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Kernel: Add a kernel boot parameter to force PIO mode
Also added an option in the run script to force PIO operation mode with the IDE controller. In addition, we're no longer limited to PIIX3 and PIIX4 chipsets for DMA
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5 changed files with 32 additions and 23 deletions
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@ -24,7 +24,7 @@ const char* PATADiskDevice::class_name() const
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bool PATADiskDevice::read_blocks(unsigned index, u16 count, u8* out)
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{
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if (m_channel.m_bus_master_base && m_channel.m_dma_enabled.resource())
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if (m_channel.m_bus_master_base && m_channel.m_dma_enabled.resource() && !m_channel.m_force_pio.resource())
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return read_sectors_with_dma(index, count, out);
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return read_sectors(index, count, out);
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}
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