G - Physics – 06 – F
Patent
G - Physics
06
F
354/230.8
G06F 9/30 (2006.01)
Patent
CA 1068006
ABSTRACT OF THE DISCLOSURE Two types of instructions are used in a computer which includes function units interconnected by a bus system. The first type selects one function unit and orders the performance of an internal function. The second type selects two function units for the transfer of data between them through the bus system and orders the data receiving function unit to perform an internal function for which the transferred data are used. The execution period of an instruction of said second type comprises a first part during which the first function unit is ordered to transmit data, a second part during which said data are transferred to the bus system and a third part during which the other function unit receives the transferred data. The bus system makes said second and third execution period parts coin- cide. The instructions are successively obtained by a fixed- cycle reading and transferred from an instruction memory through the bus system to the function units. The execution period for an instruction of the first type and the first part of the exec- ution period for an instruction of the second type respectively are finished during the present read phase. The coinciding execution period parts for an instruction of the second type are finished during the read phase of the following instruction.
252516
Carlsson Karl-Johan W.
Sjoqvist Erik I.
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