Batman Forever (SEGA STV)

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PCB

PLD

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Unlocked GAL16V8 U2 350-GAL-A1 Tested Coolmod Coolmod JEDEC

Equations

/** Inputs **/
Pin	1 = i1;
Pin	2 = i2;
Pin	3 = i3;
Pin	4 = i4;
Pin	5 = i5;
Pin	6 = i6;
Pin	7 = i7;
Pin	8 = i8;
Pin	9 = i9;
Pin	11 = i11;

/** Outputs **/
Pin	12 = o12; /**(Combinatorial, No output feedback, Active high) **/
Pin	13 = o13; /**(Combinatorial, Output feedback output, Active low) **/
Pin	14 = o14; /**(Combinatorial, Output feedback output, Active high) **/
Pin	15 = o15; /**(Combinatorial, Output feedback output, Active low) **/
Pin	16 = o16; /**(Combinatorial, Output feedback output, Active low) **/
Pin	17 = o17; /**(Combinatorial, Output feedback output, Active low) **/
Pin	18 = o18; /**(Combinatorial, Output feedback output, Active low) **/
Pin	19 = o19; /**(Combinatorial, No output feedback, Active high) **/

/** Equations **/

o12 = i5;
o12.oe = !i3 & !i7 & i8;

!o13 = !i7 & !o13
     # !i2 & !i3 & !i7 & !i8;

o14 = i6 & i7;

!o15 = !i3 & !i6 & i9 & !i11;

!o16 = !i3 & !i6 & !i9 & !i11;

!o17 = !o14
     # i1 & !o17;

!o18 = !i7 & !o18
     # !i2 & i3 & !i7 & !i8;

o19 = i4;
o19.oe = !i3 & !i7 & i8;

Credits

  • PCB picture from Phil Bennett