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Recent content by addn

  1. A

    Looking for the algorithm of radix4 divider

    hi Can anyone provide the algorithm of radix4 divider?? thanks.
  2. A

    Help me modify divide by 2 counter code to divide by 4 counter

    divide by 2 counter signal q : std_logic_vector(1 downto 0); ................ begin process(clk_i,reset) begin if (reset = '0') then q <="00"; elsif (clk_i'event and clk_i = '1') then q <=q+1; end if; end process ; clk_div2 <= q(0); clk_div4 <= q(1);
  3. A

    How to decide on counting direction in a clock?

    counting direction hi,anoop12 had you try my way in your last post"dual clock counter"?
  4. A

    Errors in dual clock counter code in VHDL

    dual clock counter hi, about the flag you need two negative edge D-FF with asynchronous reset D-FF1:D<->'1',CLK<->I_UP,/RESET<->I_DOWN D-FF2:D<->'1',CLK<->I_DOWN,/RESET<->I_UP and then up_down_flag<=Q1 AND NOT Q2;
  5. A

    Errors in dual clock counter code in VHDL

    Re: dual clock counter hi, you can try that add internal node signal up_down_clk:std_logic; signal up_down_flag:std_logic; then up_down_clk<=I_UP AND I_DOWN; up_down_flag<=............................... process(up_down_clk,I_CLR,I_LOAD_N,up_down_flag) begin if (I_CLR='1') then...
  6. A

    I2C slave code needed

    hi the FPGA4fun can give you some ideal and concept with how to get start a simple i2c slave. if you realize it,you can write the code all your own.
  7. A

    I2C slave code needed

    hi https://www.fpga4fun.com/
  8. A

    Looking for VHDL or Verilog code for 8259a interrupt controller

    Re: 8259a hi i need 8259 vhdl code,too but i can not find code on www.opencores.org please tell me how to find it or search it on that sit thanks
  9. A

    What does tCL parameter mean in 8254 ?

    hi, what does 8254 parameter tCL mean? can we set lock command or read back to latch count at period of tCL min~max? what is the structure of OL(output latch),does it synchr to clk? thanks
  10. A

    Help needed in Parallel CRC implementation in VHDL(urgent)

    pck_crc32_d8 hi please reference following link https://www.easics.be/webtools/crctool
  11. A

    pronunciation question

    hi, I type "q-u-a-r-t-u-s" but the EDAboard system auto chang to qu(at)rtus thanks
  12. A

    pronunciation question

    hi, what are the pronunciation of "Quartus" and "Avalon"? thanks
  13. A

    NIOS2 avalon bus user peripherals question

    avalon nios2 hi, i have completed a simple test of 8 bit output port (Custom Peripherals) and embedded in NIOS2 system how to access it by NIOS2 IDE C thanks
  14. A

    AT29C256 5V Chip Erase

    hi budhy I have another question between (prgram mode) and (5V chip erase mode). from following table the /CE,/OE,/WE,Ai of two mode are the same. how does it to recognize (prgram mode) or (5V chip erase mode) thanks
  15. A

    AT29C256 5V Chip Erase

    at29c256 chip erase Hi can anyone tell me how to use 8051 erase the AT29C256 by (5V Chip Erase) mode thanks
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