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Ordered the descritpion of bytes to match the data-message
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AA AA are the 2 least significant bytes of the absolute memory address of the first byte of data returned (the high byte of the offset is not returned, and neither is whether it is a register or memory that is being used. Thus, this must be known from the read request). +S (high nybble of SE) is the size in bytes, minus one, for the current data packet. This is 0xf (16 bytes) for all but the last packet, where it might be less if the requested number of bytes is not a multiple of 16. The DD bytes are the data, padded with zeroes to 16 bytes. If more than 16 bytes are requested, multiple packets will be received, with AA AA addresses increasing by 16 each time.+
+
BBBB is the core [[#Buttons | Buttons]] data.
BBBB is the core [[#Buttons | Buttons]] data.
−S (high nybble of SE) is the size in bytes, minus one, for the current data packet. This is 0xf (16 bytes) for all but the last packet, where it might be less if the requested number of bytes is not a multiple of 16.
E (low nybble of SE) is the error flag. Known error values are 0 for no error, 7 when attempting to read from a write-only register or an expansion that is not connected, and 8 when attempting to read from nonexistant memory addresses.
E (low nybble of SE) is the error flag. Known error values are 0 for no error, 7 when attempting to read from a write-only register or an expansion that is not connected, and 8 when attempting to read from nonexistant memory addresses.
−AA AA are the 2 least significant bytes of the absolute memory address of the first byte of data returned (the high byte of the offset is not returned, and neither is whether it is a register or memory that is being used. Thus, this must be known from the read request).
+The DD bytes are the data, padded with zeroes to 16 bytes. If more than 16 bytes are requested, multiple packets will be received, with AA AA addresses increasing by 16 each time.
== 0x22: Acknowledge output report, return function result ==
== 0x22: Acknowledge output report, return function result ==