INTEL 186 EB/EC EVALUATION BOARD USER’S MANUAL

6.5.20 WRITE_WPORT (Code 19H)

This command stores the least-significant word of the RISM_DATA register in the 16-bit output port pointed to by the RISM_ADDR register.

6.5.21 STEP (Code 1AH)

This command sets the target processor’s TRAP_FLAG and the RUN_FLAG and steps one instruction. After setting these flags, the action of this command is similar to the START_USER command followed by a TRAP.

6.5.22 READ_REG (Code 1BH)

This command reads the word value of a CPU register pointed to by the most-significant word of the RISM_DATA register and places the result in the least-significant word of the RISM_DATA register. Registers are accessed as shown in Table 6-2:

Table 6-2. iRISM Registers

MSW of RISM_DATA

Register

 

 

0000H

SS

 

 

0001H

ES

 

 

0002H

DS

 

 

0003H

DI

 

 

0004H

SI

 

 

0005H

BP

 

 

0006H

SP

 

 

0007H

BX

 

 

0008H

DX

 

 

0009H

CX

 

 

000AH

AX

 

 

000BH

IP

 

 

000CH

CS

 

 

000DH

FLAGS

 

 

6.5.23 WRITE_REG (Code 1CH)

This command stores the least-significant word of the RISM_DATA register in the CPU register pointed to by the most-significant word of the RISM_DATA register. Registers are accessed as shown in Table 6-2.

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Intel 80C188EB, 80L188EC, 80L186EB, 80L186EC Writewport Code 19H, Step Code 1AH, Readreg Code 1BH, Writereg Code 1CH, Flags

80L188EB, 80C188EC, 80C188EB, 80L186EB, 80C186EB specifications

The Intel 80L188EC, 80C186EC, 80L186EC, 80C186EB, and 80L186EB microprocessors represent a significant evolution in Intel's 16-bit architecture, serving various applications in embedded systems and computing during the late 1980s and early 1990s. These microprocessors are designed to offer a blend of performance, efficiency, and versatility, making them suitable for a range of environments, including industrial control, telecommunications, and personal computing.

The Intel 80L188EC is a member of the 186 family, notable for its low-power consumption and integrated support for a range of peripheral devices. It operates at clock speeds of up to 10 MHz and features a 16-bit architecture, providing a balance of processing power and energy efficiency. The 80C186EC, on the other hand, is a more advanced version, offering enhanced performance metrics with faster clock speeds and improved processing capabilities, making it ideal for applications that require more computational power.

The 80L186EC shares similarities with the 80L188EC but is enhanced further for various low-power applications, especially where battery life is crucial. With a maximum clock speed of 16 MHz, it excels in scenarios demanding energy-efficient processing without sacrificing performance.

In contrast, the 80C186EB and 80L186EB are optimized versions that bring additional features to the table. The 80C186EB operates at higher clock speeds, coupled with an extended instruction set, enabling it to handle more complex tasks and run sophisticated software. These enhancements allow it to serve well in environments that require reliable performance under load, such as data acquisition systems or advanced control systems.

The 80L186EB is tailored for specific low-power scenarios, integrating Intel's sophisticated low-power technologies without compromising on speed. Utilizing advanced process technologies, these chips benefit from reduced heat output and extended operating life, a significant advantage in embedded applications.

Overall, these microprocessors showcase Intel's commitment to innovation in 16-bit processing, marked by their varying capabilities and power profiles tailored to meet the demands of diverse applications, from industrial systems to consumer electronics. Their legacy continues to influence subsequent generations of microprocessor designs, emphasizing performance, energy efficiency, and versatile applications in computing technology. As such, the Intel 80C186 and 80L188 families play a crucial role in understanding the evolution of microprocessor technology.