PLE5P8                                        PLE DESIGN SPECIFICATION
P5018                                          PETER WITTFOTH 12/02/83
PERIMETER OF A CIRCLE
MMI MUNICH GmbH
.ADD R0 R1 R2 R3 R4
.DAT P0 P1 P2 P3 P4 P5 P6 P7

P0 =     /R1* R2*/R3*/R4 
   + /R0*/R1* R2*    /R4
   +      R1* R2*     R4
   +      R1*/R2*/R3
   +  R0*/R1*/R2* R3
   + /R0* R1*/R2
   +      R1*/R2*    /R4
   +     /R1*/R2*     R4

P1 =  R0*    /R2*/R3
   + /R0* R1* R2*/R3
   + /R0*    /R2* R3
   +  R0*     R2* R3
   + /R0*     R2*/R3* R4
   +  R0*/R1* R2*    /R4
   +     /R1* R2* R3*/R4
   +  R0* R1*     R3* R4

P2 =  R0*/R1*    /R3*/R4
   +  R0* R1*/R2*/R3* R4
   + /R0* R1* R2* R3* R4
   + /R0* R1*/R2*    /R4
   +      R1* R2*/R3*/R4
   +  R0* R1*     R3*/R4
   + /R0*/R1*/R2*     R4
   +     /R1* R2*/R3* R4
   +  R0*/R1*     R3* R4

P3 = /R0* R1*/R2*    /R4
   +  R0*/R1*/R2* R3
   +  R0*/R1*/R2*     R4
   +  R0*    /R2* R3* R4
   +  R0*     R2*/R3*/R4
   + /R0*     R2* R3*/R4
   +      R1* R2* R3*/R4
   + /R0*     R2*/R3* R4
   +      R1* R2*/R3* R4
   + /R0* R1* R2*     R4
   + /R0*/R1* R2*/R3

P4 =  R0* R1*/R2*/R3
   +      R1*/R2*/R3* R4
   + /R0*/R1* R2*/R3
   +  R0*/R1* R2*    /R4
   +     /R1*/R2* R3
   + /R0* R1*     R3*/R4
   +      R1* R2* R3*/R4
   +     /R1*     R3* R4
   + /R0*     R2* R3* R4

P5 =      R1* R2*/R3*/R4
   +     /R1*/R2* R3*/R4
   +         /R2*/R3* R4
   +      R1*/R2*     R4
   +     /R1* R2* R3* R4
   + /R0* R1*/R2* R3
   + /R0*/R1* R2*     R4
   + /R0*     R2* R3* R4

P6 =  R0* R1*     R3*/R4
   + /R0*/R1*    /R3* R4
   +          R2* R3*/R4
   +         /R2*/R3* R4
   +  R0* R1* R2* R3

P7 =  R0*     R2*     R4
   +      R1* R2*     R4
   +              R3* R4


DESCRIPTION

THIS EXAMPLE ILLUSTRATES HOW TO IMPLEMENT A PERIMETER LOOK UP TABLE IN A
PLE5P8.  THE INPUT PINS, WHICH REPRESENT THE RADIUS OF A CIRCLE, ARE MULTIPLIED
BY 2 TIMES PI IN ORDER TO CALCULATE THE PERIMETER OF A CIRCLE.  A LARGER PLE
CAN BE USED IF GREATER PRECISION IS REQUIRED.

P = 2*pi*R
WHERE pi = 3.1415
AND   R  = THE RADIUS OF A CIRCLE (BETWEEN 0 AND 31)