The following cores have to do with date and time keeping.
There is a scene in a movie where a failed date/time update is critical. I forget the name of the movie, but it presents one of the issues with date/time cores. Taking snapshots of the current date/time in order to get an accurate reading, and stopping the clock while doing date/time updates.
One of the date/time cores below (DateTime.v) deals with the issue of different date/time systems. Not everybody uses the same time and calendar systems.
Below: Picture of MC146818AP
| Time Keeping | ||
| ts_timer | system time slice timer more | ts_timer.v |
| spic | simple priority interrupt controller more | spic.v |
| bc6526timer | 6526 compatible timer core | |
| bc6526tod | 6526 compatible time of day clock more | bc6526tod.v |
| DateTime | date / time core more | DateTime.v |
| clk60Hz | generates 50/60Hz clock pulses | clk60Hz.v |