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ATA: don't abort commands if the drive/head register is written with the current value, fixes regression in 5fcf2f031c with shutms11 detecting a hard drive.

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smf- 2025-02-13 11:31:24 +00:00
parent 611e25f368
commit 6c3bb65823
1 changed files with 4 additions and 4 deletions
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8
src/devices/machine/atahle.cpp
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@ -519,7 +519,7 @@ uint16_t ata_hle_device_base::dma_r()
if ((m_status & IDE_STATUS_DRQ) && single_word_dma_mode() >= 0)
set_dmarq(ASSERT_LINE);
LOGREADDATA("%s device %d dma_r 0x%04x\n", data);
LOGREADDATA("%s device %d dma_r 0x%04x\n", machine().describe_context(), m_csel, data);
return data;
}
}
@ -571,7 +571,7 @@ uint16_t ata_hle_device_base::command_r(offs_t offset)
else
{
uint16_t data = device_selected() ? read_data() : 0xffff;
LOGREADDATA("%s device %d cs0_r data 0x%04x\n", data);
LOGREADDATA("%s device %d cs0_r data 0x%04x\n", machine().describe_context(), m_csel, data);
return data;
}
break;
@ -727,9 +727,9 @@ void ata_hle_device_base::dma_w(uint16_t data)
void ata_hle_device_base::command_w(offs_t offset, uint16_t data)
{
if ((m_status & (IDE_STATUS_DRQ | IDE_STATUS_BSY)) && offset != IDE_CS0_DATA_RW)
if ((m_status & (IDE_STATUS_DRQ | IDE_STATUS_BSY)) && offset != IDE_CS0_DATA_RW && (offset != IDE_CS0_DEVICE_HEAD_RW || data != m_device_head))
{
LOGREADCOMPLETED("%s device %d cs0_w (0x%x) aborted after %d bytes\n", machine().describe_context(), m_csel, offset, m_buffer_offset);
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);