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Recent content by Elnegm

  1. E

    Can i fix my spartan 3a starter kit after i plug to it 12V?

    hi i plugged 12 v dc source to my spartan 3a starter kit , what i saw that the LP3906 voltage regulator has burned so I'll try to fix it,Are there other thing to do to fix the board, if any one faced this kind of problems please replay as soon as possible Thanks in advance
  2. E

    What is the differance between PHY chip and USB tranciever

    Hi In usb core what is the function of the PHY interface and aren't have functions of the USB tranciever ic?? Thanks in advance
  3. E

    USB transceiver that converts from board level to D+ and D- levels

    Hi Is there is a tranciever chip for USB that convert from board level to D+ and D- level?? Thanks in advance
  4. E

    Long time Synthesis in ISE

    I'm using FPGA Xilix virtex 2 pro FG45 and Xilinx ISE The problem that ISE when i Synthesis my verilog core which is 8051 it continue Synthesis,it Synthesis for along time and didn't fiinsh,the module that ISE still Synthesis and didn't fininsh is the ROM,so i can't Synthesis the core ,Any...
  5. E

    Using MOVX in c code in keil (8051)

    movx 8051 I want to use MOVX assembly instruction in my c code,i made the way that i create separate assembly file and make public function then define it as extern in my c code but when i debyg this code when the step at the line to excute the function ,LCALL instruction excuted to the start...
  6. E

    What exactly hex file contain

    Hi I knew before that hex file contain contents in program memory but lately i need to unsert hex file in verilog imlemented ROM but i discovered that hex file is not exactly the ROM it contain additional data Is anybody has an idea how can i extract program memory byte from hex file Thanks in...
  7. E

    Convert hex file of 8051 ROM to form used in verilog

    Hi Ineed aprogram that covert hex file generated from kiel to a form that include full content of program memory ,so that it's easy to implement in my 8051 ROM module. Thanks in advance
  8. E

    mapping external ROM memory in 8051

    no comments??????
  9. E

    mapping external ROM memory in 8051

    I want to ensure some knowladge i gained about 8051 first program counter is 15 bit so if pc less than 4096 we read from internal ROM but if pc larger than 4096 so PSEN is asserted high and we read from external ROM , and if in the program we asserted PSEN so we read from external ROM even if...
  10. E

    Data transfer to FPGA from computer through serial port.

    the signal reset_ibuf has no load. I think in your FPGA you to implement UART module to deal with the COM port in PC if ypu will send data from FPGA to PC,but if the FPGA only reciecve data from PC ,so you will need small FSM on your FPGA to recieve UART frame and extract data from it and but...
  11. E

    Implementation of 8051 with eliminating some instructions

    Hi I want to implement 8051 but want to eliminate instructions for mapping both code and data memory ,so for peaple who has experiance with 8051 for external code memory if i write c code can i guarante that considering assembly code will not use instructions for external mapping just by...
  12. E

    Full schematic description of 8051 core

    Hi I want full description of 8051 core ,so that i can implement verilog ip core for that microprocessor
  13. E

    Simulation using modelSim

    Hi I'm abeginner with verilog and i use FPGA advantage and modelSim when i want to simulate the following code output counte give me unknown Is there is setting in ModelSim i have to set in order to simulate correctly? module firstseq (clk, reset, enable, count); input clk, reset, enable...
  14. E

    serial port with windows XP

    Ok i solved this problem but an exception has occured telling An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in MyConsoleApplication.exe Additional information: COM object with CLSID {648A5600-2C6E-101B-82B6-000000000014} is either not valid or not...
  15. E

    serial port with windows XP

    Thanks mobile-it,but i made the steps but an error occur in visual basic application by the following messege"Namespace or type 'Data' in the project-level Imports 'System.Data' cannot be found." and i have no idea about visual basic so is any one can handle this error messege. Thanks in advance
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