Advanced Configuration and Power Interface Specification

Advanced Configuration and Power Interface Specification
}
MR0A, 4,
MR0B, 4
19.6.47 FindSetLeftBit (Find First Set Left Bit)
Syntax
FindSetLeftBit (Source, Result) => Integer
Arguments
Source is evaluated as an Integer.
Description
The one-based bit location of the first MSb (most significant set bit) is optionally stored into Result.
The result of 0 means no bit was set, 1 means the left-most bit set is the first bit, 2 means the leftmost
bit set is the second bit, and so on.
19.6.48 FindSetRightBit (Find First Set Right Bit)
Syntax
FindSetRightBit (Source, Result) => Integer
Arguments
Source is evaluated as an Integer.
Description
The one-based bit location of the most LSb (least significant set bit) is optionally stored in Result.
The result of 0 means no bit was set, 32 means the first bit set is the thirty-second bit, 31 means the
first bit set is the thirty-first bit, and so on.
19.6.49 FixedDMA (DMA Resource Descriptor Macro)
Syntax
FixedDMA (DmaRequestLine, Channel, DmaTransferWidth, DescriptorName) => Buffer
Arguments
DmaRequestLine is a system-relative number uniquely identifying the request line statically
assigned to the device.. The bit field name _DMA is automatically created to refer to this portion of
the resource descriptor.
Channel is a controller-relative number uniquely identifying the channel statically assigned to this
DMARequestLine. Channels can be shared by reusing Channel numbers across descriptors. The bit
field name _TYP is automatically created to refer to this portion of the resource descriptor.
DmaTransferWidth is an optional argument specifying the width of data transfer for which the
device is configured. Valid values are Width8Bit, Width16Bit, Width32Bit,Width64Bit, Width
840 April, 2015 Version 6.0