A simple software simulation of the Pic16F84 µC
The SimPic16F84 project is being developed as part of a practical course in Applied Computer Science at Offenburg University of Applied Sciences. A software simulation of the Pic16F84 µC is developed. This means the simlator will be able to interpret the basic instruction set and to simulate the OPC execution. Due to the fact that this is a software simulation and to keep the facts simple, however compliance with CPU cycles and real time execution is waived.
| Preview image of Pic16F84 v0.0.2-alpha |
The following features are partially or fully supported by the latest version of this simulator:
- Executing custom programs parsed as LST file*
- Full support for the Pic16F84 instruction set
- Full support for interrupts (T0, INT, RB4-RB7)
- Support for reading and writing to the EEPROM
- Runtime Counter and modifyable quartz frequency
- I/O Ports (Port A, Port B)
- Timer support (TMR0)
- Debugging mode (e.g. Breakpoints)
*For now a specific LST format is required. See Custom Programs section for more details.
Releases are available in two different formats generally, as executable native installer* and executable JAR archive. Just get the latest release from the download section. Please note, for executing the JAR archive a Java runtime environment is required, at least Oracle's JRE SE 8.
- Download: SimPic16F84 Latest Version
*Depended to the version this kind of download is only supported for Microsoft Windows based systems. Because the JVM is already bundled inside of the installer, no addittional JRE is required.
Testing/Writing custom programs with/for the simulator is quite easy. You've just to notice some points: Because a university's course related LST parser implementation is used for now, the loaded LST file must match a specific format to get processed successfully. Please note the following format is only required for lines containing machine instructions. The address as well as the instruction itself has to be formatted as hexadecimal number.
Format: <Address> <Instruction> ... e.g. 0001 3930 ...
00000 ;Lines without machine instructions are ignored
00001 start
0000 3011 00002 movlw 11h ;Rest of line after the instruction itself doesn't matter
0001 3930 00003 andlw 30h
0002 380D 00004 iorlw 0Dh
0003 3C3D 00005 sublw 3Dh
0004 3A20 00006 xorlw 20h
0005 3E25 00007 addlw 25h
00008
00009
00010 end
0006 2806 00011 goto end
- Freddy1096 (University of Applied Science Offenburg)
- 0x1C1B (University of Applied Science Offenburg)
See also the list of contributors who participated in this project.
Copyright (c) 2019 0x1C1B; Freddy1096
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
MIT License or LICENSE for more details.
Hold Liable: Software is provided without warranty and the software author/license owner cannot be held liable for damages.