Intel 80L186EC Writedouble Code 09H, Loadaddress Code 0AH, Readpc Code 10H, Writepc Code 11H

Page 74

INTEL 186 EB/EC EVALUATION BOARD USER’S MANUAL

6.5.8WRITE_DOUBLE (Code 09H)

This command stores the RISM_DATA register in the double-word of memory pointed to by the RISM_ADDR register and increments the RISM_ADDR register (by four) to point at the next memory double-word.

6.5.9LOAD_ADDRESS (Code 0AH)

This command loads the RISM_ADDR register with the least-significant word in the RISM_DATA register.

6.5.10 READ_PC (Code 10H)

This command loads the RISM_DATA register with the CS (Code Segment) and IP (Instruction Pointer) associated with the user’s code. Most RISM implementations have to check RUN_FLAG to determine how to access the user’s PC.

6.5.11 WRITE_PC (Code 11H)

This command loads the CS (Code Segment) and the IP (Instruction Pointer) associated with the user’s code from the RISM_DATA register. The host software will invoke this command only while user code is not running.

6.5.12 START_USER (Code 12H)

This command starts execution of user code, clears the TRAP_FLAG, and sets the RUN_FLAG. The action of this command relies on its being executed as part of an ISR (Interrupt Service Routine). At the start of the ISR, the current CS:IP and FLAGS are pushed into the stack. If the user code is not running, the CS:IP and FLAGS that are pushed into the stack are associated with an idle loop that the RISM runs while it waits for an inter- rupt. The START_USER command deletes the CS:IP and FLAGS from the stack and replaces them with USER_CS, USER_IP and USER_FLAGS. When control returns from the ISR, the user’s code (rather than the idle loop) executes. The host software will not issue a GO command if the user code is already running.

6.5.13 STOP_USER (code 13H)

This command stops the execution of user code and clears the RUN_FLAG. The action of the HALT command mirrors that of the GO command. In the case of the HALT command, the user’s CS:IP and FLAGS are pushed into the stack upon entry to the ISR. The STOP_USER command saves this user information in USER_CS, USER_IP, and USER_FLAGS and replaces it with CS:IP and FLAGS values associated with the idle loop. When control returns from the ISR, the idle loop (rather than the user’s code) executes. The host software will not issue a HALT command unless the user code is running.

6-4

Page 73 Page 75
Image 74
Page 73 Page 75
Contents Intel 186 EB/EC Evaluation Board User’s Manual Copyright Intel Corporation Contents Contents Chapter Introduction to the Software Rism Structure Rism CommandsIrism Variables TrapisrFigures About This Manual Page Content Overview Chapter About this ManualNotation Conventions ItalicsRelated Documents Document Name Intel Order #World Wide Web FaxBack ServiceElectronic Support Systems 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 PackagingF000FFFF Memory ConfigurationSram 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 Diag6 DOS POLL, -SIGNALReset SYSTEM, RES SYSTEM, RESET, RES QuitReserved Memory Related InformationReserved Functions Reserved I/OIECM-86 Commands Page Entering Commands File Operations Loading and Saving Object CodeOther File Operations Include filenameList filename LOG filenameBreakpoints Resetting the TargetProgram Control BR bpnumber BR bpnumber = codeaddrProgram Execution GO ForeverGO Till codeaddr or codeaddr GO from codeaddr Till codeaddrGO from codeaddr Till codeaddr or codeaddr Program SteppingStep Sstep Displaying and Modifying Program Variables Supported Data TypesByte byteaddress to byteaddress Byte CommandsByte byteaddress = bytevalue Word wordaddress = wordvalue Word CommandsByte byteaddress to byteaddress = bytevalue Word wordaddress to wordaddressDword dwordaddress Dword CommandsWord wordaddress to wordaddress = wordvalue Dword dwordaddress = dwordvalueStack stackaddress Stack CommandsDword dwordaddress to dwordaddress = dwordvalue Stack stackaddress to stackaddressString byteaddress String CommandsPort Commands Port portaddress = bytevalueWport wportaddress Wport CommandsPort portaddress to portaddress = bytevalue Wport wportaddress to wportaddress = wordvalue Wport wportaddress = wordvalueWport wportaddress to wportaddress Processor VariablesPC =codeaddress IRISM-186 Commands Page IRISM Variables Other VariablesReceiving Data from the Host Rism CommandsRism Structure Sending Data to the HostReadbyte Code 04H Setdataflag Code 00HTransmit Code 02H Readword Code 05HReadpc Code 10H Writedouble Code 09HLoadaddress Code 0AH Writepc Code 11HMonitorescape Code 15H TrapisrReportstatus Code 14H Readbport Code 16HReadreg Code 1BH Writewport Code 19HStep Code 1AH Writereg Code 1CHStart Up Commands / or \ Page Parts List Page PIN PWR Conn CN2PMLX PIN Header JUMP3PIN Header JUMP4 JP1 ResetPIN SIP SKT SIP14 30 Header HDR2X30Intel XU9SOP44 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.
Top Page Image Contents