The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2011
Filed:
Jul. 06, 2007
Ying-chih LU, Taipei, TW;
Ying-Chih Lu, Taipei, TW;
Inventec Corporation, Taipei, TW;
Abstract
A method for accessing a memory is provided. The method includes entering a memory accessing mode for updating a top of low memory (TOLM) value stored in a TOLM register in a chipset of a system with a highest memory address when a memory accessing command is received. The memory accessing command requests the utilization of a memory block in a memory of the system corresponding to an address space occupied by a memory-mapped input output (MMIO) function. The system then accesses the corresponding memory block in the memory according to the address space recorded in the memory accessing command. After the access is completed, the memory accessing mode is closed and the original TOLM value is written back to the TOLM register. Therefore, the present invention can access the 'MMIO memory block' to prevent a waste of the memory.