1.4.6 Device Memory Access

For the following, XXX_REGISTER_XXX indicates device memory that is mapped onto system space, while XXX_PORT_XXX indicates device memory in I/O space.

READ_PORT_UCHAR 

Reads a UCHAR value from the given I/O port address.

READ_PORT_USHORT 

Reads a USHORT value from the given I/O port address.

READ_PORT_ULONG 

Reads a ULONG value from the given I/O port address.

READ_PORT_BUFFER_UCHAR 

Reads a given count of UCHAR values from the given I/O port into a given buffer.

READ_PORT_BUFFER_USHORT 

Reads a given count of USHORT values from the given I/O port into a given buffer.

READ_PORT_BUFFER_ULONG 

Reads a given count of ULONG values from the given I/O port into a given buffer.

WRITE_PORT_UCHAR 

Writes a given UCHAR value to the given I/O port address.

WRITE_PORT_USHORT 

Writes a given USHORT value to the given I/O port address.

WRITE_PORT_ULONG 

Writes a given ULONG value to the given I/O port address.

WRITE_PORT_BUFFER_UCHAR 

Writes a given count of UCHAR values from a given buffer to the given I/O port.

WRITE_PORT_BUFFER_USHORT 

Writes a given count of USHORT values from a given buffer to the given I/O port.

WRITE_PORT_BUFFER_ULONG 

Writes a given count of ULONG values from a given buffer to the given I/O port.

READ_REGISTER_UCHAR 

Reads a UCHAR value from the given register address in memory space.

READ_REGISTER_USHORT 

Reads a USHORT value from the given register address in memory space.

READ_REGISTER_ULONG 

Reads a ULONG value from the given register address in memory space.

READ_REGISTER_BUFFER_UCHAR 

Reads a given count of UCHAR values from the given register address into the given buffer.

READ_REGISTER_BUFFER_USHORT 

Reads a given count of USHORT values from the given register address into the given buffer.

READ_REGISTER_BUFFER_ULONG 

Reads a given count of ULONG values from the given register address into the given buffer.

WRITE_REGISTER_UCHAR 

Writes a given UCHAR value to the given register address in memory space.

WRITE_REGISTER_USHORT 

Writes a given USHORT value to the given register address in memory space.

WRITE_REGISTER_ULONG 

Writes a given ULONG value to the given register address in memory space.

WRITE_REGISTER_BUFFER_UCHAR 

Writes a given count of UCHAR values from a given buffer to the given register address.

WRITE_REGISTER_BUFFER_USHORT 

Writes a given count of USHORT values from a given buffer to the given register address.

WRITE_REGISTER_BUFFER_ULONG 

Writes a given count of ULONG values from a given buffer to the given register address.