Mapper 2: UNROM

Max PRG banks16
Max CHR banks1
BankswitchingPRG

Notes:

The first 16k of the PRG is loaded in at $8000 and the last 16k is "hardwired" into $C000 When the NES is first turned on or reseted. ("hardwired" means that the last 16k, from $C000-$FFFF, can't be swapped.) A bank switch occurs when memory is written to anywhere in $8000-$FFFF. When a bank switch occurs, it loads the 16k of the specified bank (based on the value of the memory write) and places it into the PRG at $8000.