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id action
name Action!
appeared 1983
tags pl
lab Optimized Systems Software

fileType text
wordRank 473

lineCommentToken ;
printToken PRINTF
booleanTokens True False

hasConstructors true
hasLineComments true
 ; A comment
hasComments true
 ; A comment
hasPrintDebugging true
hasSemanticIndentation false
hasBooleans true

wikipedia https://en.wikipedia.org/wiki/Action!_(programming_language)
 example
  BYTE RTCLOK=20, ; addr of sys timer
       SDMCTL=559 ; DMA control
  
  BYTE ARRAY FLAGS(8190)
  
  CARD COUNT,I,K,PRIME,TIME
  
  PROC SIEVE()
  
    SDMCTL=0 ; shut off Antic
    RTCLOK=0 ; only one timer needed
  
    COUNT=0         ; init count
    FOR I=0 TO 8190 ; and flags
      DO
      FLAGS(I)='T ; "'T" is a compiler-provided constant for True
      OD
  
    FOR I=0 TO 8190 ; and flags
      DO
      IF FLAGS(I)='T THEN
        PRIME=I+I+3
        K=I+PRIME
        WHILE K<=8190
          DO
          FLAGS(K)='F ; "'F" is a compiler-provided constant for False
          K==+PRIME
          OD
        COUNT==+1
      FI
      OD
    TIME=RTCLOK ; get timer reading
    SDMCTL=34   ; restore screen
  
    PRINTF("%E %U PRIMES IN",COUNT)
    PRINTF("%E %U JIFFIES",TIME)
  RETURN
 related optimized-systems-software algol-68 atari-basic
 summary Action! is a procedural programming language similar to ALGOL 68 that is intended to produce high-performance programs for the Atari 8-bit family. The language was written by Clinton Parker and distributed on ROM cartridge by Optimized Systems Software starting in 1983. Action! was used to develop at least two commercial products—the Homepak productivity suite and Games Computers Play client program—and numerous programs in ANALOG Computing and Antic magazines. The system was not ported to any other platforms. Parker had previously developed Micro-SPL with Henry Baker, a similar programming language for the Xerox Alto. The 6502 assembly language source code for Action! was made available under the GNU General Public License by the author in 2015.
 pageId 1273369
 created 2004
 backlinksCount 14
 revisionCount 181
 dailyPageViews 15
 appeared 1983

goodreads
 title|year|author|goodreadsId|rating|ratings|reviews
 Action Programming Languages|1905|Michael Thielscher|22766460|0.0|0|0