I'm trying to determine whether or not we can easily write to the 2 MB ROM. I picture placing a linux kernel and a cramfs on it for a diskless MP3 player.
Anyhow, I think I've been able to figure out how some of the ROM is wired, but I'm not getting the results I expect.
Can I get someone to perform a test for me?
First, download uniflash 1.30 from http://www.pppr.sk/rainbow/download/uf130.zip This version is important. It has a fix related to specification of a base address.
Then, from DOS, execute the commands:
I2C 88 22 0
I2C 88 21 80
Finally, execute uniflash with the following command:
uniflash -base 800000
Is uniflash able to recognize the flash on your unit?