AEDIT-86 Variables

AEDIT-86 User's Guide

SM

The name of the last file specified for the MACRO Get command.

so

The name of the OTHER input file.

SP

The name of the last file specified for the BLOCK Put command.

SR

The replacement string of (?)REPLACE.

ST

The target string of (-)FIND and (?)REPLACE.

SW

The name of the last file specified for the QUIT Write command.

6.4.2 Local Variables

All local variables are read-only numeric variables. They cannot be assigned, and they can be used only in the CALC command.

The following is an alphabetical list of positional values:

BOF

Logical value-true if the cursor is at the beginning of file.

COL

The current logical cursor position in the line. (This value is not affected

 

by the setting of Leftcol.)

CURCH

ASCII value of the current character.

CURWD

ASCII value of the two bytes at the current cursor location.

EOF

Logical value-true if the cursor is at the end of file.

INOTHR

Logical value-true if you are in the OTHER buffer.

ISDEL

Logical value-true if the character at the current position is in the

 

user defined delimiter set.

ISWHTE

Logical value-true if the character at the current position is a white

 

space (space, tab, LF-ar CR).

LOWCH

If the current character is an uppercase character (41H to 5AH),

 

LOWCH is the ASCII value of the lowercase character. Otherwise,

 

LOWCH is the same as CURCH.

NXTCH

ASCII value of the next character.

NXTTAB The column number of the next (i.e., to the right of the cursor) tab

 

position as defined by SET Tab.

NXTWD

ASCII value of the second and third bytes following the current cursor

 

location.

ROW

The current cursor row (actual row, not the logical line in the text).

UPCH

If the current character is a lowercase character (61 H to 7AH), UPCH

 

is the ASCII value of the uppercase character. Otherwise, UPCH is

 

the same as CUReH.

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Intel AEDIT-86 manual Local Variables

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.