J51

Intel 8051 Java Simulator/Debugger 

J51 a Java Intel MCS51(8051,8052, etc) family microprocessor emulator, with integrated  disassembler, debugger, Intel hex file loader  , SDCC symbol table. Required java 1.2 or later. Now support the shared 8051 / 8052 memory model and can run the CMON51.

This is the final version for J51 now the 8051 emulator is integrated in the new project JMCE.

Features

• Disassembler
• Debugger
• Intel Hex file loader
• Emulator for Keil MCB900 Board
• Tested with the RT Free realtime operating system
• CMON51 support
• Terminal emulation with JTA for terminal emulation to the serial port.

Standard peripheral emulated

• Timer 0/1 (Mode 0,1,2 and interrupt)
• Serial interface in polled and interrupt mode.
• Standard port 0 to 4
• EEprom
• Flash memory
• Multiple DPTR
• SDCC Simbol table

Microprocessor supported

• Intel MCS 8051 (no peripheral)
• Intel 8051
• Intel 8052
• Philips LPC764
• Philips LPC900
• Sjlabs C8051F120 

Requirement

• Java runtime 1.2 or later better result with Java 1.6

Quick start

Start the emulator with : java -jar j51.jar

Select the CPU in the menu and load one of the application file provided in the distribution.

Example for Diseqc

Select cpu j51.diseqc.Diseqc and load diseqc.hex

Example for MCB900

Select cpu j51.keil.MCB900 and load blinky.hex

Example for MON51

Select cpu j51.cmon51.Mon51 and load cmon51.hex. When the cmon51.hex is loaded send from the uart window the tetris52.hex (before the go command set the PC to 8000)

Example for P8051

Select cpu j51.intel.P8051 and load tetris52.hex (be carefully you must set PC to 8000) or one example from RT Free Operating system blink.hex

Screenshot

Sample debug session of the diseqc software

Sample screen shot with Keil MCB900

Sample screen from CMON51 with Tetris

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