B53-12

Found on...

• Insector X
• The New Zealand Story

Equations

/** Inputs **/
Pin	1 = MA15;
Pin	2 = MA14;
Pin	3 = MMREQ;
Pin	4 = MRFSH;
Pin	5 = MBSWD2;
Pin	6 = MBSWD1;
Pin	7 = MBSWD0;
Pin	8 = OBJCODELO;
Pin	9 = OBJCODEHI;
Pin	11 = H4B;

/** Outputs **/
Pin	12 = MRA16; /**(Combinatorial, Output feedback output, Active high) **/
Pin	13 = MRA15; /**(Combinatorial, Output feedback output, Active high) **/
Pin	14 = MRA14; /**(Combinatorial, Output feedback output, Active low) **/
Pin	15 = MROMCS; /**(Combinatorial, No output feedback, Active low) **/
Pin	16 = MRAMCS; /**(Combinatorial, No output feedback, Active low) **/
Pin	17 = NC17; /**(Combinatorial, Output feedback output, Active high) **/
Pin	18 = NC18; /**(Combinatorial, Output feedback output, Active high) **/
Pin	19 = OBJRAMCS; /**(Combinatorial, Output feedback output, Active high) **/

/** Equations **/

MRA16 = MA15 & MBSWD2;

MRA15 = MA15 & MBSWD1;

!MRA14 = MA15 & !MBSWD0
     # !MA15 & !MA14;

!MROMCS = !MA15 & MA14 & !MMREQ & MRFSH & !MBSWD2 & MBSWD1
     # !MA14 & !MMREQ & MRFSH & !MBSWD2 & MBSWD1
     # !MA15 & MA14 & !MMREQ & MRFSH & MBSWD2
     # !MA15 & !MMREQ & MRFSH & !MBSWD1
     # !MA14 & !MMREQ & MRFSH & MBSWD2;

!MRAMCS = MA15 & !MA14 & !MMREQ & MRFSH & !MBSWD2 & !MBSWD1;

NC17 = OBJCODELO & !H4B;

NC18 = OBJCODEHI & !H4B;

OBJRAMCS = OBJCODELO & OBJCODEHI & !H4B;