INSTRUCTION SET REFERENCE

Table A-6. Instruction Set (Continued)

Mnemonic

 

 

 

Operation

 

 

 

 

Instruction Format

MULUB

MULTIPLY BYTES, UNSIGNED. Multiplies

 

DEST, SRC

(2 operands)

the source and destination operands, using

MULUB

wreg, baop

 

unsigned arithmetic, and stores the word

 

(011111aa) (baop) (wreg)

 

result into the destination operand. The sticky

 

 

 

 

bit flag is undefined after the instruction is

 

 

 

executed.

 

 

 

 

 

 

 

 

 

(DEST) ← (DEST) × (SRC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PSW Flag Settings

 

 

 

 

 

Z

N

C

V

VT

ST

 

 

 

 

 

—

—

— —

—

?

 

 

 

 

MULUB

MULTIPLY BYTES, UNSIGNED. Multiplies

(3 operands)

the two source byte operands, using

 

unsigned arithmetic, and stores the word

 

result into the destination operand. The sticky

 

bit flag is undefined after the instruction is

 

executed.

 

 

 

 

 

 

 

 

(DEST) ← (SRC1) × (SRC2)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PSW Flag Settings

 

 

 

Z

N

C

V

 

VT

ST

 

 

 

—

—

— —

—

 

?

 

 

DEST, SRC1, SRC2

MULUB wreg, breg, baop (010111aa) (baop) (breg) (wreg)

NEG

NEGATE INTEGER. Negates the value of the

 

integer operand.

 

 

 

 

 

 

(DEST) ← – (DEST)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PSW Flag Settings

 

 

 

 

Z

N

C

V

VT

ST

 

 

 

✓

✓

✓

✓

−

—

 

NEG wreg (00000011) (wreg)

NEGB

NEGATE SHORT-INTEGER. Negates the

 

 

value of the short-integeroperand.

NEGB breg

 

(DEST) ← – (DEST)

 

 

 

 

 

 

 

 

 

(00010011) (breg)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PSW Flag Settings

 

 

 

 

 

Z

N

C

V

VT

ST

 

 

 

 

✓

✓

✓

✓

−

—

 

 

NOP

NO OPERATION. Does nothing. Control

 

passes to the next sequential instruction.

 

 

 

 

 

 

 

 

 

 

 

 

PSW Flag Settings

 

 

 

Z

N

C

V

VT

ST

 

 

 

—

—

— —

—

—

 

 

NOP (11111101)

A-31

Page 335 Page 337
Page 336
Image 336
Intel 80C196NU, 8XC196NP, Microcontroller manual Mulub, Negate INTEGER. Negates the value, Dest ← Dest PSW Flag Settings
Page 335 Page 337

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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