公开(公告)号：FR2831288B1

公开(公告)日：2004-12-10

申请号：FR0113412

申请日：2001-10-18

Applicant: ST MICROELECTRONICS SA

Inventor： ROCHE FRANCK ,  COLOMB ANDRE

IPC: G06F9/315 ,  G06F9/318 ,  G06F9/44

Abstract: A microprocessor includes internal registers, an arithmetic and logic unit, and reads a program memory and executes an instruction set stored therein. The instruction set includes at least one instruction for exchanging the contents of both memory locations. The microprocessor includes an additional internal register connected to an output of the arithmetic and logic unit, and transfers the contents of a first one of the memory locations to be exchanged into the additional register when executing the instruction set. The microprocessor further transfers the contents of a second one of the memory locations to be exchanged into the first memory location, and transfers the contents of the additional register into the second memory location.

公开(公告)号：FR2831288A1

公开(公告)日：2003-04-25

申请号：FR0113412

申请日：2001-10-18

Applicant: ST MICROELECTRONICS SA

Inventor： ROCHE FRANCK ,  COLOMB ANDRE

IPC: G06F9/315 ,  G06F9/318 ,  G06F9/44

Abstract: A microprocessor has internal registers (A, X, Y), an arithmetic logic unit (ALU) and reads a program memory to execute an instruction set having a supplementary instruction for commanding the exchange of the memory or register contents. The microprocessor has an additional internal register (17) with means for exchanging the contents of the second register with the internal register. The invention also relates to a microprocessor with two additional internal registers.