02-25
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edit/**********************************************************************/
/*Super Off Road Track Pak U85 (02-25 and 02-27) */
/*control signals for master video data latches */
/*also used for security */
/**********************************************************************/
/** 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;
PIN 13 = o13;
PIN 14 = o14;
PIN 15 = o15;
PIN 16 = o16;
PIN 17 = o17;
PIN 18 = o18;
PIN 19 = o19;
/** Logic Equations **/
/* toggle latch with reset */
/* toggle on falling edge of o13, reset when i11 is low */
/* o18 and o13 are state (o13 is toggle output) */
o18 = !o13 & o14 & i11 #
o18 & !o14 & i11;
o13 = o13 & o14 & i11 #
o18 & !o14 & i11;
o12 = !i9 # i5 # !i4 # i2 # i1 # o18 & i11 & i8;
o14 = !i9 # !i8 # i5 # !i4 # i1 # i3 & i2;
o15 = !i8 # i5 # !i4 # i2 # i1 # !o18 & i9 # !i11 & i9;
o16 = !i9 # i5 # !i4 # i3 # i1 # o18 & i11 & i8;
o17 = !i8 # i5 # !i4 # i3 # i1 # !o18 & i9 # !i11 & i9;
o19 = !i5 # i4 # i1 # i6 & i3 # !i6 & i2;