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- PAL20X8 PAL DESIGN SPECIFICATION
- 74LS380 BIRKNER/KAZMI/BLASCO 02/16/81
- MULTIFUNCTION OCTAL REGISTER
- MMI SUNNYVALE, CALIFORNIA
- CLK /LD D0 D1 D2 D3 D4 D5 D6 D7 POL GND
- /OC /PR Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0 /CLR VCC
- ;pinlist 1 to 24 must start in line 5
-
- ;equations go here
-
- /Q0 := CLR ;CLEAR
- + /CLR*/PR*/LD*/Q0 ;HOLD
- :+: /CLR*/PR* LD* POL*/D0 ;LOAD D0 (TRUE)
- + /CLR*/PR* LD*/POL* D0 ;LOAD /D0 (COMP)
-
- /Q1 := CLR ;CLEAR
- + /CLR*/PR*/LD*/Q1 ;HOLD
- :+: /CLR*/PR* LD* POL*/D1 ;LOAD D1 (TRUE)
- + /CLR*/PR* LD*/POL* D1 ;LOAD /D1 (COMP)
-
- /Q2 := CLR ;CLEAR
- + /CLR*/PR*/LD*/Q2 ;HOLD
- :+: /CLR*/PR* LD* POL*/D2 ;LOAD D2 (TRUE)
- + /CLR*/PR* LD*/POL* D2 ;LOAD /D2 (COMP)
-
- /Q3 := CLR ;CLEAR
- + /CLR*/PR*/LD*/Q3 ;HOLD
- :+: /CLR*/PR* LD* POL*/D3 ;LOAD D3 (TRUE)
- + /CLR*/PR* LD*/POL* D3 ;LOAD /D3 (COMP)
-
- /Q4 := CLR ;CLEAR
- + /CLR*/PR*/LD*/Q4 ;HOLD
- :+: /CLR*/PR* LD* POL*/D4 ;LOAD D4 (TRUE)
- + /CLR*/PR* LD*/POL* D4 ;LOAD /D4 (COMP)
-
- /Q5 := CLR ;CLEAR
- + /CLR*/PR*/LD*/Q5 ;HOLD
- :+: /CLR*/PR* LD* POL*/D5 ;LOAD D5 (TRUE)
- + /CLR*/PR* LD*/POL* D5 ;LOAD /D5 (COMP)
-
- /Q6 := CLR ;CLEAR
- + /CLR*/PR*/LD*/Q6 ;HOLD
- :+: /CLR*/PR* LD* POL*/D6 ;LOAD D6 (TRUE)
- + /CLR*/PR* LD*/POL* D6 ;LOAD /D6 (COMP)
-
- /Q7 := CLR ;CLEAR
- + /CLR*/PR*/LD*/Q7 ;HOLD
- :+: /CLR*/PR* LD* POL*/D7 ;LOAD D7 (TRUE)
- + /CLR*/PR* LD*/POL* D7 ;LOAD /D7 (COMP)
-
- ; function table vectors go here
-
- FUNCTION TABLE
-
- D7 D6 D5 D4 D3 D2 D1 D0 /CLR /PR /LD POL CLK /OC Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0
-
- ;function table pin list
- ; INPUTS CONTROL OUTPUTS COMMENTS
- ; D7----D0 /CLR /PR /LD POL CLK /OC Q7----Q0
- -------------------------------------------------------------------------
- ;CLEAR AND PRESET TESTS
- HHHHHHHH L L L H C L LLLLLLLL CLEAR
- LLLLLLLL H L L H C L HHHHHHHH PRESET
- LLLLLLLL L L L L C L LLLLLLLL CLEAR
- HHHHHHHH H L L L C L HHHHHHHH PRESET
- ;LOAD DATA - WALKING ZEROS (TRUE DATA)
- HHHHHHHL H H L H C L HHHHHHHL LOAD HEX (FE)
- HHHHHHLH H H L H C L HHHHHHLH LOAD HEX (FD)
- HHHHHLHH H H L H C L HHHHHLHH LOAD HEX (FB)
- HHHHLHHH H H L H C L HHHHLHHH LOAD HEX (F7)
- HHHLHHHH H H L H C L HHHLHHHH LOAD HEX (EF)
- HHLHHHHH H H L H C L HHLHHHHH LOAD HEX (DF)
- HLHHHHHH H H L H C L HLHHHHHH LOAD HEX (BF)
- LHHHHHHH H H L H C L LHHHHHHH LOAD HEX (7F)
- HHHHHHHH H H L H C L HHHHHHHH LOAD HEX (FF)
- ;LOAD DATA - WALKING ONES (TRUE DATA)
- LLLLLLLH H H L H C L LLLLLLLH LOAD HEX (01)
- LLLLLLHL H H L H C L LLLLLLHL LOAD HEX (02)
- LLLLLHLL H H L H C L LLLLLHLL LOAD HEX (04)
- LLLLHLLL H H L H C L LLLLHLLL LOAD HEX (08)
- LLLHLLLL H H L H C L LLLHLLLL LOAD HEX (10)
- LLHLLLLL H H L H C L LLHLLLLL LOAD HEX (20)
- LHLLLLLL H H L H C L LHLLLLLL LOAD HEX (40)
- HLLLLLLL H H L H C L HLLLLLLL LOAD HEX (80)
- LLLLLLLL H H L H C L LLLLLLLL LOAD HEX (00)
- ;LOAD DATA - WALKING ONES (COMP DATA) WITH HOLD TESTS
- LLLLLLLL H H H L C L LLLLLLLL HOLD
- LLLLLLLL H H L L C L HHHHHHHH LOAD HEX (00)
- LLLLLLLL H H H H C L HHHHHHHH HOLD
- LLLLLLLH H H L L C L HHHHHHHL LOAD HEX (01)
- LLLLLLLL H H H L C L HHHHHHHL HOLD
- LLLLLLHL H H L L C L HHHHHHLH LOAD HEX (02)
- HHHHHHHH H H H H C L HHHHHHLH HOLD
- LLLLLHLL H H L L C L HHHHHLHH LOAD HEX (03)
- LLLLLLLL H H H L C L HHHHHLHH HOLD
- LLLLHLLL H H L L C L HHHHLHHH LOAD HEX (80)
- HHHHHHHH H H H H C L HHHHLHHH HOLD
- LLLHLLLL H H L L C L HHHLHHHH LOAD HEX (10)
- LLLLLLLL H H H L C L HHHLHHHH HOLD
- LLHLLLLL H H L L C L HHLHHHHH LOAD HEX (20)
- HHHHHHHH H H H H C L HHLHHHHH HOLD
- LHLLLLLL H H L L C L HLHHHHHH LOAD HEX (40)
- LLLLLLLL H H H L C L HLHHHHHH HOLD
- HLLLLLLL H H L L C L LHHHHHHH LOAD HEX (80)
- HHHHHHHH H H H H C L LHHHHHHH HOLD
- LLLLLLLL H H L L C L HHHHHHHH LOAD HEX (00)
- XXXXXXXX X X X X X H ZZZZZZZZ TEST HI-Z
- -------------------------------------------------------------------------
- DESCRIPTION
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