CCU v2.00 CF30288 pinout

           .---v---.
 CPU M2 -> |01   28| ??
 CPU D4 -> |02   27| ??
 CPU D3 -> |03   26| ??
 CPU D2 -> |04   25| ??
 CPU D1 -> |05   24| -> ROM /OE
 CPU D0 -> |06   23| ??
    VCC -- |07   22| -- GND
 CPU A0 -> |08   21| -> CIC STUN
CPU A13 -> |09   20| -> $C000.3 OR CPU A14
CPU A14 -> |10   19| -> $8000.3
/ROMSEL -> |11   18| -> $C000.2 OR CPU A14
CPU R/W -> |12   17| -> $8000.4
        ?? |13   16| -> $C000.1 OR CPU A14
        ?? |14   15| -> $C000.0 OR CPU A14
           '-------'
        28-pin 0.4" shrink DIP

Notes:

• This chip is used in Aladdin Deck Enhancer 1.1/2.0 and Super Sports Challenge
• CIC STUN pin is used only in Aladdin Deck Enhancer 1.1

• Source: [1]