NB1-2

Found on...

• Nebulus Ray
• Point Blank

History

• 03/08/2025 - Added Nebulus Ray equations equations

Notes

Note from MAME source:
World set using non standard ROM labels (NR is Namco's prefix for Nebulas Ray, but NOT here!!), verified on 2 separate PCBs

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

/** Equations **/

!o12 = !i2 & i6 & !i7;

!o13 = !i2 & !i5;

!o14 = !i2 & !i4;

!o15 = !i2 & !i6 & i8 & !i9
     # !i2 & !i6 & i7
     # !i2 & !i6 & !i8 & i9;

!o16 = !i2 & !i6 & !i7 & !i8 & !i9 & i11;

o17 = !i6 & !i7 & i8
    # i7 & i9
    # i6 & i9;

o18 = i8 & i9
    # i6 & i8
    # i7 & i8;

!o19 = i1 & !i2 & !i6 & i8 & !i9
     # i1 & !i2 & !i6 & i7
     # i1 & !i2 & !i6 & !i8 & i9;