PAL16L8                                               PAL DESIGN SPECIFICATION
P7037                                                   BRAD MITCHELL 04/07/81
DICE DECODER
MMI FIELD APPLICATIONS ENGINEER DALLAS, TEXAS
NC NC /Q0 /Q1 /Q2 /Q3 /Q4 /Q5 NC GND
NC NC /NC1S /NC2S /NC4S /1S /2S /4S /8S VCC


IF(VCC)   1S = /Q0* Q1    */Q3* Q4*/Q5     ;THE MINIUM LOGIC REQUIRED
             + /Q0    */Q2*/Q3*/Q4* Q5     ;TO DECODE THE 1S BIT WAS DERIVED
             + /Q0* Q1* Q2*/Q3    */Q5     ;FROM THE KARNAUGH MAP
             +  Q0*/Q1* Q2* Q3    */Q5
             + /Q0    */Q2* Q3*/Q4*/Q5
             +  Q0    * Q2* Q3*/Q4*/Q5
             +  NC1S

IF(VCC) NC1S =  Q0    */Q2*/Q3*/Q4*/Q5     ;NC1S IS USED AS ADDITIONAL DECODE
             +  Q0*/Q1    */Q3*/Q4*/Q5     ;FOR 1S
             + /Q0    * Q2*/Q3* Q4*/Q5
             +  Q0*/Q1*/Q2    * Q4*/Q5
             +  Q0    */Q2* Q3* Q4*/Q5
             + /Q0* Q1* Q2    * Q4*/Q5

IF(VCC)   2S = /Q0* Q1*/Q2*/Q3*/Q4* Q5     ;FROM KARNAUGH MAP
             +  Q0*/Q1*/Q2*/Q3*/Q4
             +  Q0*/Q1*/Q2    */Q4*/Q5
             +      Q1* Q2* Q3*/Q4*/Q5
             + /Q0* Q1    * Q3*/Q4*/Q5
             + /Q0* Q1* Q2    */Q4*/Q5
             +  NC2S

IF(VCC) NC2S =  Q0* Q1    */Q3* Q4*/Q5     ;NC2S IS USED AS ADDITIONAL DECODE
             + /Q0*/Q1* Q2    * Q4*/Q5     ;FOR 2S
             + /Q0    * Q2* Q3* Q4*/Q5
             +     /Q1    */Q3*/Q4*/Q5
             +     /Q1    * Q3* Q4*/Q5

IF(VCC)   4S =  Q0* Q1*/Q2*/Q3*/Q4         ;FROM KARNAUGH MAP
             + /Q0*/Q1* Q2*/Q3    */Q5
             + /Q0* Q1* Q2* Q3    */Q5
             +     /Q1*/Q2* Q3    */Q5
             +      Q1*/Q2*/Q3    */Q5
             + /Q0        * Q3*/Q4*/Q5
             +  NC4S

IF(VCC) NC4S =          Q2* Q3*/Q4*/Q5     ;NC4S IS USED AS ADDITIONAL DECODE
             +  Q0    * Q2    */Q4*/Q5     ;FOR 4S

IF(VCC)   8S =  Q0* Q1*/Q2* Q3    */Q5     ;FROM KARNAUGH MAP
             +     /Q1*/Q2*/Q3* Q4*/Q5
             +      Q1*/Q2* Q3* Q4*/Q5
             +      Q1* Q2*/Q3* Q4*/Q5
             +     /Q1* Q2* Q3* Q4*/Q5
             +  Q0    * Q2    * Q4*/Q5
             +         /Q2*/Q3*/Q4* Q5


FUNCTION TABLE

Q5 Q4 Q3 Q2 Q1 Q0 NC4S NC2S NC1S 8S 4S 2S 1S

;   INPUTS              OUTPUTS
;Q Q Q Q Q Q  N N N     8 4 2 1
;5 4 3 2 1 0  C C C     S S S S
;             4 2 1                  COMMENTS
;             S S S                 (DICE ROLL)
------------------------------------------------
 L L L L L L  L H L     L L H L          2
 L L L L L H  L H H     L L H H          3
 L L L L H L  L L L     L H L L          4
 L L L L H H  L L H     L H L H          5
 L L L H L L  L H L     L H H L          6
 L L L H L H  H H H     L H H H          7
 L L L H H L  L L L     L L H H          3
 L L L H H H  H L L     L H L L          4
 L L H L L L  L L L     L H L H          5
 L L H L L H  L L L     L H H L          6
 L L H L H L  L L L     L H H H          7
 L L H L H H  L L L     H L L L          8
 L L H H L L  H L L     L H L L          4
 L L H H L H  H L L     L H L H          5
 L L H H H L  H L L     L H H L          6
 L L H H H H  H L L     L H H H          7
 L H L L L L  L L L     H L L L          8
 L H L L L H  L L H     H L L H          9
 L H L L H L  L L L     L H L H          5
 L H L L H H  L H L     L H H L          6
 L H L H L L  L H H     L H H H          7
 L H L H L H  L L L     H L L L          8
 L H L H H L  L L H     H L L H          9
 L H L H H H  L H L     H L H L         10
 L H H L L L  L H L     L H H L          6
 L H H L L H  L H H     L H H H          7
 L H H L H L  L L L     H L L L          8
 L H H L H H  L L H     H L L H          9
 L H H H L L  L H L     H L H L         10
 L H H H L H  L H L     H L H H         11
 L H H H H L  L H H     L H H H          7
 L H H H H H  L L L     H L L L          8
 H L L L L L  L L L     H L L H          9
 H L L L L H  L L L     H L H L         10
 H L L L H L  L L L     H L H H         11
 H L L L H H  L L L     H H L L         12
------------------------------------------------


DESCRIPTION

THIS PAL DECODES THE 36 STATE MACHINE INTO A BINARY REPRESENTATION OF THE
ROLL OF THE DICE (2 THRU 12).  THERE ARE 36 POSSIBLE COMBINATIONS FOR THE
TWO DICE.  THE NUMBERS ARE DECODED SO THAT THE PROPER ODDS ARE MAINTAINED
FOR THE ROLL OF EACH NUMBER.