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The datasheet indicates that the first two pages are write protected (0xFC).
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#PIN NUMBER FOR DELL WIRELESS 370 BLUETOOTH MINICARD CODE#
It's a DS2502 (Family code 0x09, the first byte of ROM). I wrote some code for my mbed and dumped the contents of the 1-wire EEPROM in my 240W power supply. Oh and the resistor doesn't really have a special value, it's just a pull-up to VCC since the bus is open-drain, and the devices can only pull it to ground. I'll have to build a 1-wire programmer since they are a little different. This is what I plan to test when I get a 330W supply. I have yet to get a 330W PS and see what the requested string is.Īn easy hack would be to reprogram the EEPROM in the 330W so that it returns 240 from the appropriate memory location. I don't know how the BIOS checks if its valid or not. In this case it gets "240" and is done.Ģ40 doesn't appear anywhere in the BIOS code, but it does appear in the BIOS settings screen. Then it starts reading out data as the master requests it. The slave then outputs the checksum of the address and command to the master for verification.
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Skip ROM means that it won't look for a specific ROM because there is only one device on the bus. I sniffed the 1-wire bus with my logic analyzer when I powered up the board, here is the results:ĠxF0 - Read memory command (if it's a 2501)ĠxFB - Should be a CRC of the previous three bytes I can't afford it right now, but I've been messing with the adapter problem.Īs we know, the power supply integrates a 1-wire EEPROM and the EC interrogates it to see if its valid or not. I'm interested in this because I want to try two 7970ms.