Izumi Tsutsui wrote:
> The busmaster reads host's memory via DMA.
> The read addresses are spcified by busmaster hardware.
> The structure is used to represent the offsets.

Then I understood. A struct cannot be used reliably to represent any offsets of
"raw" memory without additional compiler-specific extension to C like
__attribute__((__packed__). Well, never mind. 

-- 
Christian