(Slink-e 2.0 and above only)
Binary: [0 p1 p0 1 1 1 1 1] [0 0 0 0 0 1 0 0] [bit_count] [bits]
This command functions like a Send Port Message command, except that it specifies from 1 to 7 bits of port message data, whereas Send Port Message specifies whole bytes. It works only on an S-link port. (Other ports' port message data is always whole bytes). You need this if you want to send a port message that has an odd (not multiple of 8) number of bits.
For example, to send a 43 bit port message, send a Send Port Message command with 5 bytes of port message data, followed by a Send S-link Odd Bits command with 3 bits, followed by a Send Port Message End command.
The "bit_count" byte specifies the number of bits of port message data, in pure binary. The "bits" byte contains those bits, but I don't know how (presumably either in the most significant or least significant bits).
There is no response.