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Does anyone have a document describing the detailed meaning of each NAK response?
like:
4 = Not Allowed
5 = Transmission Error
...
also are there any cases a classic tag should NOT respond with anything?
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0x0 = Access denied for the specified address
0x1, 0x5 = CRC or parity error
0x2, 0x3, 0x6, 0x7, 0x8, 0x9, 0xB, 0xC, 0XD, 0xE, 0xF = NAK (reserved)
0x4 = Transaction underflow or overflow error 32bit signed integer
0xA = ACK
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perfect, thx.
i noticed for any command hex not documented you get a 0x4 NAK, except on a few tags i have where 0xC400 through 0xCF00 gives no response at all from the tag. i suspect these tags to be imitation 1k cards as most others respond with the 0x4.
anyone run into something similar and might know which mfg these might be from? I'd like to identify chips correctly in the pm3 reader cmds. besides, these chips may have additional features/commands...
(raw cmds sent after card selection)
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