| 摘要 |
PURPOSE:To reduce the number of steps of micro instructions by providing an address supply means which reads out one following address filed on a basis of an address selection field and supplies it to the second storage means as address information. CONSTITUTION:When the fourth field 3d (one bit) of a control memory read register 3 is '0', contents of a following address field NA in control information outputted from a control decoding memory 6 are stored in a control decoder address register 9. When the fourth field 3d is '1', contents of the third field 3c of the control memory read register 3 are stored in the control decoder address register 9. As the result, the control decoding memory 6 is operated as not only a mere decoder of a control memory 2 but also a control memory operated by itself. |
