The Implementation of APL\360

Breed, Lawrence M.; Lathwell, R. H.

doi:10.1016/b978-0-12-395608-8.50044-x

Cited by 17 publications

(4 citation statements)

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“…The APL system is a counterexample. L. Breed and R. Lathwell, who, together with Roger Moore, built the system, state [65] that: "The APL processor is interpretive; however, because of the efficiencies afforded by array operations, program execution is often one-tenth to one-fifth as fast as compiled code." Another factor is the excellence of the design.…”

Section: • Pliimentioning

confidence: 97%

The History of Language Processor Technology in IBM

Allen

1981

IBM J. Res. & Dev.

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Section: • Pliimentioning

confidence: 97%

The History of Language Processor Technology in IBM

Allen

1981

IBM J. Res. & Dev.

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“…X÷21~R~X [3] Y÷21~RpY [4] R÷X+Y [5] C0÷,256~R [6] R*,~(802)TR V TABYTEADD~ 1 2 3 4 5 Figure 3 shows the logic of a commercially available TTL MSI circuit from which the desired ADDER operations could be achieved (7). This circuit provides 4 bits of an adder.…”

Section: Exanlplesmentioning

confidence: 99%

Use of APL in microprogrammable machine modeling

Bingham

1971

SIGPLAN Not.

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APL has long been a versatile language suitable for concise expression of digital processing algorithms. The availability of an interpretive version has permitted creation of executable models of entire soft, finn or hard machines. These APL models can both serve as formal functional descriptions, and as tools for insuring that various hardware realizations are functionally equivalent. A microprogrammable machine model is described. This model provides an easily extended machine that allows a microprogrammer to interactively develop the machine image characterizing his application. He can debug his microinstruction sequences with selective visibility to significant state changes under his control. Statistics gathering is automatic and new statistics are easily added. Examples of APL modeling at various levels are given. This model has been used prior to verification of microcode on actual hardware and for microprogram memory tradeoff analyses. APL has been particularly useful in non-numeric tasks related to software and hardware design.

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“…The system has been programmed for IBM System/360 computers using typewriter terminals connected to the central computer by telephone lines, see Falkoff and Iverson (1968) and Breed and Lathwell (1968). The APL language leans heavily on mathematical notions but does not slavishly follow classical mathematical notation.…”

Section: Apl/360mentioning

confidence: 99%

A Survey of Interactive Graphical Systems for Mathematics

Smith

1970

ACM Comput. Surv.

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Extant, extinct, and proposed systems for performing interactive mathematics are surveyed, with special attention to those systems with graphical output. The systems are grouped as general purpose graphical, special purpose graphical, and other systems of interest. The solution of a least squares data-fitting problem by the various general purpose graphical systems is then compared to the solution of the same problem by PEG, a special purpose graphmal system for interactive least squares data-fitting, written at the Stanford Linear Accelerator Center. A summary inelude~ a discussion of many of the references that appear in the fairly comprehensive bibliography.

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The Implementation of APL\360

Cited by 17 publications

References 1 publication

The History of Language Processor Technology in IBM

The History of Language Processor Technology in IBM

Use of APL in microprogrammable machine modeling

A Survey of Interactive Graphical Systems for Mathematics

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