TC-1

Found on...

Crude Buster

Equations

/** Inputs **/
Pin	1 = A17;
Pin	2 = A18;
Pin	3 = A19;
Pin	4 = LDS;
Pin	5 = UDS;
Pin	6 = RW;
Pin	7 = AS;

/** Outputs **/
Pin	12 = PAL_TC2; /**(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 = RAM_EN; /**(Combinatorial, Output feedback output, Active low) **/
Pin	16 = ROM4_CS; /**(Combinatorial, Output feedback output, Active low) **/
Pin	17 = ROM1_CS; /**(Combinatorial, Output feedback output, Active low) **/
Pin	18 = ROM3_CS; /**(Combinatorial, Output feedback output, Active low) **/
Pin	19 = ROM0_CS; /**(Combinatorial, Output feedback output, Active low) **/

/** Equations **/

!PAL_TC2 = A17 & !A18 & A19 & !AS	//$A0000 - $BFFFF
         # !A17 & A18 & A19 & !AS;	//$C0000 - $DFFFF

!o13 = A19 & !UDS;				    //$80000 - $FFFFF

!o14 = A19 & !LDS;				    //$80000 - $FFFFF

!RAM_EN = !A17 & !A18 & A19;		//$80000 - $9FFFF

!ROM4_CS = A18 & !A19 & !UDS & RW;	//$40000 - $7FFFF (READ)

!ROM1_CS = !A18 & !A19 & !UDS & RW;	//$0 - $30000 (READ)

!ROM3_CS = A18 & !A19 & !LDS & RW;	//$40000 - $7FFFF (READ)

!ROM0_CS = !A18 & !A19 & !LDS & RW;	//$0 - $30000 (READ)