On Tue, Apr 24, 2007 at 09:42:29PM +0200, Stefan Reinauer wrote:
- Ning (Michael) Qu quning@gmail.com [070424 21:30]:
And I check the new content after programming Savior. Only the last page are programmed. The total is 8 pages (512K), and only the content from 0x70000 is correctly programmed. What's the problem? Is there something wrong with flashrom?
Maybe some flash protection that "flashrom" does not know about. Can you check the datasheet?
Yes, this is consistent with the WP# pin being held low on the chip.
--8<-- Pm49LF002-004 V1.8.pdf p5 Write Protect: When pulled low, it enables the hardware write protection to the memory array except the top bootblock. When pulled high, it disables hardware write protection. -->8--
49LF004 has a 64kb top boot block.
If you have a continuity tester, please check if pin 7 (pins are numbered counter clockwise and pin 1 is the center pin on the side with a angled top edge) is connected to GND on the mainboard, and/or if there's a jumper.
You could also check if pin 7 is connected straight through on the BIOS savior. Maybe they changed their design for some unknown reason.
Oh, and did you try to flash a chip directly on the mainboard? Please try to write and verify using a few different files.
//Peter