Anybody Know where I can get Down and Dirty(low level) detailed information on how Sybase implements its locking schemes, for 11.9.2?

I looked at the Performance and Tuning guide but found that it didn't contain the detailed information I was looking for.

Any help is appreciated,

TIA,

Bill

Sybase has several whitepapers (I would assume) on how it works. As an FYI, there are three schemes starting from 11.9.2 and up:
APL, DPL, DRL;
All Pages Lock(ed): both the data pages in the table and the index pages (if you have indexes) are locked on modification
DPL: Data-Page Locking (I think that's the acronym). Data pages are locked.
DRL: Data-Row locking; Data rows are locked.

I just found this online. It's from an 11.9.2 presentation but the locking still applies to the 12.X platform.

http://www.sybase.se/download/tk990121pres/sld016.htm