PAL20X10                                      PAL DESIGN SPECIFICATION
P7061                                            VINCENT COLI 11/27/81
10-BIT REGISTER
MMI SUNNYVALE, CALIFORNIA
CLK D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 GND
/OC Q9 Q8 Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0 VCC

/Q0 := /D0      ;LOAD D0

/Q1 := /D1      ;LOAD D1

/Q2 := /D2      ;LOAD D2

/Q3 := /D3      ;LOAD D3

/Q4 := /D4      ;LOAD D4

/Q5 := /D5      ;LOAD D5

/Q6 := /D6      ;LOAD D6

/Q7 := /D7      ;LOAD D7

/Q8 := /D8      ;LOAD D8

/Q9 := /D9      ;LOAD D9

FUNCTION TABLE

/OC CLK D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Q9 Q8 Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0

;           DATA IN      DATA OUT
;CONTROL   DDDDDDDDDD   QQQQQQQQQQ
;/OC CLK   9876543210   9876543210      COMMENT
---------------------------------------------------------------
  L   C    LLLLLLLLLL   LLLLLLLLLL      LOAD ALL ZEROS
  L   L    XXXXXXXXXX   LLLLLLLLLL      HOLD ALL ZEROS
  L   C    HHHHHHHHHH   HHHHHHHHHH      LOAD ALL ONES
  L   L    XXXXXXXXXX   HHHHHHHHHH      HOLD ALL ONES
  L   C    HLHLHLHLHL   HLHLHLHLHL      LOAD EVEN CHECKERBOARD
  L   L    XXXXXXXXXX   HLHLHLHLHL      HOLD EVEN CHECKERBOARD
  L   C    LHLHLHLHLH   LHLHLHLHLH      LOAD ODD  CHECKERBOARD
  L   L    XXXXXXXXXX   LHLHLHLHLH      HOLD ODD  CHECKERBOARD
  H   X    XXXXXXXXXX   ZZZZZZZZZZ      TEST HI-Z
---------------------------------------------------------------

DESCRIPTION

THIS 10-BIT REGISTER LOADS THE DATA (D9-D0) ON THE RISING EDGE OF THE
CLOCK (CLK) INTO THE REGISTER (Q9-Q0).  THE DATA IS HELD IN THE REGISTER
UNTIL THE NEXT POSITIVE EDGE OF THE CLOCK.

OPERATIONS TABLE:

      /OC  CLK  D9-D0  Q9-Q0    OPERATION
      ------------------------------------
       H    X     X      Z      HI-Z
       L    C     D      D      LOAD
       L    L     X      Q      HOLD
      ------------------------------------