VeeeHDL

Thank you so much, I have one more question:. Can I use the non volatile flash on the FPGA itself? I know that there is XCF02S PROM on the FPGA. Can I use it deviated from its original purpose (instead of holding the bitstream I want it to hold my 256kB .ROM file ) and more importantly, do I have direct access to it ? Block ram on my fpga is really small and can't hold 256kB of data at one go (72kb of block ram, i.e., very very small). This is really annoying. Basys 3 has flash while basys2 doesn't. I am thinking about this because usb interface with a usb stick appeared really complex, I don't want to bother with that path. I can use the volatile fpga memory mode to program my bitstream instead of prom non volatile programming mode, I can live with that. Datasheet for my basys2 https://docs.xilinx.com/api/khub/documents/UOAB20VKtExyleq1j4~Z_g/content?Ft-Calling-App=ft%2Fturnkey-portal&Ft-Calling-App-Version=4.0.26&filename=ds001.pdf&download=true dsheet for the basys3 board that I don't have: https://docs.xilinx.com/api/khub/documents/2Q1ujx53XGev4neIVdL3hw/content?Ft-Calling-App=ft%2Fturnkey-portal&Ft-Calling-App-Version=4.0.26&filename=ds312.pdf&download=true Actually SD card really seems fit for this job. It is also SPI interface. So my job will be read from one and then mirror it to the eeprom. But I am unsure whether the file system level knowledge will be required here? Should I format the sdcard as simple fat32, write the source 256kB.rom file to it and all will be okay, I will be allowed to read it without decryption?

Yes, I want to program an EEPROM with my Basys2 Spartan 3E board. Is this possible? I want to dump a few megabytes of data into an EEPROM flash. (Particularly this 8 pin flash of a "bios chip" of a motherboard: https://www.winbond.com/productResource-files/Winbond_Serial_Flash_Product Brief.pdf For this project , I am thinking of reading the Bios.bin dump from a FAT32 Flash drive stick and send the data from USB use my FPGA as a bridge to convert it to what the EEPROM would understand and have a DONE led go high when the process completes. Am I on the right track? Are there any example VHDL codes utilizing reading from flash drive and/or writing to an 8-pin EEPROM block? I have searched for this a lot but no luck. Thanks all for your attention.