PAL20C1                                           PAL DESIGN SPECIFICATION
P7064 (SN54/74LS460)                                 VINCENT COLI 04/20/82
10-BIT COMPARATOR
MMI SUNNYVALE, CALIFORNIA
A0 B0 A1 B1 A2 B2 A3 B3 A4 B4 A5 GND
B5 A6 B6 A7 B7 EQ NE A8 B8 A9 B9 VCC


NE =  A0*/B0  +  /A0* B0     ;A0 :+: B0
   +  A1*/B1  +  /A1* B1     ;A1 :+: B1
   +  A2*/B2  +  /A2* B2     ;A2 :+: B2
   +  A3*/B3  +  /A3* B3     ;A3 :+: B3
   +  A4*/B4  +  /A4* B4     ;A4 :+: B4
   +  A5*/B5  +  /A5* B5     ;A5 :+: B5
   +  A6*/B6  +  /A6* B6     ;A6 :+: B6
   +  A7*/B7  +  /A7* B7     ;A7 :+: B7
   +  A8*/B8  +  /A8* B8     ;A8 :+: B8
   +  A9*/B9  +  /A9* B9     ;A9 :+: B9

EQ = /NE                     ;EQ IS NOT NE


FUNCTION TABLE

A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 NE EQ

; INPUT  A    INPUT  B   OUTPUTS
;9876543210  9876543210   NE EQ    COMMENTS
-----------------------------------------------------------------
 HLLLLLLLLL  LLLLLLLLLL   H   L    A9=H, B9=L
 LHLLLLLLLL  LLLLLLLLLL   H   L    A8=H, B8=L
 LLHLLLLLLL  LLLLLLLLLL   H   L    A7=H, B7=L
 LLLHLLLLLL  LLLLLLLLLL   H   L    A6=H, B6=L
 LLLLHLLLLL  LLLLLLLLLL   H   L    A5=H, B5=L
 LLLLLHLLLL  LLLLLLLLLL   H   L    A4=H, A5=L
 LLLLLLHLLL  LLLLLLLLLL   H   L    A3=H, B3=L
 LLLLLLLHLL  LLLLLLLLLL   H   L    A2=H, B2=L
 LLLLLLLLHL  LLLLLLLLLL   H   L    A1=H, B1=L
 LLLLLLLLLH  LLLLLLLLLL   H   L    A0=H, B0=L
 LLLLLLLLLL  HLLLLLLLLL   H   L    A9=L, B9=H
 LLLLLLLLLL  LHLLLLLLLL   H   L    A8=L, B8=H
 LLLLLLLLLL  LLHLLLLLLL   H   L    A7=L, B7=H
 LLLLLLLLLL  LLLHLLLLLL   H   L    A6=L, B6=H
 LLLLLLLLLL  LLLLHLLLLL   H   L    A5=L, B5=H
 LLLLLLLLLL  LLLLLHLLLL   H   L    A4=L, B4=H
 LLLLLLLLLL  LLLLLLHLLL   H   L    A3=L, B3=H
 LLLLLLLLLL  LLLLLLLHLL   H   L    A2=L, B2=H
 LLLLLLLLLL  LLLLLLLLHL   H   L    A1=L, B1=H
 LLLLLLLLLL  LLLLLLLLLH   H   L    A0=L, B0=H
 LLLLLLLLLL  LLLLLLLLLL   L   H    TEST ALL L'S
 HHHHHHHHHH  HHHHHHHHHH   L   H    TEST ALL H'S
 HLHLHLHLHL  HLHLHLHLHL   L   H    TEST EVEN CHECKERBOARD
 LHLHLHLHLH  LHLHLHLHLH   L   H    TEST ODD  CHECKERBOARD
 LLHHLLHHLL  LLHHLLHHLL   L   H    TEST EVEN DOUBLE CHECKERBOARD
 HHLLHHLLHH  HHLLHHLLHH   L   H    TEST ODD  DOUBLE CHECKERBOARD
-----------------------------------------------------------------

DESCRIPTION

THE 10-BIT COMPARATOR ESTABLISHES WHEN TWO 10-BIT DATA STRINGS
(A9-B0 AND B9-B0) ARE EQUIVALENT (EQ=H) OR NOT EQUIVALENT (NE=H).