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|
// license:BSD-3-Clause
// copyright-holders:smf
#include "emu.h"
#include "atahle.h"
#define LOG_COMMAND (1U << 1)
#define LOG_READ (1U << 2)
#define LOG_READDATA (1U << 3)
#define LOG_READSTATUS (1U << 4)
#define LOG_READCOMPLETED (1U << 5)
#define LOG_WRITE (1U << 6)
#define LOG_WRITEDATA (1U << 7)
#define LOG_WRITECOMPLETED (1U << 8)
//#define VERBOSE (LOG_GENERAL | LOG_COMMAND | LOG_READ | /* LOG_READDATA | LOG_READSTATUS | */ LOG_READCOMPLETED | LOG_WRITE | /* LOG_WRITEDATA | */ LOG_WRITECOMPLETED)
//#define LOG_OUTPUT_FUNC osd_printf_info
#include "logmacro.h"
#define LOGCOMMAND(...) LOGMASKED(LOG_COMMAND, __VA_ARGS__)
#define LOGREAD(...) LOGMASKED(LOG_READ, __VA_ARGS__)
#define LOGREADDATA(...) LOGMASKED(LOG_READDATA, __VA_ARGS__)
#define LOGREADSTATUS(...) LOGMASKED(LOG_READSTATUS, __VA_ARGS__)
#define LOGREADCOMPLETED(...) LOGMASKED(LOG_READCOMPLETED, __VA_ARGS__)
#define LOGWRITE(...) LOGMASKED(LOG_WRITE, __VA_ARGS__)
#define LOGWRITEDATA(...) LOGMASKED(LOG_WRITEDATA, __VA_ARGS__)
#define LOGWRITECOMPLETED(...) LOGMASKED(LOG_WRITECOMPLETED, __VA_ARGS__)
enum
{
IDE_CS0_DATA_RW = 0,
IDE_CS0_ERROR_R = 1,
IDE_CS0_FEATURE_W = 1,
IDE_CS0_SECTOR_COUNT_RW = 2,
IDE_CS0_SECTOR_NUMBER_RW = 3,
IDE_CS0_CYLINDER_LOW_RW = 4,
IDE_CS0_CYLINDER_HIGH_RW = 5,
IDE_CS0_DEVICE_HEAD_RW = 6,
IDE_CS0_STATUS_R = 7,
IDE_CS0_COMMAND_W = 7
};
enum
{
IDE_CS1_ALTERNATE_STATUS_R = 6,
IDE_CS1_DEVICE_CONTROL_W = 6,
IDE_CS1_ACTIVE_STATUS = 7
};
enum
{
IDE_DEVICE_CONTROL_NIEN = 0x02,
IDE_DEVICE_CONTROL_SRST = 0x04
};
#define DETECT_DEVICE1_TIME (attotime::from_msec(2))
#define DEVICE1_PDIAG_TIME (attotime::from_msec(2))
#define DIAGNOSTIC_TIME (attotime::from_msec(2))
ata_hle_device_base::ata_hle_device_base(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, type, tag, owner, clock),
m_buffer_offset(0),
m_buffer_size(0),
m_error(0),
m_feature(0),
m_sector_count(0),
m_sector_number(0),
m_cylinder_low(0),
m_cylinder_high(0),
m_device_head(0),
m_status(0),
m_command(0),
m_device_control(0),
m_revert_to_defaults(true),
m_8bit_data_transfers(false),
m_csel(0),
m_daspin(0),
m_daspout(0),
m_dmack(0),
m_dmarq(0),
m_irq(0),
m_pdiagin(0),
m_pdiagout(0),
m_single_device(0),
m_resetting(0), m_busy_timer(nullptr), m_buffer_empty_timer(nullptr)
{
}
void ata_hle_device_base::device_start()
{
MINIMUM_COMMAND_TIME = attotime::from_usec(10);
m_buffer.resize(sector_length());
save_item(NAME(m_buffer));
save_item(NAME(m_buffer_offset));
save_item(NAME(m_buffer_size));
save_item(NAME(m_error));
save_item(NAME(m_feature));
save_item(NAME(m_sector_count));
save_item(NAME(m_sector_number));
save_item(NAME(m_cylinder_low));
save_item(NAME(m_cylinder_high));
save_item(NAME(m_device_head));
save_item(NAME(m_status));
save_item(NAME(m_command));
save_item(NAME(m_device_control));
save_item(NAME(m_revert_to_defaults));
save_item(NAME(m_8bit_data_transfers));
save_item(NAME(m_single_device));
save_item(NAME(m_resetting));
save_item(NAME(m_csel));
save_item(NAME(m_daspin));
save_item(NAME(m_daspout));
save_item(NAME(m_dmack));
save_item(NAME(m_dmarq));
save_item(NAME(m_irq));
save_item(NAME(m_pdiagin));
save_item(NAME(m_pdiagout));
save_item(NAME(m_identify_buffer));
m_busy_timer = timer_alloc(FUNC(ata_hle_device_base::busy_tick), this);
m_buffer_empty_timer = timer_alloc(FUNC(ata_hle_device_base::empty_tick), this);
}
void ata_hle_device_base::device_reset()
{
set_dasp(CLEAR_LINE);
set_dmarq(CLEAR_LINE);
set_irq(CLEAR_LINE);
set_pdiag(CLEAR_LINE);
m_status = 0;
m_device_control = 0;
m_resetting = true;
if (m_csel == 0)
start_busy(DETECT_DEVICE1_TIME, PARAM_DETECT_DEVICE1);
else
{
set_dasp(ASSERT_LINE);
soft_reset();
}
}
void ata_hle_device_base::soft_reset()
{
m_buffer_offset = 0;
m_buffer_size = 0;
m_status = 0;
if (is_ready())
m_status |= IDE_STATUS_DRDY;
start_busy(DIAGNOSTIC_TIME, PARAM_DIAGNOSTIC);
}
TIMER_CALLBACK_MEMBER(ata_hle_device_base::busy_tick)
{
m_status &= ~IDE_STATUS_BSY;
finished_busy(param);
}
TIMER_CALLBACK_MEMBER(ata_hle_device_base::empty_tick)
{
m_buffer_empty_timer->enable(false);
fill_buffer();
}
void ata_hle_device_base::finished_busy(int32_t param)
{
switch (param)
{
case PARAM_DETECT_DEVICE1:
m_single_device = (m_daspin == CLEAR_LINE);
soft_reset();
break;
case PARAM_DIAGNOSTIC:
start_diagnostic();
break;
case PARAM_WAIT_FOR_PDIAG:
m_error |= IDE_ERROR_DIAGNOSTIC_DEVICE1_FAILED;
finished_diagnostic();
break;
case PARAM_COMMAND:
finished_command();
break;
}
}
void ata_hle_device_base::process_command()
{
switch (m_command)
{
case IDE_COMMAND_DIAGNOSTIC:
start_busy(DIAGNOSTIC_TIME, PARAM_COMMAND);
break;
case IDE_COMMAND_SET_FEATURES:
start_busy(MINIMUM_COMMAND_TIME, PARAM_COMMAND);
break;
case IDE_COMMAND_CACHE_FLUSH:
start_busy(MINIMUM_COMMAND_TIME, PARAM_COMMAND);
break;
default:
LOG("%s device %d process_command() unknown command (0x%02x)\n", machine().describe_context(), m_csel, m_command);
m_status |= IDE_STATUS_ERR;
m_error = IDE_ERROR_ABRT;
set_irq(ASSERT_LINE);
//machine().debug_break();
break;
}
}
void ata_hle_device_base::finished_command()
{
switch (m_command)
{
case IDE_COMMAND_DIAGNOSTIC:
start_diagnostic();
if (m_csel == 0)
set_irq(ASSERT_LINE);
break;
case IDE_COMMAND_SET_FEATURES:
if (!set_features())
{
LOGCOMMAND("IDE Set features failed (%02X %02X %02X %02X %02X)\n", m_feature, m_sector_count & 0xff, m_sector_number, m_cylinder_low, m_cylinder_high);
m_status |= IDE_STATUS_ERR;
m_error = IDE_ERROR_ABRT;
}
set_irq(ASSERT_LINE);
break;
case IDE_COMMAND_CACHE_FLUSH:
m_status |= IDE_STATUS_DRDY;
break;
default:
LOG("device %d finished_command() unhandled command 0x%02x\n", m_csel, m_command);
break;
}
}
void ata_hle_device_base::clear_dma_modes()
{
m_identify_buffer[62] &= 0xff;
m_identify_buffer[63] &= 0xff;
m_identify_buffer[88] &= 0xff;
}
bool ata_hle_device_base::set_dma_mode(int word)
{
if ((m_identify_buffer[word] >> (m_sector_count & 7)) & 1)
{
clear_dma_modes();
m_identify_buffer[word] |= 0x100 << (m_sector_count & 7);
return true;
}
return false;
}
bool ata_hle_device_base::set_features()
{
switch (m_feature)
{
case IDE_SET_FEATURES_ENABLE_8BIT_DATA_TRANSFERS:
m_8bit_data_transfers = true;
return true;
case IDE_SET_FEATURES_TRANSFER_MODE:
switch (m_sector_count & IDE_TRANSFER_TYPE_MASK)
{
case IDE_TRANSFER_TYPE_PIO_DEFAULT:
switch (m_sector_count & 7)
{
case 0:
case 1:
return true;
}
break;
case IDE_TRANSFER_TYPE_PIO_FLOW_CONTROL:
switch (m_sector_count & 7)
{
case 0:
case 1:
case 2:
return true;
default:
if ((m_identify_buffer[64] >> ((m_sector_count & 7) - 3)) & 1)
{
clear_dma_modes();
return true;
}
}
break;
case IDE_TRANSFER_TYPE_SINGLE_WORD_DMA:
return set_dma_mode(62);
case IDE_TRANSFER_TYPE_MULTI_WORD_DMA:
return set_dma_mode(63);
case IDE_TRANSFER_TYPE_ULTRA_DMA:
return set_dma_mode(88);
}
break;
case IDE_SET_FEATURES_DISABLE_REVERTING_TO_POWER_ON_DEFAULTS:
m_revert_to_defaults = false;
return true;
case IDE_SET_FEATURES_DISABLE_8BIT_DATA_TRANSFERS:
m_8bit_data_transfers = false;
return true;
case IDE_SET_FEATURES_ENABLE_REVERTING_TO_POWER_ON_DEFAULTS:
m_revert_to_defaults = true;
return true;
case IDE_SET_FEATURES_ENABLE_ECC:
case IDE_SET_FEATURES_ENABLE_RETRIES:
case IDE_SET_FEATURES_ENABLE_READ_LOOK_AHEAD:
// not actually handled, but reply as if we did
return true;
}
return false;
}
int ata_hle_device_base::bit_to_mode(uint16_t word)
{
switch (word >> 8)
{
case 0x01:
return 0;
case 0x02:
return 1;
case 0x04:
return 2;
case 0x08:
return 3;
case 0x10:
return 4;
case 0x20:
return 5;
case 0x40:
return 6;
case 0x80:
return 7;
}
return -1;
}
int ata_hle_device_base::single_word_dma_mode()
{
return bit_to_mode(m_identify_buffer[62]);
}
int ata_hle_device_base::multi_word_dma_mode()
{
return bit_to_mode(m_identify_buffer[63]);
}
int ata_hle_device_base::ultra_dma_mode()
{
return bit_to_mode(m_identify_buffer[88]);
}
uint16_t ata_hle_device_base::read_data()
{
uint16_t result = m_buffer[m_buffer_offset++];
if (!m_8bit_data_transfers)
result |= m_buffer[m_buffer_offset++] << 8;
if (m_buffer_offset >= m_buffer_size)
{
LOGREADCOMPLETED("%s device %d read_data() completed\n", machine().describe_context(), m_csel);
read_buffer_empty();
}
return result;
}
void ata_hle_device_base::write_data(uint16_t data)
{
m_buffer[m_buffer_offset++] = data;
if (!m_8bit_data_transfers)
m_buffer[m_buffer_offset++] = data >> 8;
if (m_buffer_offset >= m_buffer_size)
{
LOGWRITECOMPLETED("%s device %d write_data() completed\n", machine().describe_context(), m_csel);
write_buffer_full();
}
}
void ata_hle_device_base::update_irq()
{
if (device_selected() && (m_device_control & IDE_DEVICE_CONTROL_NIEN) == 0)
set_irq_out(m_irq);
else
set_irq_out(CLEAR_LINE);
}
void ata_hle_device_base::start_busy(const attotime &time, int32_t param)
{
m_status |= IDE_STATUS_BSY;
m_busy_timer->adjust(time, param);
}
void ata_hle_device_base::stop_busy()
{
m_status &= ~IDE_STATUS_BSY;
m_busy_timer->adjust(attotime::never);
}
void ata_hle_device_base::read_buffer_empty()
{
m_buffer_offset = 0;
m_status &= ~IDE_STATUS_DRQ;
set_dmarq(CLEAR_LINE);
if (ultra_dma_mode() >= 0)
{
m_buffer_empty_timer->enable(true);
m_buffer_empty_timer->adjust(attotime::zero);
}
else
fill_buffer();
}
void ata_hle_device_base::write_buffer_full()
{
m_buffer_offset = 0;
m_status &= ~IDE_STATUS_DRQ;
set_dmarq(CLEAR_LINE);
process_buffer();
}
void ata_hle_device_base::start_diagnostic()
{
m_error = IDE_ERROR_DIAGNOSTIC_FAILED;
perform_diagnostic();
if (m_csel == 1 && m_error == IDE_ERROR_DIAGNOSTIC_PASSED)
set_pdiag(ASSERT_LINE);
if (m_csel == 0 && !m_single_device && m_pdiagin == CLEAR_LINE)
start_busy(DEVICE1_PDIAG_TIME, PARAM_WAIT_FOR_PDIAG);
else
finished_diagnostic();
}
void ata_hle_device_base::finished_diagnostic()
{
m_resetting = false;
signature();
}
void ata_hle_device_base::set_dmack_in(int state)
{
if (state && !m_dmack && single_word_dma_mode() >= 0)
set_dmarq(CLEAR_LINE);
m_dmack = state;
}
void ata_hle_device_base::set_pdiag_in(int state)
{
m_pdiagin = state;
if (m_pdiagin == ASSERT_LINE && m_busy_timer->param() == PARAM_WAIT_FOR_PDIAG)
{
stop_busy();
finished_diagnostic();
}
}
uint16_t ata_hle_device_base::dma_r()
{
if (device_selected())
{
if (!m_dmack)
LOG("%s device %d dma_r 0x%04x (ignored DMACK)\n", machine().describe_context(), m_csel, 0xffff);
else if (m_dmarq && single_word_dma_mode() >= 0)
LOG("%s device %d dma_r 0x%04x (ignored DMARQ)\n", machine().describe_context(), m_csel, 0xffff);
else if (!m_dmarq && multi_word_dma_mode() >= 0)
LOG("%s device %d dma_r 0x%04x (ignored !DMARQ)\n", machine().describe_context(), m_csel, 0xffff);
else if (!m_dmarq && ultra_dma_mode() >= 0)
LOG("%s device %d dma_r 0x%04x (ignored !DMARQ)\n", machine().describe_context(), m_csel, 0xffff);
else if (m_status & IDE_STATUS_BSY)
LOG("%s device %d dma_r 0x%04x (ignored BSY)\n", machine().describe_context(), m_csel, 0xffff);
else if (!(m_status & IDE_STATUS_DRQ))
LOG("%s device %d dma_r 0x%04x (ignored !DRQ)\n", machine().describe_context(), m_csel, 0xffff);
else
{
uint16_t data = read_data();
if ((m_status & IDE_STATUS_DRQ) && single_word_dma_mode() >= 0)
set_dmarq(ASSERT_LINE);
LOGREADDATA("%s device %d dma_r 0x%04x\n", machine().describe_context(), m_csel, data);
return data;
}
}
return 0xffff;
}
uint16_t ata_hle_device_base::command_r(offs_t offset)
{
if (!(m_status & IDE_STATUS_DRDY) && is_ready())
m_status |= IDE_STATUS_DRDY;
if (device_selected() || m_single_device)
{
if (m_dmack)
{
if (!machine().side_effects_disabled())
LOG("%s device %d cs0_r (0x%x) 0x%04x (ignored DMACK)\n", machine().describe_context(), dev(), offset, 0xffff);
}
else if ((m_status & IDE_STATUS_BSY) && offset != IDE_CS0_DATA_RW)
{
uint8_t status = device_selected() ? calculate_status() : 0;
if (!machine().side_effects_disabled())
LOGREADSTATUS("%s device %d cs0_r (0x%x) 0x%04x (status BSY)\n", machine().describe_context(), dev(), offset, status);
return status;
}
else
{
switch (offset)
{
case IDE_CS0_DATA_RW:
if (!device_selected())
{
if (!machine().side_effects_disabled())
LOG("%s device %d cs0_r data 0x%04x (ignored !selected)\n", machine().describe_context(), dev(), 0xffff);
}
else if (m_status & IDE_STATUS_BSY)
{
if (!machine().side_effects_disabled())
LOG("%s device %d cs0_r data 0x%04x (ignored BSY)\n", machine().describe_context(), dev(), 0xffff);
}
else if (!(m_status & IDE_STATUS_DRQ))
{
if (!machine().side_effects_disabled())
LOG("%s device %d cs0_r data 0x%04x (ignored !DRQ)\n", machine().describe_context(), dev(), 0xffff);
}
else
{
uint16_t data = device_selected() ? read_data() : 0xffff;
LOGREADDATA("%s device %d cs0_r data 0x%04x\n", machine().describe_context(), m_csel, data);
return data;
}
break;
case IDE_CS0_ERROR_R:
if (!machine().side_effects_disabled())
LOGREAD("%s device %d cs0_r error register 0x%02x\n", machine().describe_context(), dev(), m_error);
return m_error;
case IDE_CS0_SECTOR_COUNT_RW:
if (!machine().side_effects_disabled())
LOGREAD("%s device %d cs0_r sector count 0x%02x\n", machine().describe_context(), dev(), m_sector_count);
return m_sector_count;
case IDE_CS0_SECTOR_NUMBER_RW:
if (!machine().side_effects_disabled())
LOGREAD("%s device %d cs0_r sector number 0x%02x\n", machine().describe_context(), dev(), m_sector_number);
return m_sector_number;
case IDE_CS0_CYLINDER_LOW_RW:
if (!machine().side_effects_disabled())
LOGREAD("%s device %d cs0_r cylinder low 0x%02x\n", machine().describe_context(), dev(), m_cylinder_low);
return m_cylinder_low;
case IDE_CS0_CYLINDER_HIGH_RW:
if (!machine().side_effects_disabled())
LOGREAD("%s device %d cs0_r cylinder high 0x%02x\n", machine().describe_context(), dev(), m_cylinder_high);
return m_cylinder_high;
case IDE_CS0_DEVICE_HEAD_RW:
if (!machine().side_effects_disabled())
LOGREAD("%s device %d cs0_r device/head 0x%02x\n", machine().describe_context(), dev(), m_device_head);
return m_device_head;
case IDE_CS0_STATUS_R:
{
uint8_t status = device_selected() ? calculate_status() : 0;
if (device_selected())
set_irq(CLEAR_LINE);
if (!machine().side_effects_disabled())
LOGREADSTATUS("%s device %d cs0_r status 0x%04x\n", machine().describe_context(), dev(), status);
return status;
}
default:
if (!machine().side_effects_disabled())
LOG("%s device %d cs0_r unknown (0x%x) 0x%04x\n", machine().describe_context(), dev(), offset, 0xffff);
}
}
}
return 0xffff;
}
uint16_t ata_hle_device_base::control_r(offs_t offset)
{
if (!(m_status & IDE_STATUS_DRDY) && is_ready())
m_status |= IDE_STATUS_DRDY;
if (device_selected() || m_single_device)
{
if (m_dmack)
{
if (!machine().side_effects_disabled())
LOG("%s device %d cs1_r (0x%x) 0x%0x (ignored DMACK)\n", machine().describe_context(), dev(), offset, 0xffff);
return 0xffff;
}
else
{
switch (offset)
{
case IDE_CS1_ALTERNATE_STATUS_R:
{
uint8_t status = device_selected() ? calculate_status() : 0;
if (!machine().side_effects_disabled())
LOGREADSTATUS("%s device %d cs1_r status 0x%04x\n", machine().describe_context(), dev(), status);
return status;
}
case IDE_CS1_ACTIVE_STATUS:
{
uint8_t active_status = device_selected() ? 1 : 0;
/*
bit description
0 master active
1 slave active
2 complement of active disk head bit 0
3 complement of active disk head bit 1
4 complement of active disk head bit 2
5 complement of active disk head bit 3
6 write in progress
7 floppy present (unused)
*/
if (!machine().side_effects_disabled())
LOGREAD("%s device %d cs1_r active status 0x%04x\n", machine().describe_context(), dev(), active_status);
return active_status;
}
default:
if (!machine().side_effects_disabled())
LOG("%s device %d cs1_r unknown (0x%x) 0x%04x\n", machine().describe_context(), dev(), offset, 0xffff);
return 0xffff;
}
}
}
return 0xffff;
}
void ata_hle_device_base::dma_w(uint16_t data)
{
if (device_selected())
{
if (!m_dmack)
LOG("%s device %d dma_w 0x%04x (ignored !DMACK)\n", machine().describe_context(), m_csel, data);
else if (m_dmarq && single_word_dma_mode() >= 0)
LOG("%s device %d dma_w 0x%04x (ignored DMARQ)\n", machine().describe_context(), m_csel, data);
else if (!m_dmarq && multi_word_dma_mode() >= 0)
LOG("%s device %d dma_w 0x%04x (ignored !DMARQ)\n", machine().describe_context(), m_csel, data);
else if (!m_dmarq && ultra_dma_mode() >= 0)
LOG("%s device %d dma_w 0x%04x (ignored !DMARQ)\n", machine().describe_context(), m_csel, data);
else if (m_status & IDE_STATUS_BSY)
LOG("%s device %d dma_w 0x%04x (ignored BSY)\n", machine().describe_context(), m_csel, data);
else if (!(m_status & IDE_STATUS_DRQ))
LOG("%s device %d dma_w 0x%04x (ignored !DRQ)\n", machine().describe_context(), m_csel, data);
else
{
write_data(data);
if ((m_status & IDE_STATUS_DRQ) && single_word_dma_mode() >= 0)
set_dmarq(ASSERT_LINE);
}
}
}
void ata_hle_device_base::command_w(offs_t offset, uint16_t data)
{
if ((m_status & IDE_STATUS_DRQ) && offset != IDE_CS0_DATA_RW && (offset != IDE_CS0_DEVICE_HEAD_RW || data != m_device_head))
{
LOG("%s device %d cs0_w (0x%x) aborted after %d bytes (%02x)\n", machine().describe_context(), m_csel, offset, m_buffer_offset, m_command);
stop_busy();
m_status &= ~IDE_STATUS_DRQ;
set_dmarq(CLEAR_LINE);
m_status |= IDE_STATUS_ERR;
m_error = IDE_ERROR_ABRT;
}
if (m_status & IDE_STATUS_BSY)
LOG("%s device %d cs0_w (0x%x) 0x%04x (ignored BSY)\n", machine().describe_context(), m_csel, offset, data);
else if (m_dmack)
LOG("%s device %d cs0_w (0x%x) 0x%04x (ignored DMACK)\n", machine().describe_context(), m_csel, offset, data);
else
{
switch (offset)
{
case IDE_CS0_DATA_RW:
if (device_selected() || m_single_device)
{
if (!device_selected())
LOG("%s device %d cs0_w data 0x%04x (ignored !selected)\n", machine().describe_context(), m_csel, data);
else if (!(m_status & IDE_STATUS_DRQ))
LOG("%s device %d cs0_w data 0x%04x (ignored !DRQ)\n", machine().describe_context(), m_csel, data);
else
{
LOGWRITEDATA("%s device %d cs0_w data 0x%04x\n", machine().describe_context(), m_csel, data);
write_data(data);
}
}
break;
case IDE_CS0_FEATURE_W:
LOGWRITE("%s device %d cs0_w feature 0x%02x\n", machine().describe_context(), m_csel, data);
m_feature = data;
break;
case IDE_CS0_SECTOR_COUNT_RW:
LOGWRITE("%s device %d cs0_w sector count 0x%02x\n", machine().describe_context(), m_csel, data);
m_sector_count = (data & 0xff) ? (data & 0xff) : 0x100;
break;
case IDE_CS0_SECTOR_NUMBER_RW:
LOGWRITE("%s device %d cs0_w sector number 0x%02x\n", machine().describe_context(), m_csel, data);
m_sector_number = data;
break;
case IDE_CS0_CYLINDER_LOW_RW:
LOGWRITE("%s device %d cs0_w cylinder low 0x%02x\n", machine().describe_context(), m_csel, data);
m_cylinder_low = data;
break;
case IDE_CS0_CYLINDER_HIGH_RW:
LOGWRITE("%s device %d cs0_w cylinder high 0x%02x\n", machine().describe_context(), m_csel, data);
m_cylinder_high = data;
break;
case IDE_CS0_DEVICE_HEAD_RW:
{
LOGWRITE("%s device %d cs0_w device/head 0x%02x\n", machine().describe_context(), m_csel, data);
bool drv_changed = ((m_device_head ^ data) & IDE_DEVICE_HEAD_DRV) != 0;
m_device_head = data;
if (drv_changed)
update_irq();
break;
}
case IDE_CS0_COMMAND_W:
if (device_selected() || m_command == IDE_COMMAND_DIAGNOSTIC)
{
LOGWRITE("%s device %d cs0_w command 0x%02x\n", machine().describe_context(), m_csel, data);
m_command = data;
m_buffer_offset = 0;
m_status &= ~IDE_STATUS_ERR;
m_error = IDE_ERROR_NONE;
set_irq(CLEAR_LINE);
set_dasp(CLEAR_LINE);
process_command();
}
break;
default:
LOG("%s device %d cs0_w unknown (0x%x) 0x%02x\n", machine().describe_context(), m_csel, offset, data);
break;
}
}
}
void ata_hle_device_base::control_w(offs_t offset, uint16_t data)
{
if (m_dmack)
LOG("%s device %d cs1_w (0x%x) 0x%04x (ignored DMACK)\n", machine().describe_context(), m_csel, offset, data);
else
{
switch (offset)
{
case IDE_CS1_DEVICE_CONTROL_W:
{
LOGWRITE("%s device %d cs1_w device control 0x%02x\n", machine().describe_context(), m_csel, data);
uint8_t old = m_device_control;
m_device_control = data;
if ((m_device_control ^ old) & IDE_DEVICE_CONTROL_NIEN)
update_irq();
if ((m_device_control ^ old) & IDE_DEVICE_CONTROL_SRST)
{
if (m_device_control & IDE_DEVICE_CONTROL_SRST)
{
if (m_resetting)
LOG("%s device %d cs1_w (0x%x) %04x (ignored RESET)\n", machine().describe_context(), m_csel, offset, data);
else
{
set_dasp(CLEAR_LINE);
set_dmarq(CLEAR_LINE);
set_irq(CLEAR_LINE);
set_pdiag(CLEAR_LINE);
start_busy(attotime::never, PARAM_RESET);
}
}
else if (m_busy_timer->param() == PARAM_RESET)
soft_reset();
}
break;
}
default:
LOG("%s device %d cs1_w unknown (0x%x) 0x%02x\n", machine().describe_context(), m_csel, offset, data);
break;
}
}
}
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