(r) this line goes to the ROM only.
(s) this line is Shared between the ROM, MMC/chip, and Nintendo
(n) this line connects to the NES cart edge only, and not the ROM
(w) this line connects to the WRAM only and nowhere else


MMC2 Chip:   (40/42 pin shrink-DIP) [Made by Kevin Horton ([email protected])]
----------
Comes in one flavour: 'MMC2   RD387-001'

                                 .----\/----.
                                 |          |
                           GND - |XX      XX| - +5V
                            M2 - |01      40| - +5V
                   PRG A14 (n) - |02      39| - GND
                   PRG A13 (n) - |03      38| - CIRAM A10 (n)
                   PRG A15 (r) - |04      37| - CHR A15 (r)
                   PRG A14 (r) - |05      36| - CHR A12 (r)
                   PRG A12 (s) - |06      35| - CHR A14 (r)
                   PRG A13 (r) - |07      34| - CHR A12 (n)
                   PRG A16 (r) - |08      33| - CHR A13 (r)
                   PRG /CE (r) - |09      32| - CHR A16 (r)
                    PRG D4 (s) - |10      31| - CHR A8 (s)
                    PRG D3 (s) - |11      30| - CHR A5 (s)
                    PRG D0 (s) - |12      29| - CHR A9 (s)
                    PRG D1 (s) - |13      28| - CHR A4 (s)
                    PRG D2 (s) - |14      27| - CHR A11 (s)
                   PRG R/W (n) - |15      26| - CHR A3 (s)
                   PRG /CE (n) - |16      25| - CHR A7 (s)
                   CHR /RD (s) - |17      24| - CHR A2 (s)
                    CHR A0 (s) - |18      23| - CHR A10 (s)
                    CHR A6 (s) - |19      22| - CHR A1 (s)
                           GND - |20      21| - CHR /CE (s)
                                 |          |
                                 `----------'

                                     MMC2


(note: the pins marked with 'X's are optional; they are only used if
the MMC2 were to be 42 pins instead of 40.)

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