| 摘要 |
PURPOSE:To speed up a conversion processing by converting data in bidirectional data communication on the side of software and the side of hardware throught the use of ROM. CONSTITUTION:A circuit consists of ROM 2 converting a control data signal 101 from the side of software 1, a buffer 3 output-controlling conversion data 102 to DPRAM 4, DPRAM 4 which temporarily stores conversion data 102 from the buffer 3 and conversion data 103 from the side of hardware 7 and outputs them to the side of hardware 7 and ROM 6, ROM 6 inputting conversion data 102 from DPRAM 4 and converting it into the control data signal and a buffer 5 converting and controlling the control data signal which ROM 6 outputs to the side of software 1. Then, the circuit functions as the signal conversion of the bidirectional signal between the side of software 1 and the side of hardware 7 and as a memory. |
