| ??? 01/24/06 16:56 Read: times |
#108200 - Are you sure? Responding to: ???'s previous message |
Aitor Lecertua said:
The micro can execute code from this external memory and also it´s prepared to write in it using the data bus and other necessary signals. You do realise that the 8051 has no instruction to write to CODE space, don't you? Therefore, to write to your FLASH, you have to have some cunning scheme to make it appear in XDATA space... Also, with most Flash devices, you can't be executing code from the device at the same time as programming that chip. Therefore, you programming code has to reside in a different chip... If there is a similar application for another flash with a similar microcontroller I could change the routines to acceed this external flash. It's be just the standard programming algorithm for the particular FLASH device - see the manufacturer's website! |
