Intel 80C188EB, 80L188EC Displaying and Modifying Program Variables, Supported Data Types

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INTEL 186 EB/EC EVALUATION BOARD USER’S MANUAL

{STEP SSTEP} FROM code_addr count

This command loads the user’s program counter (PC) with code_addr and then single-steps count times.

5.4DISPLAYING AND MODIFYING PROGRAM VARIABLES

iECM-86 provides commands to display and modify program variables in several formats. In addition to simple variables such as bytes and words, more complicated variables such as reals and character strings are supported. iECM-86 commands allow variables to be displayed or initialized either individually or as regions of memory that contain variables of the given type.

5.4.1Supported Data Types

 

Table 5-1. Supported Data Types

 

 

Data Type

Description

 

 

BYTE

A BYTE is an eight-bit variable. No alignment rules are enforced for BYTE

 

variables.

 

 

CHAR

A CHAR is a special case of a BYTE. CHAR variables are displayed as

 

ASCII characters.

 

 

WORD

A WORD is a 16-bit variable. The address of a WORD is the address of its

 

least significant byte.

 

 

DWORD

A DWORD is a 32-bit variable. The address of a DWORD is the address of

 

its least significant byte.

 

 

STACK

A STACK variable is a 16-bit variable that resides in the system stack. The

 

address of a stack variable (stack_addr) is taken to be relative to the current

 

stack pointer

 

 

STRING

A STRING is a sequence of ASCII characters that are terminated by the

 

NUL character. The ASCII character NUL has the binary value of zero.

 

 

PORT

A PORT is an 8-bit I/O port. No alignment rules are enforced for PORTs.

 

 

WPORT

A WPORT is a 16-bit I/O port. The address of a WPORT is the address of its

 

least significant byte. A WPORT must start at an even address.

 

 

In addition to supporting access to variables of the above types, iECM-86 also provides commands to access the microprocessor registers and other special program variables such as PC (program counter), and SP (stack pointer). These commands include AX, AH, AL, BX, BH, BL, CX, CH, and CL.

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Contents Intel 186 EB/EC Evaluation Board User’s Manual Copyright Intel Corporation Contents Contents Chapter Introduction to the Software Rism Commands Irism VariablesRism Structure TrapisrFigures About This Manual Page Content Overview Chapter About this ManualNotation Conventions ItalicsRelated Documents Document Name Intel Order #FaxBack Service Electronic Support SystemsWorld Wide Web Technical Support Customer Support Telephone NumbersPage Getting Started Page Getting Started Intel 186 EC Evaluation Board Layout System Requirements WHAT’S in Your KITIntel 186 EB/EC Evaluation Board USER’S Manual ECM86 Page Hardware Overview Page Jumper Summary LA19/WRT ProtMicroprocessor PackagingMemory Configuration SramF000FFFF LCD I/OPhysical Memory Map Flash Program Memory Jumper Assembly for Flash Downloading Sram Static Memory Programmable LogicPower Supply E1 JumperSerial Interface InitP2 Serial Channel CTSPin to 9-Pin Adaptor EC Peripheral Expansion Connector JP2 40 pin Expansion InterfaceEB Peripheral Expansion Connector JP2 24 pin CPU Bus Expansion EB and EC LCD Interface LCD Interface DemoPage Introduction to Software Page Software Features Introduction to the SoftwareRestrictions Embedded Controller Monitor ECMUser Interface COM2, -COM1 DiagPOLL, -SIGNAL Reset SYSTEM, RES SYSTEM, RESET, RES6 DOS QuitRelated Information Reserved FunctionsReserved Memory Reserved I/OIECM-86 Commands Page Entering Commands File Operations Loading and Saving Object CodeOther File Operations Include filenameList filename LOG filenameResetting the Target Program ControlBreakpoints BR bpnumber BR bpnumber = codeaddrProgram Execution GO ForeverGO from codeaddr Till codeaddr GO from codeaddr Till codeaddr or codeaddrGO Till codeaddr or codeaddr Program SteppingStep Sstep Displaying and Modifying Program Variables Supported Data TypesByte Commands Byte byteaddress = bytevalueByte byteaddress to byteaddress Word Commands Byte byteaddress to byteaddress = bytevalueWord wordaddress = wordvalue Word wordaddress to wordaddressDword Commands Word wordaddress to wordaddress = wordvalueDword dwordaddress Dword dwordaddress = dwordvalueStack Commands Dword dwordaddress to dwordaddress = dwordvalueStack stackaddress Stack stackaddress to stackaddressString Commands Port CommandsString byteaddress Port portaddress = bytevalueWport Commands Port portaddress to portaddress = bytevalueWport wportaddress Wport wportaddress = wordvalue Wport wportaddress to wportaddressWport wportaddress to wportaddress = wordvalue Processor VariablesPC =codeaddress IRISM-186 Commands Page IRISM Variables Other VariablesRism Commands Rism StructureReceiving Data from the Host Sending Data to the HostSetdataflag Code 00H Transmit Code 02HReadbyte Code 04H Readword Code 05HWritedouble Code 09H Loadaddress Code 0AHReadpc Code 10H Writepc Code 11HTrapisr Reportstatus Code 14HMonitorescape Code 15H Readbport Code 16HWritewport Code 19H Step Code 1AHReadreg Code 1BH Writereg Code 1CHStart Up Commands / or \ Page Parts List Page PIN Header JUMP3 PIN Header JUMP4PIN PWR Conn CN2PMLX Reset PIN SIP SKT SIP14JP1 30 Header HDR2X30XU9 SOP44Intel SO20W20 Header HDR2X20 PNP Transistor SOT23 SMT PNP MMBT2907ALT1 Intel # PA28F400BVTable A-2 EC Board Manual Parts List Sheet 3 Index Index-2

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.
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