Those infos are from bsnes source code (there's only differences from Original Mapping) :
$00-$1F $8000-$FFFF : ROM/PSRAM/Data Pack
$80-$9F $8000-$FFFF : ROM/PSRAM/Data Pack
$00-$0F $5000 : MMIO
$10-$17 $5000-$5FFF : SRAM
$20-$3F $6000-$7FFF : PSRAM (From offset $6000 of PSRAM) (Direct Access)
$40-$7D $0000-$FFFF : Memory Pack [HiROM mode]
$40-$4F $0000-$FFFF : PSRAM (Direct Access) [Depends of MMIO]
$50-$5F $0000-$FFFF : PSRAM (Direct Access) [Depends of MMIO]
$60-$6F $0000-$FFFF : PSRAM (Direct Access) [Depends of MMIO]
$C0-$FF $0000-$FFFF : Memory Pack (Up to 32M !)