| ??? 03/15/11 17:23 Read: times |
#181591 - re: NOR Responding to: ???'s previous message |
Michael Karas said:
Is that external NOR Flash a parallel bus inteface part or a SPI Flash type thing?
If it is parallel so that you have the option of running the MCU code directly fetching from the part then you have two options. a) Choose a NOR Flash type that has the ability to allow reading from one sector while another is being erased/programmed. b) Write your Flash block write/erase routine as a small block of code that you can relocate to RAM to run it for the duration of the flash erase routine. It's standard parallel dataflash. The problem is simply one of getting the first program into it. I think I'll have to do a bootloader or something in FPGA fabric, something smart enough to check to see if the dataflash is valid, and if not, wait for new firmware to upload. It's a right royal PITA. -a |
| Topic | Author | Date |
| 8051 core in Actel ProASIC3L FPGA | 01/01/70 00:00 | |
| NOR Flash | 01/01/70 00:00 | |
| re: NOR | 01/01/70 00:00 | |
| PITA | 01/01/70 00:00 | |
| SPI vs parallel | 01/01/70 00:00 | |
| Using FPGA Resources | 01/01/70 00:00 | |
| Better with multiple, smaller, pages than one large. | 01/01/70 00:00 | |
FPGA rom | 01/01/70 00:00 | |
| What Triscend did | 01/01/70 00:00 |