Therefore, the throughput is roughly the same. EPP and ECP modes require additional hardware because the handshaking between the port and external device is done in hardware. These modes allow a much faster transfer rate because the computer uses most of it s time sending data. Next a brief description of each method will be given. The handshaking between the computer and external device is done in hardware.
Data strobe is deasserted.
Another feature of ECP is a realtime data compression. The speed comes from hardware handshaking. We require at least T1 rate. It seems that EPP is the better choice because it satisfies the bandwidth requirements and it is simpler. The test will involve transfering data from a computer to another computer via parallel port that is set to function in EPP mode.