Konami QT adapter pinout
+—–+
GND – |01 21| – VCC
CPU A6 -> |02 22| <- CPU A8
CPU A11 -> |03 23| <- CPU A9
CPU A4 -> |04 24| <- CPU A5
CPU A3 -> |05 25| <- CPU A10
CPU A2 -> |06 26| <> CPU D7
CPU A12 -> |07 27| <- CPU A7
CPU D6 <> |08 28| <- CPU R/W
CPU D5 <> |09 29| <- CPU A1
CPU D4 <> |10 30| <- CPU A0
GND – |11 31| – GND
CPU D3 <> |12 32| <> CPU D0
CPU D2 <> |13 33| <> CPU D1
PRG A13 -> |14 34| <- PRG A14
PRG A15 -> |15 35| <- PRG A16
EXT PRG ROM0 /CE -> |16 36| <- PRG A17
EXT PRG ROM1 /CE -> |17 37| <- EXT PRG ROM2 /CE
? |18 38| <- PRG RAM A12
EXT PRG RAM /CE – |19 39| ?
VCC – |20 40| – VCC
+—–+
Notes:
- Pins 1-20 are on label side
Source: