J51 is a 8051 emulator / debugger. J51 is a project Java Intel MCS51 (8051.8052, etc) emulator microprocessor family, with integrated debugger, a disassembler, Intel Hex file loader and more. Here are some key features of "J51" · · Disassembler Debugger • Intel Hex file loaderStandard emulated devices: · TIMER 0 / 1 (Mode 0,1,2 and interrupt) * Serial interface (Only in polled mode) Port Standard 0 4Microprocessor emulated: • Intel MCS 8051 (no device) • Intel 8051 • Intel 8052 • Philips Philips LPC674 • LPC900This version is still experimental, the sources are distributed only as a reference source and full documentation available with the first stable release. Requirements: Java Runtime 1.4.2 · or laterWhat New in this version: · Many bugs have been fixed. • The GUI and support for CMON51 have been improved.