## Physical Device Driver Reference

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### ASYNC_GETENHANCEDMODEPARMS (74h) - Enhanced Flags1

Enhanced Flags1 Has the following settings (see Remarks for more information):

Bit 0 Enhanced mode supported by hardware.

Bit 1 Enable the Enhanced mode (default)

Bits 2-3 DMA Receive Operation request. Has the following:

Bit 3 Bit 2 Description
0 0 Disable DMA Receive Capability
0 1 Enable DMA Receive Capability (Default)
1 0 Dedicate a DMA channel to Receive operation
1 1 Reserved

Bits 4-5 DMA Transmit operation request. Has the following:

Bit 5 Bit 4 Description
0 0 Disable DMA Transmit Capability
0 1 Enable DMA Transmit Capability (Default)
1 0 Dedicate a DMA channel to Transmit operation
1 1 Reserved

Bit 6 Receive operation in DMA mode

Bit 7 Transmit operation in DMA mode