公开(公告)号：JPH04227531A

公开(公告)日：1992-08-17

申请号：JP6645491

申请日：1991-03-29

Applicant: ADVANCED MICRO DEVICES INC

Inventor： ROBAATO EMU PAARUMAN ,  BURAIAN DEI MATSUKUMIN ,  GUREN EI TAMURA ,  RAYU BESUJIESUNA ,  PUREMU SOOBERU ,  ROBAATO SHII SEIDEN ,  TOOMASU DABURIYU RINCHI

IPC: G06F7/00 ,  G06F7/38 ,  G06F7/483 ,  G06F7/527 ,  G06F7/53 ,  G06F7/57 ,  G06F7/76 ,  G06F9/38

Abstract: PURPOSE: To provide a floating point processor for pipeline-processing a series of calculation of a simple and compound arithmetic operation. CONSTITUTION: At least one arithmetic unit for executing arithmetic operation to an input operand given to the arithmetic unit, at least one accumulator for storing the result of the arithmetic operation executed by the arithmetic unit and a means for giving the result stored in the accumulator to the arithmetic unit are provided. The arithmetic operation is pipeline-processed by a stage deciding means for ordering the input operand, a result calculated by the arithmetic unit by using the input operand and a result calculated by the arithmetic unit by using the input operand and the accumulated operand through the floating point processor.