Disassemble 8086 ROM

hi, i am an electrical engineer. i have expertise in embedded system designer.i can help you with this project.

Hi, but do you have the dumps of those memories that should be reverse engineered? I was very familiar with 8086 instruction set and wrote many programs with assembly. Let me see the code. Thanks, ilya

8086. Dear Sir, hello. I can disassemble such a machine code. Commonly my tool is IDA. I know 8255 IO, 8253 timers etc. Best Regards, Anton.

Electrical Engineer (Gold-Medalist) from the oldest and the most reputable engineering institute of Pakistan (UET, Lahore). Done my internship @ US based R&D embedded company “Mentor Graphics” and currently working as Professional “Embedded Design Engineer” @ Asia’s #1 ranked R&D company “MicroTech Industries”… Current Research Project: Currently researching on MSP430 and Cortex M4 cores in order to find a solution for robust way of “Remote Firmware Up-gradation”. This research project is intended to save time and money needed for manual firmware up-gradation. “MicroTech Industries” will be able to save millions of dollars per annum by having this feature embedded into its “Smart Energy Meters” Other Distinguishing Characteristics: 1. Perfect Academic Record in Electronics+Circuit Design+DSP(A+ in all these subjects) during my BS Electrical Engineering 2. Done immense # of projects in Electronics/Telecomm including: • Automated Room Temperature control by implementing Closed loop Feedback Controller • 2 Port LC Resonator circuit characterization • DC-DC Flyback converter • Direct AC-AC Converter • Cellular CDMA receiver Design • Score Keeping board with the time left indication (servo motor enabled) 3. Founding director of “AK Electronics Lab” in which I have personally purchased all required testing, debugging and small scale PCB manufacturing facilities : • Digital Storage Oscilloscope • SMD Soldering rework station and much more... Contact me for more details

8086 Dear Sir If you allow I will complete your project. I am electronics engineer. Thanks Engr. Malik Soban

Hi. In the 80ies I wrote a simple dedicated real time operating system for a 8086 based embedded system. My preferred compiler over the past many years is Visual C 6.0 and I stil use it once in a while. I am not sure it was the 8255A but I did work with that kind of 3 ports controller before. Most of my live I was working on embedded systems writing code in C and assembly. I have 8 years experience as electronic technician before doing a computer science baccalaureate in 1982.

I'm from VietNam and I have some experience on computer architecture. we can discuss more detail on it. if you want me, I need to know more clearly about this job. YH: hoanglongroyal skype : hoanglongroyal

Hi, 8086! I am a Canadian Technology expert. I started at the age of 13 and my first computer was the Sinclair ZX-81. This is not a problem, I know assembly from Z80A, 8080, 6502, MC6800X and Intel 80x86. I would love to do this. The price is negotiable. I have great friends from Ireland in Canada and I can get you references from my friends in Ireland or UK. Thank you. Warm regards, Anthonus.

Good morning sir. I have huge experience in Assembly design and reverse engineering. I can guarantee top-class result quality. Unfortunately nothing can be agreed about the number of hours required. If you are prepared to pay for a well-done job, whose cost can be just estimated on-the-run, and determined in the end, I think I am the best candidate you can find here. If you need a budget defined right now, I am sorry, I am not useful to you. Furthermore it must be stated if the 2 roms are removable: if they are soldered, I hope that the CPU will be removable, and I'll have to find an appropriate ICE to read the code. This will charge somewhat the start of the project. Finally, a HUGE help in determining the expected overall cost would be to know if the code was directly written on the bare CPU, or if an operating system - real time executive - bootloader was housed below the application code. It's sure, this last possibility would increase by orders of magnitude the project expected load. Anyhow, the numbers you placed in your request ( 1-4 weeks, 20 hours per week ) are pointless to me. Just one reference ( iApx is quite an old device, you know... :) ): I wrote 8086 Asset Control fixed point package for European Space Agency Space Shuttle's Tethered Satellite System.... And I contributed to develop Olivetti's C compiler for Intel CPUs. Hope to hear from you. Take care. Danilo

I'm quite capable of disassembling 8086 code. Reverse enginnering the code to derive its functionality would be the most difficult part, but I assure you I can do this. I hope to hear from you.

Hi, Do you have the machine code ? or do you expect the freelancer to extract the code out of the machine? Regards Saad Ali

One year experience with w32 asm language. And i have read and analyzed a lot asm file in linux kernel. Alse familiar with x86 system architecture, interrupt mechanism etc.

This sounds like an intriguing project. I am a developer with more than 15 years experience writing software in both C and 8086 assembler. I am quite accustomed to working with disassembled machine code and converting that back to C code; it is something I do almost every day during my day job as a kernel developer for embedded operating systems. This project, would I expect be best done in a sequence of steps. I am presently assuming that all debugging information has been stripped from the ROMS. If this assumption is incorrect, then that only makes things easier. 1. Disassemble the machine code and get the assembly instructions. 2. Identify data variables. 3. Identify some preliminary data structures. 4. Create an initial draft of C code that corresponds to the assembly instructions. This initial draft level may not be promoting the ease-of-reading. Naming can be expected to correlate to the following style ... A. functionXXXX B. varYYYY C. argZ, or pArgZ When the variable type is unknown, it will be in capital letters. When certain, it will be lower case. At this point it is unclear what level of C quality you desire. The quality at the end of step 4 is expected to be low. Enhancing the quality after it requires more algorithmic analysis and is much harder and more time consuming to do. It is hard at this point to predict the total amount of effort. How large are the ROMS? Are there graphics? Floating point calculations?

Experienced with embedded software/hardware/FPGA design and development for safety/performance critical systems. Specialties: 1- Languages: C, C++, C#, Verilog, Vhdl and Assembly 2- IDEs: XILINX ISE, QUARTUSII, High Performance Embedded Workshop (HEW), KEIL, AVR STUDIO and MPLAB. 3- Hardware Platforms: Mitsubishi M16C, ARM, AVR, 8051, Virtex-5 FPGA 4- Simulation: MATLAB and MODELSIM 5- Debugging: Signal integrity testing, JTAG debugger, Oscilloscope, Logic Analyzer.

8086.. I can disassemble the machine code to C language and can explain the functionality of the system in detail.

< 8086 > I had been working as an embedded systems developer. I can understand hardware design schematics very well. Also, I am very good in x86 Assembly language programming and high level language programming.

I have experience designing PC boards, writing 8086 assembler, and using the 8255 PIA chip. You probably want to get to C-code and not just disassemble.