PAL16C1                                           PAL DESIGN SPECIFICATION
P7030 (PMSI003)                                      BIRKNER/COLI 07/21/81
OCTAL COMPARATOR
MMI SUNNYVALE, CALIFORNIA
A7 A0 B0 A1 B1 A2 B2 A3 B3 GND
A4 B4 A5 B5 EQ NE A6 B6 B7 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


FUNCTION TABLE

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

;INPUT  A  INPUT  B  OUTPUTS
;76543210  76543210   NE EQ    COMMENTS
-------------------------------------------------------------
 HLLLLLLL  LLLLLLLL   H   L    A7=H, B7=L
 LHLLLLLL  LLLLLLLL   H   L    A6=H, B6=L
 LLHLLLLL  LLLLLLLL   H   L    A5=H, B5=L
 LLLHLLLL  LLLLLLLL   H   L    A4=H, A5=L
 LLLLHLLL  LLLLLLLL   H   L    A3=H, B3=L
 LLLLLHLL  LLLLLLLL   H   L    A2=H, B2=L
 LLLLLLHL  LLLLLLLL   H   L    A1=H, B1=L
 LLLLLLLH  LLLLLLLL   H   L    A0=H, B0=L
 LLLLLLLL  HLLLLLLL   H   L    A7=L, B7=H
 LLLLLLLL  LHLLLLLL   H   L    A6=L, B6=H
 LLLLLLLL  LLHLLLLL   H   L    A5=L, B5=H
 LLLLLLLL  LLLHLLLL   H   L    A4=L, B4=H
 LLLLLLLL  LLLLHLLL   H   L    A3=L, B3=H
 LLLLLLLL  LLLLLHLL   H   L    A2=L, B2=H
 LLLLLLLL  LLLLLLHL   H   L    A1=L, B1=H
 LLLLLLLL  LLLLLLLH   H   L    A0=L, B0=H
 LLLLLLLL  LLLLLLLL   L   H    TEST ALL L'S
 HHHHHHHH  HHHHHHHH   L   H    TEST ALL H'S
 HLHLHLHL  HLHLHLHL   L   H    TEST EVEN CHECKERBOARD
 LHLHLHLH  LHLHLHLH   L   H    TEST ODD  CHECKERBOARD
 HHLLHHLL  HHLLHHLL   L   H    TEST EVEN DOUBLE CHECKERBOARD
 LLHHLLHH  LLHHLLHH   L   H    TEST ODD  DOUBLE CHECKERBOARD
-------------------------------------------------------------


DESCRIPTION

THE OCTAL COMPARATOR ESTABLISHES WHEN TWO 8-BIT DATA STRINGS
(A7-A0 AND B7-B0) ARE EQUIVALENT (EQ=H) OR NOT EQUIVALENT (NE=H).