Provided by: sdcc-ucsim_3.3.0+dfsg-1ubuntu1_amd64 bug


       s51, savr, sz80 - 8051, AVR and Z80 microcontrollers simulator for SDCC.


       s51 [options] filenames
       savr [options] filenames
       sz80 [options] filenames


       The information in this man page is an extract from the full documentation of SDCC, and is
       limited to the meaning of the options.

       For complete and current documentation, refer to the ucSim simulator User Guide.


       ucSim  is  a  microcontroller  simulator.  It   is   extensible   to   support   different
       microcontroller families.

       MCS51 family is simulated bys51.
       AVR family is simulated by savr.
       Z80 processor is simulated by sz80.

       Specified  files must be names of Intel hex files. Simulator loads them in specified order
       into the ROM of the simulated system.


       -t CPU Type of CPU. Recognized types are: 51, 8051, 8751, C51,  80C51,  87C51,  31,  8031,
              C31,  80C31,  52,  8052,  8752, C52, 80C52, 87C52, 32, 8032, C32, 80C32, 51R, 51RA,
              51RB, 51RC, C51R, C51RA, C51RB, C51RC, 89C51R, 251, C251, DS390, DS390F. Note  that
              recongition  of  a CPU type as option does not mean that the simulator can simulate
              that kind of CPU. Default type is C51. DS390  supports  Dallas  DS80C390  dual-dptr
              operations, DS390F supports minimal flat24 mode code and dual-dptr operations.

       -X freq[k|M]
              XTAL  frequency  is  freq Hertz.  k or M can be used to specify frequency in kHZ or
              MHz. Space is not allowed between the number and the  k  or  M.  Default  value  is
              11059200 Hz.

       -c file
              Open  command console on file. Command consoles are on standard input and output by
              default. Using this option the console can be opened on any file for example on the
              serial interface of the computer.

       -Z portnum
              Listen  for incoming connections on port portnum. Using this option uCsim can serve
              multiple consoles. You can get a console by  simply  telnet  into  machine  running
              uCsimto  port  portnumber.  This option is not available on platforms which doesn't
              support BSD networking.

       -s file
              Connect serial interface of the simulated microcontroller to the file.  Nothing  is
              used  by default which means that characters transmitted by serial interface of the
              simulated microcontroller go to nowhere and it will never receive anything. If  you
              are  going  to  communicate with serial interface interactively the best idea is to
              specify a teminal with -s option.

       -S in=file,out=file
              Using this option you can specify different files for input and output streams that
              uCsim uses to simulate microprocessor's serial interface.

       -p prompt
              Using  this  option  you  can  specify  any  string  to  be  the  prompt of command
              interpreter, for example:
              $ s51 -p "s51> "
              ucsim 0.2.12, Copyright (C) 1997 Daniel Drotos, Talker Bt.
              ucsim comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
              This is free software, and you are welcome to redistribute it
              under certain conditions; type `show c' for details.

       -P     Prompt will be a null ('\0') character. This feature can  be  useful  for  programs
              which controlls simulator through a pipe.

       -V     Verbose  mode.  The  simulator notifies you about some kind of internal actions for
              example interrupts. Messages are printed on command console.

       -v     Print out version number and stop.

       -H     Print out types of known CPUs. Names printed out by this  option  can  be  used  to
              determine CPU type using -t option.

       -h     Print out a short help about the options and stop.


       ucSim is distributed under the GNU General Public License.


       sdcc(1), s51(1), savr(1), sz80(1).


       This  manual  page  was  written  by  Aurelien  Jarno <>, for the Debian
       GNU/Linux system (but may be used by others).