| 摘要 |
PURPOSE:To attain the matching connection even to a user system having any data transfer rate by providing a switching means for the standard of the data transfer rate to a bubble memory having a data buffer. CONSTITUTION:The actuation is started with a switch S1 turned on in case the data transfer rate of a user system has a lower speed than that of a bubble memory controller. Then a sequencer 22 delivers a write control signal to a register 20. The register 20 receives the control signal and sets an enable signal A(i) at 1 to deliver it to a TDRA control circuit 18. When data are stored to a data buffer 2, a drive magnetic field HR(iv) is started by the sequencer 22. Then the data in the buffer 2 are all written to a bubble memory by a timing clock (v) of a timing generator. When the user system can cope with the data transfer rate of the bubble memory controller, the switch S1 is turned off. Then data are written in parallel to the field HR. |
