80C186EA/80C188EA, 80L186EA/80L188EA

INSTRUCTION SET SUMMARY (Continued)

 

 

 

 

 

80C186EA

80C188EA

 

Function

 

Format

 

Clock

Clock

Comments

 

 

 

 

 

Cycles

Cycles

 

LOGIC (Continued)

 

 

 

 

 

 

 

XOR e Exclusive or:

 

 

 

 

 

 

 

Reg/memory and register to either

0 0 1 1 0 0 d w

mod reg r/m

 

 

3/10

3/10*

 

 

 

 

 

 

 

4/16*

 

Immediate to register/memory

1 0 0 0 0 0 0 w

mod 1 1 0 r/m

data

data if we1

4/16

 

 

 

 

 

 

 

 

 

Immediate to accumulator

0 0 1 1 0 1 0 w

data

data if we1

 

3/4

3/4

8/16-bit

NOT e Invert register/memory

1 1 1 1 0 1 1 w

mod 0 1 0 r/m

 

 

3/10

3/10*

 

STRING MANIPULATION

 

 

 

 

 

 

 

MOVS e Move byte/word

1 0 1 0 0 1 0 w

 

 

 

14

14*

 

CMPS e Compare byte/word

 

 

 

 

 

22*

 

1 0 1 0 0 1 1 w

 

 

 

22

 

SCAS e Scan byte/word

 

 

 

 

 

15*

 

1 0 1 0 1 1 1 w

 

 

 

15

 

LODS e Load byte/wd to AL/AX

 

 

 

 

 

12*

 

1 0 1 0 1 1 0 w

 

 

 

12

 

STOS e Store byte/wd from AL/AX

 

 

 

 

 

10*

 

1 0 1 0 1 0 1 w

 

 

 

10

 

 

 

 

 

 

 

 

 

INS e Input byte/wd from DX port

0 1 1 0 1 1 0 w

 

 

 

14

14

 

OUTS e Output byte/wd to DX port

0 1 1 0 1 1 1 w

 

 

 

14

14

 

Repeated by count in CX (REP/REPE/REPZ/REPNE/REPNZ)

 

 

 

 

 

MOVS e Move string

 

 

 

 

8a8n

8a8n*

 

1 1 1 1 0 0 1 0

1 0 1 0 0 1 0 w

 

 

 

CMPS e Compare string

1 1 1 1 0 0 1 z

1 0 1 0 0 1 1 w

 

 

5a22n

5a22n

 

SCAS e Scan string

 

 

 

 

5a15n

5a15n*

 

1 1 1 1 0 0 1 z

1 0 1 0 1 1 1 w

 

 

 

LODS e Load string

 

 

 

 

6a11n

6a11n*

 

1 1 1 1 0 0 1 0

1 0 1 0 1 1 0 w

 

 

 

STOS e Store string

 

 

 

 

6a9n

6a9n*

 

1 1 1 1 0 0 1 0

1 0 1 0 1 0 1 w

 

 

 

 

 

 

 

 

 

 

 

INS e Input string

1 1 1 1 0 0 1 0

0 1 1 0 1 1 0 w

 

 

8a8n

8a8n*

 

OUTS e Output string

1 1 1 1 0 0 1 0

0 1 1 0 1 1 1 w

 

 

8a8n

8a8n*

 

CONTROL TRANSFER

 

 

 

 

 

 

 

CALL e Call:

 

 

 

 

 

 

 

Direct within segment

1 1 1 0 1 0 0 0

disp-low

disp-high

 

15

19

 

 

 

 

 

 

 

 

 

Register/memory

1 1 1 1 1 1 1 1

mod 0 1 0 r/m

 

 

13/19

17/27

 

indirect within segment

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Direct intersegment

1 0 0 1 1 0 1 0

segment offset

 

23

31

 

 

 

 

 

 

 

 

 

 

segment selector

 

 

 

 

 

 

 

(mod i 11)

 

 

 

 

Indirect intersegment

1 1 1 1 1 1 1 1

mod 0 1 1 r/m

 

38

54

 

JMP e Unconditional jump:

 

 

 

 

 

 

 

Short/long

1 1 1 0 1 0 1 1

disp-low

 

 

14

14

 

 

 

 

 

 

 

 

 

Direct within segment

1 1 1 0 1 0 0 1

disp-low

disp-high

 

14

14

 

 

 

 

 

 

 

 

 

Register/memory

1 1 1 1 1 1 1 1

mod 1 0 0 r/m

 

 

11/17

11/21

 

indirect within segment

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Direct intersegment

1 1 1 0 1 0 1 0

segment offset

 

14

14

 

 

 

 

 

 

 

 

 

 

segment selector

 

 

 

 

Indirect intersegment

1 1 1 1 1 1 1 1

mod 1 0 1 r/m

(mod i 11)

26

34

Shaded areas indicate instructions not available in 8086/8088 microsystems.

NOTE:

*Clock cycles shown for byte transfers. For word operations, add 4 clock cycles for all memory transfers.

47

47

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Image 47
Intel 80C186EA, 80L186EA, 80L188EA, 80C188EA specifications String Manipulation
Page 46 Page 48

80L186EA, 80L188EA, 80C186EA, 80C188EA specifications

The Intel 80C188EA, 80C186EA, 80L188EA, and 80L186EA microprocessors represent significant developments in the realm of embedded computing during the 1980s. These processors are part of Intel's x86 architecture, designed to cater to a variety of industrial applications, including automotive and telecommunications.

The 80C188EA and 80C186EA are CMOS variants that offer enhanced power efficiency and reduced heat generation compared to their NMOS predecessors. Operating at clock speeds of up to 25 MHz, these processors are known for their performance in real-time applications. The 80C188EA features a 16-bit data bus and a 16-bit address bus, which can support up to 1 MB of addressable memory. It also boasts an extended instruction set for greater computing flexibility, making it suitable for intricate tasks in embedded systems.

Similarly, the 80C186EA is characterized by its 16-bit architecture, but it includes additional on-chip memory management capabilities. This processor can handle 256 KB of memory directly and supports paged memory management, facilitating efficient multitasking and resource sharing in complex applications. Its integrated DMA controller and interrupt controller allow for superior handling of peripheral devices, making it ideal for real-time processing requirements.

On the other hand, the 80L188EA and 80L186EA are low-power variants optimized for battery-operated designs. These microprocessors are tailored for applications where power consumption is critical. The 80L188EA retains the essential features of the 80C188EA but operates at lower voltage levels, thus allowing for longer operational life in portable devices. The 80L186EA similarly benefits from reduced power consumption, taking advantage of its energy-efficient design to enhance durability in industrial automation scenarios.

All four processors leverage Intel's established x86 architecture, enabling a wide range of software compatibility. Their built-in support for real-time interrupt handling and I/O operations provides developers with valuable tools for building reliable embedded systems. Additionally, they feature on-chip oscillators and timers, further streamlining design requirements and reducing the need for external components.

Overall, the Intel 80C188EA, 80C186EA, 80L188EA, and 80L186EA processors are ideal for diverse applications in embedded systems. Their blend of processing power, energy efficiency, and versatility continues to influence the design of modern electronic devices, underscoring Intel's pivotal role in advancing microprocessor technology.
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