One of possibility I had in mind is token ring with
differential I/O, minimal signaling (maybe clock only)
and variable data bit length in terms of 2^n so it could
be 1-bit 2-bit etc up to 32-bit bus.
mixed bit width devices can co-exist in the same ring but then for
example if a 1-bit device is inserted inbetween A and B 32-bit nodes
then 32-bit node A must be serialize traffic to 1-bit and
32-bit node B must de-serialize it to 32-bit again.
This will introduce latency and reduce speed but will be
flexible to let it work. When number of devices are small
like 2-8 it is very efficient reliable and low cost
Token ring has advantage to re-generate signal quality after
each node so it should be less prone to noise and it makes
node wiring simple and no additional chips for bus transievers,
hubs and switches.
One of possibility I had in mind is token ring with differential I/O, minimal signaling (maybe clock only) and variable data bit length in terms of 2^n so it could be 1-bit 2-bit etc up to 32-bit bus.
mixed bit width devices can co-exist in the same ring but then for example if a 1-bit device is inserted inbetween A and B 32-bit nodes then 32-bit node A must be serialize traffic to 1-bit and 32-bit node B must de-serialize it to 32-bit again.
This will introduce latency and reduce speed but will be flexible to let it work. When number of devices are small like 2-8 it is very efficient reliable and low cost
Token ring has advantage to re-generate signal quality after each node so it should be less prone to noise and it makes node wiring simple and no additional chips for bus transievers, hubs and switches.