Code:
PRG: 512 kB + 128 kB
CHR: 512 kB + 512 kB
Mapper chip takes into account: !ROMSEL/M2/CPU-A14/A13/A12/A1/A0 & CPU-D0/D1/D2/D3/D4/
Each reset of console switches betwen PRG/CHR pair.
Mapper pinout attached in schematic - pinout differs from mapper 90 glob.