Camerica BF909x pinout

                  .--v--.                   |                   .--v--.                   |                   .--v--.
           +5V -- |01 20| <- CPU A14        |            +5V -- |01 20| <- CPU A14        |            +5V -- |01 20| <- CPU A14    
       CPU R/W -> |02 19| <- CPU A13        |        CPU R/W -> |02 19| <- CPU A13        |        CPU R/W -> |02 19| <- CPU A13
       PRG /CE <- |03 18| -> $C000.1 OR A14 |        PRG /CE <- |03 18| -> $C000.1 OR A14 |        PRG /CE <- |03 18| -> $C000.1 OR A14 
$C000.0 OR A14 <- |04 17| -> $C000.2 OR A14 | $C000.0 OR A14 <- |04 17| -> $8000.4        | $C000.0 OR A14 <- |04 17| -> $8000.4  
            M2 -> |05 16| <- ??             |             M2 -> |05 16| <- ??             |             M2 -> |05 16| -> $C000.2 OR A14 
        CPU A0 -> |06 15| <- CPU /ROMSEL    |         CPU A0 -> |06 15| <- CPU /ROMSEL    |         CPU A0 -> |06 15| <- ?? 
        CPU D0 -> |07 14| -> $C000.3 OR A14 |         CPU D0 -> |07 14| -> $8000.3        |         CPU D0 -> |07 14| <- CPU /ROMSEL
        CPU D1 -> |08 13| -> CIC stun       |         CPU D1 -> |08 13| -> CIC stun       |         CPU D1 -> |08 13| -> CIC stun               
        CPU D2 -> |09 12| <- CPU D4         |         CPU D2 -> |09 12| <- CPU D4         |         CPU D2 -> |09 12| <- CPU D4
           GND -- |10 11| <- CPU D3         |            GND -- |10 11| <- CPU D3         |            GND -- |10 11| <- CPU D3
                  '-----'                   |                   '-----'                   |                   '-----'
                  BF9093                    |                   BF9096                    |                   BF9097

       $C000.3 OR CPU A14 = PRG A17         |        $8000.3            = PRG A17         |       $8000.4            = CIRAM A10 in Firehawk
       $C000.2 OR CPU A14 = PRG A16         |        $8000.4            = PRG A16         |       $C000.2 OR CPU A14 = PRG A16 
       $C000.1 OR CPU A14 = PRG A15         |        $C000.1 OR CPU A14 = PRG A15         |       $C000.1 OR CPU A14 = PRG A15
       $C000.0 OR CPU A14 = PRG A14         |        $C000.0 OR CPU A14 = PRG A14         |       $C000.0 OR CPU A14 = PRG A14

Notes:

• All chips are 20-pin 0.3" PDIP
• Register $8000 is at $8000-$BFFF
• Register $C000 is at $C000-$FFFF
• ?? is unknown input, tied to GND in all cartridges
• BF9093 is used in 64 kB / 128 kB / 256 kB NES & 256 kB Famicom singles (iNES Mapper 071 submapper 0)
• BF9096 is used in NES/Famicom Quattro multicarts (iNES Mapper 232)
• BF9097 is used in Firehawk (iNES Mapper 071 submapper 1) and in 64 kB Famicom singles (pins 17, 16 are not wired here)
• CIC stun latches inverse of CPU A0 when writing at $E000-$FFFF
• Pinout from Kevtris is not accurate

Source: [1]