# How to read Map-Report in FPGA Synthesis Tools

I have this Map-Report piece product by Lattice Diamond:

...
Number of SLICEs:  9609 out of 33264 (29%)
SLICEs(logic/ROM):  8814 out of 26460 (33%)
SLICEs(logic/ROM/RAM):  795 out of 6804 (12%)
As RAM:  795 out of 6804 (12%)
As Logic/ROM:  0 out of 6804 (0%)
....


I already know what means the first line (Number of SLICEs), but I can't figure out what the rest means; can someone explain precisely the difference between SLICEs(logic/ROM) and SLICEs(logic/ROM/RAM)?