = ((command[1] >> 5) & 1);
hard_disk_file *image = (drive ? m_image1 : m_image0)->get_hard_disk_file();
m_param[drive].heads = data[3] + 1;
m_param[drive].cylinders = ((data[4] << 8) | data[5]) + 1;
if(!data[8] && image)
{
switch(hard_disk_get_info(image)->sectorbytes)
{
case 128:
m_param[drive].sectors = 53;
break;
case 256:
m_param[drive].sectors = 32;
break;
case 512:
m_param[drive].sectors = 18; // XXX: check this!
break;
case 1024:
m_param[drive].sectors = 9;
break;
}
}
else
m_param[drive].sectors = data[8] + 1;
break;
}
default:
scsihd_device::WriteData( data, dataLength );
break;
}
}
static MACHINE_CONFIG_FRAGMENT( omti5100 )
MCFG_HARDDISK_ADD("image0")
MCFG_HARDDISK_ADD("image1")
MACHINE_CONFIG_END
machine_config_constructor omti5100_device::device_mconfig_additions() const
{
return MACHINE_CONFIG_NAME( omti5100 );
}
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