INSTRUCTION SET REFERENCE

 

 

 

Table A-6. Instruction Set (Continued)

 

 

 

 

 

 

 

 

 

 

 

Mnemonic

 

 

 

Operation

 

 

 

 

Instruction Format

 

 

 

 

 

EST

EXTENDED STORE WORD. Stores the

 

SRC, DEST

 

value of the source (leftmost) word operand

EST

wreg, [treg]

 

into the destination (rightmost) operand.

 

ext. indirect: (00011100) (treg) (wreg)

 

This instruction allows you to move data from

 

ext. indexed: (00011101) (treg) (disp-low)

 

the lower register file to anywhere in the 16-

 

 

(disp-high) (disp-ext) (wreg)

 

Mbyte address space.

 

 

 

 

 

 

 

 

 

 

 

 

 

ext. indirect: (DEST) ← (SRC)

 

 

NOTE:

For 20-bit addresses, the offset

 

ext indexed: (DEST)← (SRC) + 24-bit disp

 

 

 

 

 

 

 

 

 

 

must be in the range of +524287

 

 

 

 

 

 

 

 

 

 

to –524288.

 

 

 

PSW Flag Settings

 

 

 

 

 

 

 

 

 

 

 

 

Z

N

C

V

VT

ST

 

 

 

 

 

—

—

— —

—

—

 

 

 

 

 

 

 

 

ESTB

EXTENDED STORE BYTE. Stores the value

 

SRC, DEST

 

of the source (leftmost) byte operand into

ESTB

breg, [treg]

 

the destination (rightmost) operand.

 

ext. indirect: (00011110) (treg) (breg)

 

This instruction allows you to move data from

 

ext. indexed: (00011111) (treg) (disp-low)

 

the lower register file to anywhere in the 16-

 

 

(disp-high) (disp-ext) (breg)

 

Mbyte address space.

 

 

 

 

 

 

 

 

 

 

 

 

 

ext. indirect: (DEST) ← (SRC)

 

 

NOTE:

 

 

ext indexed: (DEST)← (SRC) + 24-bit disp

For 20-bit addresses, the offset

 

 

 

 

 

 

 

 

 

 

must be in the range of +524287

 

 

 

 

 

 

 

 

 

 

to –524288.

 

 

 

PSW Flag Settings

 

 

 

 

 

 

 

 

 

 

 

 

Z

N

C

V

VT

ST

 

 

 

 

 

—

—

— —

—

—

 

 

 

 

 

 

 

 

EXT

SIGN-EXTEND INTEGER INTO LONG-

 

 

 

INTEGER. Sign-extends the low-order word

EXT

lreg

 

of the operand throughout the high-order

 

(00000110) (lreg)

 

word of the operand.

 

 

 

 

 

 

 

 

 

 

 

 

if DEST.15 = 1 then

 

 

 

 

 

 

 

(high word DEST) ← 0FFFFH

 

 

 

 

 

else

 

 

 

 

 

 

 

 

 

(high word DEST) ← 0

 

 

 

 

 

 

end_if

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PSW Flag Settings

 

 

 

 

 

 

Z

N

C

V

VT

ST

 

 

 

 

 

✓

✓

0

0

—

—

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A-19

Page 323 Page 325
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Intel 80C196NU, 8XC196NP, Microcontroller manual SRC, Dest, EXT SIGN-EXTEND Integer Into Long
Page 323 Page 325

Microcontroller, 80C196NU, 8XC196NP specifications

The Intel 8XC196NP and 80C196NU microcontrollers are part of Intel's renowned 16-bit microcontroller series that gained popularity in the 1980s and 1990s for embedded systems applications. Designed for a variety of applications, these microcontrollers are characterized by their robust performance, versatility, and industry-standard architecture.

The 8XC196NP features an enhanced instruction set with over 100 instructions, allowing for efficient code execution. It operates at clock speeds up to 16 MHz, which contributes to improved performance in time-sensitive applications. The microcontroller is equipped with a 16-bit data bus, enabling more efficient data handling compared to its 8-bit predecessors, thus accommodating complex algorithms and large data sets.

In terms of memory architecture, the 8XC196NP supports an addressable memory space of up to 64 KB of program memory and 64 KB of data memory. This configuration provides sufficient space for large applications while ensuring fast data access. The microcontroller includes integrated features such as timers, serial I/O capabilities, and interrupt processing, which enhance its functionality for real-time applications and control mechanisms.

The 80C196NU, on the other hand, is designed for lower power operation, making it suitable for battery-powered devices. This microcontroller maintains similar features to the 8XC196NP while offering advancements that support low-power consumption. The 80C196NU can also function in a range of temperature environments, making it adaptable for industrial applications.

Both the 8XC196NP and 80C196NU support external memory interfacing, allowing designers to expand the system's capability by connecting additional ROM and RAM. This flexibility makes them appealing for developing complex systems, such as motor controls, industrial automation, and consumer electronics.

Another standout feature of these microcontrollers is their built-in debugging capabilities. Intel provided hardware and software tools that enabled developers to test and troubleshoot their applications effectively, reducing the development time and increasing reliability.

Overall, the Intel 8XC196NP and 80C196NU microcontrollers stand out for their dependability, versatility, and performance, contributing significantly to the evolution of embedded system design. Their legacy continues to influence modern microcontroller technology, ensuring their relevance in a wide array of applications today.
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