Here's a question to the hardware gurus.
Does anybody know why a one-way handshaking (SIO7) was used in SIO implementation? By design SIO mandates that all action must be initiated from the computer and peripherals must only answer when addressed by the computer and the computer expects all replies within strict predefined time periods. When this is the case, what's the real use of having a handshaking signal line on the bus? don't you think it is really redundant?
Does anybody know why a one-way handshaking (SIO7) was used in SIO implementation? By design SIO mandates that all action must be initiated from the computer and peripherals must only answer when addressed by the computer and the computer expects all replies within strict predefined time periods. When this is the case, what's the real use of having a handshaking signal line on the bus? don't you think it is really redundant?