Editing Commands

Count. Count is significant only for (UP) and (DOWN) < HOME) s, where it multiplies the distance moved.

Related Commands. <LEFT), <RIGHT), <UP), <DOWN)

3.2 CARRIAGE RETURN Command

The < RETURN) key moves the cursor to the beginning of the next line. Special cases of <RETUR N) are-

•If the cursor is on the last line of the file, <RETURN) moves the cursor to the end of the file.

•If the auto indent option (SET Indent) is on, <RETURN) moves the cursor to the first nonblank character of the next line.

•If the cursor is on the last line of text on the screen, the screen scrolls up one line.

Count. This command accepts any count where count multiplies the distance moved. If count is / or greater than the number of lines that exist in the file from the current cursor position to the end of the file, the cursor jumps to the end of the file.

Related Commands. SET Indent

3.3 < CTRL-C) Function Key

<CTRL-C) serves as a soft command abort. A (CTRL-C) is recognized as soon as it is typed, even if a command is in progress. Therefore, (CTRL-C) may be used to terminate a time-consuming command while it is executing, e.g., a long FIND or repeated long macros. The termination is carried out at the first opportunity that allows termination without affecting AEDIT-86's integrity. <CTRL-C) does not abort the execution of an I/O related command. This option is the only way to abort an infinite loop in macro execution gracefully.

3.4 TAB Function Key

Pressing the TAB key causes the next prompt line to be displayed. The prompt line display is cyclic (i.e., after the last prompt line is displayed, the first is redisplayed).

3.5 Delete Function Keys

( RUBOUT) is a specifically labeled key. The other delete function keys are configurable: delete character <DELCH ), delete left <DELL), delete right

<DELR ) , and delete line (DELLI).

3.5.1 <RUBOUT)

The RUBOUT key deletes the preceding character. If a line feed is deleted, the preceding carriage return is deleted also.

There is no recovery from this deletion.

Count. (RUBOUT) ignores count.

3-3

Page 32 Page 34
Page 33
Image 33
Intel AEDIT-86 manual Carriage Return Command, CTRL-C Function Key, TAB Function Key, Delete Function Keys, Rubout
Page 32 Page 34

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.
Top Page Image Contents