IBM 1130 User Manual page 684

Computing system

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As mentioned in Step 2, we now realize that there

is no real reason for blocks E, F, and G to be

sandwiched between the disk READ and the disk

Rearranging the program slightly, to make the

sequence Z, E, F, G, D, H, we reexecute and find

that the program runs substantially faster than be-

fore. There is still some disk arm movement, but

is not quite as frequent. Actually, as long as we

have disk data files and overlays, there will be

some disk arm movement. The goal is to reduce it,

cannot be eliminated altogether.

*F ILES( ltF ILEN)

*LOCALCOST,FINAL,NEWPG,BADCD,T,U.V.W

FILES ALLOCATION

STORAGE ALLOCATION

02FE (HEX) ADDITIONAL CORE REQWIRu

(HEX) ARITH/FUNC SUCAL WD CNT

SOCAL WU CNT

uISK rIIU SOtAL wu tNT

181A SOCAL 1

LIBF TRANSFER VECTOR

lDE9 SOCAL 2

17Bl SOCAL 1

18AO soeAL 1

187E SOCAL 1

lS3C SOCAL 1

lD80 soeAL 2

1D7D soeAL 2

lD34 soeAL 2

lC76 SOCAL 2

18CC SOCAL 2

1890 SOCAL 2

1807 SOCAL 2

1763 SOCAl 3

104B (HEX) IS THE EXECUTION ADDR

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