Namcot 108 family pinout

Namcot 108, Namcot 109, Namcot 118, Namcot 119: 28-pin shrink PDIP (Canonically mapper 206).

               .--\/--.
(n) PRG A14 -> |01  28| -> PRG A15 (r)
 (s) PRG A0 -> |02  27| -> PRG A14 (r)
 (s) PRG D5 -> |03  26| <- M2 (n)      
 (s) PRG D0 -> |04  25| -> PRG A13 (r)
 (s) PRG D4 -> |05  24| <- PRG A13 (n)
 (s) PRG D1 -> |06  23| -> PRG A16 (r)
        Gnd -- |07  22| -> PRG /CE (r)
 (s) PRG D3 -> |08  21| -- +5V
 (s) PRG D2 -> |09  20| -> CHR A13 (r)
(n) /PRGSEL -> |10  19| -> CHR A11 (r)
    (n) R/W -> |11  18| -> CHR A10 (r)
(r) CHR A15 <- |12  17| <- CHR A10 (n)
(r) CHR A14 <- |13  16| <- CHR A11 (n)
(r) CHR A12 <- |14  15| <- CHR A12 (n)
               `------'

No behavioral differences are known between the 4 different part numbers; several games were released on the same board with identical code and different mapper ICs.

Many boards (and thus iNES mappers) redefined parts of the pinout for various extensions, mostly to increase the amount of addressable CHR ROM.

Mapper 76:

 (s) PRG D2 -> |09  20| -> CHR A14 (r)
(n) /PRGSEL -> |10  19| -> CHR A12 (r)
    (n) R/W -> |11  18| -> CHR A11 (r)
(r) CHR A16 <- |12  17| <- CHR A11 (n)
(r) CHR A15 <- |13  16| <- CHR A12 (n)
(r) CHR A13 <- |14  15| <- +5V
               `------'

      (n) CHR A10 -> CHR A10 (r)

Mappers 88 and 154 connect (n) CHR A12 -> CHR A16 (r), skipping the mapper IC altogether.

Mapper 95:

(n) CIRAM A10 <- |12  17| <- CHR A10 (n)
  (r) CHR A14 <- |13  16| <- CHR A11 (n)
  (r) CHR A12 <- |14  15| <- CHR A12 (n)
                 `------'