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Task/Factorions/360-Assembly/factorions.360
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61
Task/Factorions/360-Assembly/factorions.360
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* Factorions 26/04/2020
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FACTORIO CSECT
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USING FACTORIO,R13 base register
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B 72(R15) skip savearea
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DC 17F'0' savearea
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SAVE (14,12) save previous context
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ST R13,4(R15) link backward
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ST R15,8(R13) link forward
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LR R13,R15 set addressability
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XR R4,R4 ~
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LA R5,1 f=1
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LA R3,FACT+4 @fact(1)
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LA R6,1 i=1
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DO WHILE=(C,R6,LE,=A(NN2)) do i=1 to nn2
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MR R4,R6 fact(i-1)*i
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ST R5,0(R3) fact(i)=fact(i-1)*i
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LA R3,4(R3) @fact(i+1)
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LA R6,1(R6) i++
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ENDDO , enddo i
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LA R7,NN1 base=nn1
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DO WHILE=(C,R7,LE,=A(NN2)) do base=nn1 to nn2
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MVC PG,PGX init buffer
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LA R3,PG+6 @buffer
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XDECO R7,XDEC edit base
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MVC PG+5(2),XDEC+10 output base
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LA R3,PG+10 @buffer
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LA R6,1 i=1
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DO WHILE=(C,R6,LE,LIM) do i=1 to lim
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LA R9,0 s=0
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LR R8,R6 t=i
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DO WHILE=(C,R8,NE,=F'0') while t<>0
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XR R4,R4 ~
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LR R5,R8 t
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DR R4,R7 r5=t/base; r4=d=(t mod base)
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LR R1,R4 d
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SLA R1,2 ~
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L R2,FACT(R1) fact(d)
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AR R9,R2 s=s+fact(d)
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LR R8,R5 t=t/base
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ENDDO , endwhile
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IF CR,R9,EQ,R6 THEN if s=i then
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XDECO R6,XDEC edit i
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MVC 0(6,R3),XDEC+6 output i
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LA R3,7(R3) @buffer
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ENDIF , endif
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LA R6,1(R6) i++
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ENDDO , enddo i
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XPRNT PG,L'PG print buffer
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LA R7,1(R7) base++
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ENDDO , enddo base
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L R13,4(0,R13) restore previous savearea pointer
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RETURN (14,12),RC=0 restore registers from calling save
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NN1 EQU 9 nn1=9
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NN2 EQU 12 nn2=12
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LIM DC f'1499999' lim=1499999
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FACT DC (NN2+1)F'1' fact(0:12)
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PG DS CL80 buffer
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PGX DC CL80'Base .. : ' buffer init
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XDEC DS CL12 temp fo xdeco
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REGEQU
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END FACTORIO
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