/**
* Query a data block.
*
* @param n the block to query.
* @return the requested block
*/
Block getInitializedBlock(final int n) {
blockInitialized.set(n, 1);
block.offset = n * 16;
return block;
}
/**
* Query a data block.
*
* @param n the data block to query.
* @return the requested block
*/
Block getBlock(final int n) {
if (blockInitialized.get(n) == 0) return null;
block.offset = n * 16;
return block;
}