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J24-1434-2_autocoderSpec_61


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                         IBM 1401 DATA PROCESSING SYSTEM BULLETIN



AUTOCODER SPECIFICATIONS
Applied Program No. 1401-AU-037



This edition, J24-1434-2, is a major revision and obsoletes both
J24-1434-1 and Technical Newsletter N24-0022.




Autocoder is an advanced symbolic programming sys-                 Machine Requirements
tem for the IBM 1401 Data Processing System. It sup-               The Autocoder processor can assemble programs for
plements and extends, but does not replace, the 1401               all IB~f 1401 systems. However, the machine used to
Symbolic Programming System, SPS.                                  assemble a program written in Autocoder language
   A more powerful language, the IBM 1401 Autocoder                must have at least:
includes macro-instructions, provides a free-form cod-                4,000 positions of core storage
ing sheet for greater programming flexibility, and re-                FOUR IBM 729 II, 729 IV or 7330 :Magnetic Tape Units
duces card handling by using magnetic tape for pro-                   (NOTE: A fifth magnetic tape unit can be used for
gram manipulation during assembly. The Autocoder                      delayed multiple program output. )
                                                                      IBM 1403 Printer, Model 2
processor can assemble programs designed to operate
                                                                      IBM 1402 Card Read-Punch
on IBM 1401 systems with a maximum storage capacity
of 16,000 positions.                                                  Advanced Programming Features
                                                                      High-Low-Equal Compare Feature
   With Autocoder, the user can provide library rou-                  Sense Switches (Not required for original assembly
tines for operations that are common to many source                   from a source program card deck, but necessary for
programs. These routines are extracted from the li-                   all other Autocoder operations.)
brary and tailored automatically by the processor to                 This bulletin contains the language specifications for
satisfy particular requirements outlined in the source             the IBM 1401 Autocoder. The system card deck contain-
program by the programmer. ..                                      ing the processor itself, a listing of the processor pro-
                                                                   gram, and operating instructions for program assembly
                                                                   are available from the IBM Program Library.







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