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Added CHS and LBA limits when the chd doesn't contain identify device data [smf]

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smf- 2016-06-02 11:24:39 +01:00
parent fbd8879395
commit 9d2528e12b
1 changed files with 20 additions and 0 deletions
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20
src/devices/machine/idehd.cpp
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@ -170,6 +170,26 @@ void ata_mass_storage_device::ide_build_identify_device()
m_identify_buffer[176] = 0x00; /* 176-205: current media serial number */
m_identify_buffer[206] = 0x00; /* 206-254: reserved */
m_identify_buffer[255] = 0x00; /* 255: integrity word */
if (total_sectors >= 16514064)
{
/// CHS limit
m_identify_buffer[1] = 16383; /* 1: logical cylinders */
m_identify_buffer[3] = 16; /* 3: logical heads */
m_identify_buffer[6] = 63; /* 6: logical sectors per logical track */
m_identify_buffer[54] = 16383; /* 54: number of current logical cylinders */
m_identify_buffer[55] = 16; /* 55: number of current logical heads */
m_identify_buffer[56] = 63; /* 56: number of current logical sectors per track */
m_identify_buffer[57] = 16514064 & 0xffff; /* 57-58: current capacity in sectors (ATA-1 through ATA-5; obsoleted in ATA-6) */
m_identify_buffer[58] = 16514064 >> 16;
}
if (total_sectors > 268435455)
{
/// LBA limit
m_identify_buffer[60] = 268435455 & 0xffff; /* 60-61: total user addressable sectors for LBA mode (ATA-1 through ATA-7) */
m_identify_buffer[61] = 268435455 >> 16;
}
}
//-------------------------------------------------