| 摘要 |
<p>PURPOSE:To enable to operate a data request signal and a sending end signal with the same signal, by constituting the system so that the request signal is not output even if the send-out queuing buffer is vacant, in case the display information exists, and after that, the request signal is output when the circuit sending-out buffer has been vacant. CONSTITUTION:In case a character to be sent out from the processing part 11 is gone, it is transferred to the buffer with the final character display, also the character is sent out to the circuit, and even if the send-out queuing buffer 12 becomes vacant, ready for sending is not informed but it is informed after both the buffer 12 and the circuit sending-out buffer 13 have become vacant. As a result, 2 reports informing that the sending-out buffer has been vacant (REQ1) and the transmission has been completed (REQ2) become 1 ready for sending (REQ) report, the processing part 11 is able to easily control to send out a data, and the processing capacity of the processing part can be elevated without increasing the interface line.</p> |
