| 摘要 |
PURPOSE:To make the connection of a data bus line possible even if the transfer speed of the data bus line is low, by allocating sector addresses on one track of the magnetic disc device without order. CONSTITUTION:When the transfer speed is reduced to 1/n, addresses are allocated at the interval of n sectors. Contents of the sector address register and the output of ROM16 are compared with each other by address coincidence detecting circuit 10, and reset pulse 15 of sector address register 9 is not reset by index pulse 12 but is reset by output pulse 15 of least sector address detecting circuit 17. |
