1 overlined signal names indicate that the signal is true when the signal level is low.

    2 when the interface buffer is full except for the last character, busy will not be reset. busy will be reset when space is available again for least 256 characters in the interface buffer. while the printer is offline (stop mode) busy remains active until the printer enters the online state again.

    - maximal transfer speed

    the maximum throughput for data transfer is 5,000 characters per second.