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Presents historical artifacts from the history of:

Philips Data Systems

This is an automatic "excavation" of a thematic subset of
artifacts from Datamuseum.dk's BitArchive.

See our Wiki for more about Philips Data Systems

Excavated with: AutoArchaeologist - Free & Open Source Software. 

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⟦c99cd1d77⟧ 

    Length: 3318 (0xcf6)
    Notes: pts_type(SC)
    Names: »ADDMOD.SC«

Derivation

└─⟦c47f25c27⟧ Bits:30009688 Philips computer tape "600318"
    └─⟦this⟧ »M:KMDV/ADDMOD.SC« 
└─⟦efe3a1cfc⟧ Bits:30009667 Philips computer tape "600113"
    └─⟦this⟧ »TOSSWORK/ADDMOD.SC« 
└─⟦fcfed1ed9⟧ Bits:30009706 Philips computer tape "M_167"
    └─⟦this⟧ »M:167D/ADDMOD.SC«

PTS(SC)

	IDENT ADDMOD 	REL 8.2 78-09-15  870105040820 
*			LREK 78-02-20 
* 
****************************************************
* 
*   PHILIPS TERMINAL SYSTEM  PTS
* 
*   TOSS DATA MANAGEMENT
* 
* 
*   LEVEL      #1 
* 
*   RELEASE    #8 
* 
****************************************************
* THIS ROUTINE EXECUTES THE DOUBLE ADDITION INSTRUCTION ON THE ALPHA
* COMPUTER
*CALLING SEQUENCE:
*                  A1-A2 = ARG1 
*                  AG-A7 = ARG2 
*        CF       A14,ADDMOD
*RETURN :         RESULT IN A1-A2 
* CAUTION  REGISTERS  A3,A4,A6,A7  ARE  CRUSHED.
         ENTRY    ADDMOD
ADDMOD   LDK      A3,0
         ANK.L    A7,/7FFF
         ANK.L    A2,/7FFF
         ADR      A2,A7 
         RF(3)    OVER1 
NOVER    ADR      A1,A6       * NO OVERFLOW 
         RF(1)    END1
         RF(2)    END2
         RF(3)    END3
NOVER1   ADK      A2,0
         RF(0)    END0
         RF(7)    END1
OVER1    ANK.L    A2,/7FFF
         ADK      A1,1
         RF(3)    OVER3 
         RB(7)    NOVER 
OVER3    ADR      A1,A6 
         RF(2)    END3
         ADK      A1,0
         RF(1)    END1
         RB(7)    NOVER1
END3     ADK       A3,/80 
END2      ADK      A3,/80 
END1      ADK      A3,/80 
END0     SLL      A3,1      **********************************
         ANK.L    A3,/0300
         LDK.L    A4,/FCFF
         AN.S     A4,2,A14
         OR.S     A3,2,A14    UPDATE CR IN PSW CALLING PROGRAM
         RTN      A14 
         END

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