What are the limits of SIMEEPROM & token?

Maximum number of tokens: 255
Maximum number of elements in an indexed token: 126
Maximum token or element size: 254
Maximum sum total of all token sizes: 2,000 bytes
Average read time of one 26 byte token/element: 240 microseconds
Average write time of one 26 byte token/element: 1.2 milliseconds
Worst-case write time of one token/element: 54 milliseconds
Erase time of one page: 21 milliseconds
Best-case Simulated EEPROM initialization time: 1.4 milliseconds
Worst-case Simulated EEPROM initialization time without repairing: 15 milliseconds
Worst-case Simulated EEPROM initialization time with repairing: 150 milliseconds

The maximum sum total of all tokens is 2000 bytes.  This is detailed in the SimEE App Note.  This limit is enforced at run time, as it can not be checked at compile time.  The assert is line 149 of sim-eeprom.c.  If you see this assert, you have specified too many tokens.

More info about sim EEPROM can be found in the app note "Using the Simulated EEPROM 120-5037"