054683

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Equations

/** Inputs **/
Pin	1 = AS;
Pin	2 = WR;
Pin	3 = VSC;
Pin	4 = A23;
Pin	5 = A20;
Pin	6 = A19;
Pin	7 = A18;
Pin	8 = A17;
Pin	9 = A16;
Pin	10 = A15;
Pin	11 = A14;
Pin	13 = A13;

/** Outputs **/
Pin	14 = PROG; 
Pin	15 = WKCS; 
Pin	16 = DTACK; 
Pin	17 = VRAM; 
Pin	18 = OBJCS; 
Pin	19 = OBWR; 
Pin	20 = CRAMCS; 
Pin	21 = COWR; 
Pin	22 = IOCS2; 
Pin	23 = IOCS1; 

/** Equations **/

!PROG = !A20;

!WKCS = !AS & A20 & !A19 & !A18 & !A17 & A16 & !A15 & !A14;

!DTACK = !AS & !VSC & !A23
     # !AS & !A19
     # !AS & !A20;

!VRAM = !AS & !A23 & A20 & A19;

!OBJCS = !AS & A20 & !A19 & !A18 & !A17 & !A16 & !A15 & !A14;

!OBWR = !AS & !WR & A20 & !A19 & !A18 & !A17 & !A16 & !A15 & !A14;

!CRAMCS = !AS & A20 & !A19 & !A18 & !A17 & !A16 & !A15 & A14 & !A13;

!COWR = !AS & !WR & A20 & !A19 & !A18 & !A17 & !A16 & !A15 & A14 & !A13;

!IOCS2 = !AS & A20 & !A19 & !A18 & !A17 & !A16 & A15 & !A14 & A13;

!IOCS1 = !AS & A20 & !A19 & !A18 & !A17 & !A16 & A15 & !A14 & !A13;