Appendix A System Interface Description
There are two system interfaces:
Sone serial interface with
Sone Parallel Centronics interface.
The interfaces can be operated in three different modes:
Sserial interface active
Sparallel interface active
Sboth interfaces active in shared mode
The following chapter gives an overview about interface characteristics, control signals, protocols, and cabling.
Any change to the operation mode (SERIAL, PARALLEL or SHARED) and to the size of the interface buffer is possible only when the interface buffer is completely empty of data.
