Software

Using a highly interactive system (cont'd)

Using a general-purpose high-level programming language

Operating systems need to be very robust

Using assembler language

        STORF #0.,TOTAL
        STORI #0.,NUMBER
START:  CALL $READ,RECORD,FLAG
        TEST FLAG
        BNE END
        COMPF RECORD(1),#18.
        BLT START
        COMPB RECORD(16.),'F'
        BNE START
        ADDF RECORD(2),TOTAL
        BR START
END:    CONVF NUMBER,NUMF
        STORF TOTAL,AVER
        DIVF  AVER,NUMF
        CALL $PRINTS, STRING
        CALL $PRINTF, AVER
        CALL $EXIT
RECORD: .WORD 9.
TOTAL:  .WORD 2
NUMBER: .WORD 1               ...

R. Funnell

Last modified: Thu, 2007 Mar 15 08:35:42

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