AEDIT-86User's Guide

CALC Command

Table 7-1. Operators' Precedence and Associativity

Operator

 

 

 

Operator

Interpretation

A..oclatlvlty

Cia••

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Parentheses

(

)

 

 

Controls evaluation

From inside

 

 

 

 

 

order: expressions in

to outside

 

 

 

 

 

parentheses are

 

 

 

 

 

 

evaluated before the

 

 

 

 

 

 

action of any outside

 

 

 

 

 

 

operator on the items

 

 

 

 

 

 

in parentheses

 

 

 

 

 

 

 

 

Unary

+

 

- -

! #

Single positive opera-

From right to

 

 

 

 

 

tor, Single negative

left, e.g.,

 

 

 

 

 

operator, 1'scomple-

!#3is

 

 

 

 

 

ment (- or ')

!(#3)

 

 

 

 

 

P~S operator (!)

 

 

..

 

 

 

NEG operator (#)

 

Power

 

 

 

Raising to the power

From right to

 

 

 

 

 

of

left, e.g.,

 

 

 

 

 

 

3·-4" S is

 

. /

 

 

 

3"·(4 "S)

Arithmetic

\

 

Multiplication, division,

From left to

(mul/div)

 

 

 

 

mod (remainder) div

right. e.g .•

 

 

 

 

 

 

11 • 12" 13 is

 

 

 

 

 

 

(11-12)·13

 

 

 

 

 

 

 

Arithmetic

+

 

-

 

Addition, subtraction

From left to

(add/sub)

 

 

 

 

 

right, e.g.,

 

 

 

 

 

 

2-3+4 is

 

 

 

 

 

 

(2-3)+4

 

 

 

 

Shift/rotate

SHL,SHR,SAL.SAR,ROL,ROR

Shift left, shift right,

From left to

 

 

 

 

 

shift algebraic left,

right, e.g.,

 

 

 

 

 

shift algebraic right,

S SAR 1 SAR

 

 

 

 

 

rotate left, rotate right.

1 is

 

 

 

 

 

 

(5 SAR 1)

 

 

 

 

 

 

SAR 1

 

 

 

 

Relational

< <= === <> => >

Less than, less than

From left to

 

 

 

 

 

or equal to. equal to,

right, e.g.,

 

 

 

 

 

not equal to, greater

3 < 4 < 2 is

 

 

 

 

 

than or equal to,

(3 < 4) < 2

 

 

 

 

 

greater than

 

 

 

 

 

 

 

 

Logical

&

I

1\

 

AND, OR, XOR

From left to

 

 

 

 

 

 

right. e.g ..

 

 

 

 

 

 

S & 3 1\ 7 is

 

 

 

 

 

 

(5 & 3) 1\ 7

 

 

 

 

 

 

 

7.3 Numeric Constants

The CALC command numeric constants are integer numbers. They can be binary, octal, decimal, or hexadecimal. The CALC command recognizes these constants by the suffix B, 0 (or Q), D, or H, respectively. Numbers without a suffix are consid- ered decimal. A numeric constant may be in the range-(2**31) to +(2**31)-1.

7.4 String Constants

A string constant may be 0-60characters long with same delimiter at both ends. The same delimiter means that there is no predefined string delimiter; rather, the charac- ter immediately to the left of the string constant is identified as a delimiter. Then the

7-3

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Intel AEDIT-86 manual Numeric Constants, String Constants, Operators Precedence and Associativity
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AEDIT-86 specifications

The Intel AEDIT-86, also known as the Intel 8086, is a notable microprocessor that played a critical role in shaping the computing landscape. Released in 1978, it was Intel's first 16-bit microprocessor, setting the stage for the x86 architecture that continues to influence modern computing.

One of the main features of the AEDIT-86 is its 16-bit architecture, which allows it to process data in larger chunks compared to its 8-bit predecessors. This capability not only improves performance but also increases the amount of memory that can be addressed, allowing for a maximum of 1 MB of RAM. This was a significant advancement at the time, enabling more complex software and operating systems to run efficiently.

The AEDIT-86 is built on a 3-micron process technology, which was innovative for its time and contributed to its performance capabilities. The microprocessor operates at a clock speed of up to 5 MHz, which allowed it to execute more instructions per second than previous generations of processors. This speed, combined with its wide data bus (16 bits), enables the processor to handle a larger volume of information more quickly.

Intel incorporated several key technologies in the AEDIT-86, including segmentation. This feature divides the memory into different segments, making it easier for programs to access data and improving memory management. The AEDIT-86 also supports a minimum of four 64 KB segments, which enhances the organization and access of programs and data in memory.

Another significant aspect of the AEDIT-86 is its compatibility with the existing 8080 and 8085 instruction sets, which facilitated easier migration for developers and helped the processor gain traction in the market. This backward compatibility allowed existing software to be ported to the new platform with minimal modification.

Furthermore, the Intel AEDIT-86 introduced a powerful instruction set that includes both integer and string manipulation commands, paving the way for more versatile programming. The instruction set architecture (ISA) of the AEDIT-86 supports both high-level programming languages and low-level assembly language, offering flexibility for various applications.

In summary, the Intel AEDIT-86 is a groundbreaking microprocessor known for its 16-bit architecture, advanced segmentation technology, and compatibility with earlier instruction sets. Its introduction marked the beginning of the x86 architecture, which has influenced countless processors and computing systems that followed. The AEDIT-86's features and technologies were instrumental in the evolution of personal computing, laying the groundwork for future innovations in the industry.
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