在 2013年4月2日 星期二 15:19:25，Stefan Tauner 写道： > > Thank you very much for this information. I had to guess the device IDs > because they are not mentioned in the datasheet. > The AT25F1024A has 0x60, the AT25F512A has 0x65, the AT25F025B has > 0x6500... but apparently assuming at least some sanity has failed to > reflect the truth. > > So, according to your verbose log your AT25F512 has the same ID as the > AT25F1024A (according to its datasheet). *sigh* > Before I'll make some changes to the code I'll try to find someone with > a AT25F1024 chip to test.
Bought an AT25F1024(without A) recently and tested. http://paste.flashrom.org/view.php?id=1620 Found a PCN from Atmel, stating that AT25F512's device code is 0x60, and the new AT25F512A's is 0x65: http://www.baite.com.hk/uploadFiles/service/SB_serial_mod_PCN_25F512.pdf Another interesting thing is that my AT25F512 can actually hold 128KBytes of data. I generated the test data from /dev/urandom and confirmed that it contains no repetitive patterns with lzma -9 (a fake 128KB "random" data file made up with two 64KB ones with same content can be compressed into ~65KB while mine can not). All bytes seems to be functional, I had zeroed out and erased the whole chip and I got 128KB 0x00 an 128KB 0xff. After a power cycle the random data written to the chip can be preserved. Maybe some day I will buy a new & original AT25F512 and test whether it can hold 128KB data. Photos of the chips: https://dl.dropboxusercontent.com/u/4389799/P1130184.JPG https://dl.dropboxusercontent.com/u/4389799/P1130188.JPG _______________________________________________ flashrom mailing list [email protected] http://www.flashrom.org/mailman/listinfo/flashrom
