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Software simulator for microcontrollers
µCsim can be used to simulate
microcontrollers. It supports
- Intel:
- MCS51 family,
- MCS48,
- MCS80, MCS85
- XA51,
- AVR core,
- Z80,
- TLCS90,
- Rabbit (r2k, r3k, r4k, r5k)
- Motorola:
- 6800,
- 6809,
- 68hc08,
- 68hc11,
- 68hc12,
- 6502,
- ST7,
- STM8,
- Padauk,
- PicoBlaze,
- p1516, p2223 soft processors,
- F8 soft processor.
It can run on Linux, Windows, OSX, BSD, and other systems.
See what's new in current version.
You can download µCsim from two places:
- SDCC homepage. µCsim is part of the SDCC
(Small Device C Compiler) project. You can download source of
SDCC or precompiled binaries from http://sdcc.sf.net.
Please note, that SDCC binary package contains limited µCsim,
including simulators for SDCC ports only.
- µCsim site. Standalone source package is
available on the µCsim web site:
http://mazsola.iit.uni-miskolc.hu/ucsim/download
Home site contains precompiled Debian (i386 and amd64
architectures) packages for all Debian based Linux
distributions, Windows installer and standalone Windows
package.
UNIX version is distributed in source, pre-compiled debian
stable package for i386 and amd64 architecture.
Windows version distributed as a setup executable and as a
portable zip package.
How to compile from source
- Get archive file, uncompress and untar it. These steps will
produce a directory ucsim-X.Y.Z where X.Y.Z is the version number.
- Make sure, that following packages are installed on your
system: make,
bison (or yacc), flex (or lex), libncurses-dev.
You will need a C and a C++ compiler as well.
- Go to the directory and configure the package. Issue configure
command. It will determine your system and produce Makefile.
Installation directory can be specified with --prefix=dir
option to the configure. Default directory is /usr/local.
Executable file will be placed in bin subdirectory.
- Compile the package with make command.
- Install executables ucsim_51, ucsim_avr, ucsim_hc08, ucsim_xa,
ucsim_z80, etc. to any directory you want. It can be done with make
install command which will place files in installation
directory specified with --prefix=dir option of configure. Note that you may have to have
special privilege to do this if installation directory is not writable
by the user.
Features of the simulator
- Code analyzer.
The simulator tries to figure out places of valid instructions in code
area.
- Processor types.
The simulator can simulate different type of microcontrollers.
- Multiple consoles.
The simulator can handle more than one command consoles and accepts
command from multiple sources. It also can be driven by other programs
such as debugger interfaces.
- Serial interfaces.
The simulator can virtually connect a terminal to serial interface of
the simulated CPU.
- Memory simulation.
Simulated CPU provides address spaces, storage is simulated by memory
chips, address decoders connects them together.
- Simulator interface.
This is a special interface which provides services for the simulated
program. This services can be used to control the simulator (for example
run/stop) and access some host features (print, file I/O).
- VCD file I/O.
This is a special virtual hardware peripheral which can monitor changes
of a memory location (or a bit in MCS51 where bit address space is
available) and write out changes to a VCD file. It can also be used to
replay events from a VCD file in order to simulate external events.
- Peripheral displays.
Textual
user intarfaces which can show information about a
peripheral. Some of them are interactive and can be used to
provide external input data for the simulated system (port,
uart).
- Command syntax and command
reference, expressions.
The simulator can be controlled via a command line
interface. It accepts simple commands.
Microcontroller specific features
