Starting the simulator
There are separate programs to simulate different microcontroller families:
MCS51 family is simulated by s51
AVR family is simulated by savr
Z80 processor is simulated by sz80
XA family is simulated by sxa
HC08 processor is simulated by shc08
ST7 family is simulated by sst7
STM8 family is simulated by sstm8
TLCS90 family is simulated by stlcs
Padauk family is simulated by spdk
The simulator can be started in the following way:
$ s51 [-hHVvPgGwb] [-p prompt] [-t CPU] [-X
freq[k|M]] [-C cfg_file] [-e command] [-c file] [-s file] [-S
optionlist] [-I if_optionlist] [-a nr] [-Z portnum] [-k portnum] [-o colorlist] [files...]
Specified files must be names of Intel hex files. Simulator loads them in
the specified order into the ROM of the simulated system. If the file is
specified without extension, the simulator will try to find intel hex file
(filename extended with .hex), omf file (with .omf) and cdb file (with
.cdb extension). Simulator can interpret content of these SDCC output
files and reads information from them.
Options:
- -t CPU
- Type of CPU. Recognized types are different for different simulators,
for example MCS51 simulator recognizes 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 recognition 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 24 bit flat mode, dual-dptr operations,
etc. DS390F is the same as DS390, but it starts already in 24 bit flat
mode (ACON = 0xFA instead of 0xF8). DS390F is needed to run programs
compiled with sdcc -mds390.
-H option can be used to
list all of recognized CPU types.
See how to select CPU type.
- -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 cfg_file
- Read and execute initial commands from specified file.
- -e command
- Execute command at program startup (before config file).
- -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 μCsim can serve multiple consoles. You can get a console
by simply telnet into machine running μCsim to port portnumber.
This option is not available on platforms which doesn't support BSD
networking.
See how to use multiple consoles.
- -k portnum
- Listen for incoming connections on port portnum. When this
port connected, the connection will be attached to simulated UART0.This
option is not useful for other UARTs, so it is better to use the more
general -S option.
- -s file
- Connect serial interface (UART0) 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 terminal with -s option.
- -S uart=nr,in=file,out=file,port=nr,iport=nr,oport=nr
- Using this option you can specify different files for input and output
streams that μCsim uses to simulate microprocessor's serial
interface.
See more about serial interface simulation.
- -I
if=memory[address],in=file,out=file
- Specify options (as comma separated list) for the simulator interface.
if option turns on the interface and specifies address space and
location for use by the interface. in and out can be
used to specify file names to use for file IO.
See more about simulator 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.
0s51>
- -P
- Prompt will be a null ('\0') character. This feature can be useful for
programs which controls simulator through a pipe.
- -o colorsetting,...
- List of color settings in form: what=colspec,...
where what specifies object to be colored and colspec is
: separated list of color options e.g.: prompt=b:white:black (bold white
on black).
what can be:
- prompt prompt color,
- prompt_console
console number in front of the prompt,
- command color of
entered command,
- answer default color
for answers printed by commands,
- result color of
expression result,
- dump_address address
color in memory dump (1st column)
- dump_number color of
numerical part of the dump (2nd column)
- dump_char color of
textual part of the dump (3rd column)
- error color of error
messages
- debug color of debug
messages
- ui_mkey menu-key
color on UI display
- ui_mitem menu-item
color on UI display
- ui_label label color
on UI display
- ui_time color of
time-value on UI display
- ui_title title color
on UI display
- ui_run run-state
color on UI display
- ui_stop stop-state
color on UI display
colspec can be a rendering option, or a color name. First color
name is used for foreground color and the last one will be the color of
background. Rendering options are:
- b bold
- f faint
- i italic
- u undelined
- d double underlined
- c crossed over
- o overlined
- k or l
blink
Color name can be a predefined name, or an RGB value. Known names are:
- black
- bblack (bright black,
this is grey on some terminals)
- red
- bred (bright red)
- green
- bgreen (bright green)
- yellow
- byellow (bright
yellow)
- blue
- bblue (bright blue)
- magenta
- bmagenta (bright
magenta)
- cyan
- bcyan (bright cyan)
- white
- bwhite (bright white)
How the named colors appear on the screen depends on the terminal
emulator program.
RGB values can be specified as #RRGGBB
where components are two character hexadecimal values of the red, green
and blue.
Example (set prompt to blinking bold white on green, and set command to
underlined bright green on black):
-o
prompt=lb:white:green,command=u:bgreen:black
- -b
- Black & white (non-color) console.
- -g
- Go, start simulation when the program is loaded.
- -G
- Start simulation when the program is loaded and terminate the
simulator when the simulation stops (maybe on breakpoint).
- -a nr
- Set size of variable space. Default is 256.
- -w
- Writable flash.
- -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.