CN102662691A

CN102662691A - New method for self extending memory

Info

Publication number: CN102662691A
Application number: CN2012100691458A
Authority: CN
Inventors: 周国锋
Original assignee: SUZHOU YOUKANG COMMUNICATION CO Ltd
Current assignee: SUZHOU YOUKANG COMMUNICATION CO Ltd
Priority date: 2012-03-16
Filing date: 2012-03-16
Publication date: 2012-09-12

Abstract

The invention aims at providing a new method for self extending a memory. The fundamental principle of the new method is that the method comprises the following steps: storing a part of non-initiation code content in the Boot memory image into an additional memory medium (like hard disk), and then reading and processing the part of non-initiation code content as required when the initiation codes in the Boot memory image are in operation so as to realize support on large-capacity Boot memory image program, thereby realizing the new method for self extending memory.

Description

A kind of new method of autonomous exented memory

Technical field

The invention relates to a kind of new method of autonomous exented memory.

Background technology

People to computing machine each item function require increasingly high; Impelled the complexity of computer software constantly to increase; This directly makes software become more and more huger, and this problem perhaps is nothing for the storage mediums such as hard disk that calculate with 10G, 100G at present, but for some more special application scenarios; As be stored in the program (like remote activation card, encrypted card, hard disk reduction card etc.) in the PCI exented memory, or comparison stubborn problem.With regard to this series products of hard disk reduction card, manufacturer wants in intense market competition, to take advantage, and means and strategy are a lot; Wherein increase product function; To realize the differentiation of product, give prominence to the advantage of self, be a kind of very feasible way; The hard disk reduction that adds network function (being used for management, backup etc.) like the hard disk data protection that occurs on the market blocks, and is exactly a kind of relatively more successful representative.Yet owing to receive the restriction of PCI exented memory capacity (generally all in the 64K byte) and price, some good ideas implement difficult.

Summary of the invention

Be above purpose; The invention provides the method for a kind of storage and operation high capacity PCI exented memory; This method comprises: when writing PCI exented memory program; In as PCI exented memory setup code, add the function that reads and handle data in the secondary storage medium; Generate initialization section and non-initialization section binary result file by normal PCI exented memory development process respectively again, this setup code part still is cured in the storage medium of PCI exented memory, and this non-setup code content is partly write in the secondary storage medium; Setup code in this PCI exented memory is called when operation, reads as required to be stored in the content in the secondary storage medium and to handle, to accomplish the support to high capacity PCI exented memory.

Description of drawings

With reference to following detailed description and accompanying drawing, can better understand of the present invention about structure and implementation method with and purpose, characteristic and advantage.

Fig. 1 is a kind of new method of autonomous exented memory

The practical implementation method

In following detailed description, described specific details and the present invention has comprehensively been understood so that provide.Yet the professional and technical personnel will appreciate that the present invention also can use other similar details to implement.

Although the invention is not restricted to this,, a kind of that hard disk is following as the implementation step of storage and operation high capacity PCI exented memory secondary storage medium as a concrete embodiment of the present invention:

Knowledge according to fdisk; In 63 sectors of the O cylinder O magnetic track of hard disk; Except that the 1st sector is used for MBR (MBR), remaining 62 sector all keep need not, for simple process; We can use these 62 sectors (about 32K byte), are used for storing the non-setup code partial content of PCI exented memory.

When writing PCI exented memory program; In this PCI exented memory setup code, add the function of interrupting reading and handling hard disc data through standard BIOS; With visit and the processing capacity of reality to non-setup code partial content in this PCI exented memory in the hard disk; Initialization section content with the PCI exented memory mirror image that generates is cured in the PCI exented memory again, and the content of non-setup code part is write in 62 sectors of hard disk.

When the initialize routine in this PCI exented memory by computer loads and when operation, just can indulge to read as required being stored in the content in the hard disk sector and handling, completion is to the support of high capacity PCI exented memory.

Interrupt int 13h through BIOS, directly the reference of the partial function property code of access hard disk sector as follows: mov ax, 0202h; 2 expressions are read in the high byte, and 3 expressions are write; Represent sector number in the low byte; 202 just represent to read No. 2 the sector

Mov bx, lOOOh; The memory address that is used for the storage read-write data

Mov cx, 1; Sector number

Mov dx, 80h; 80 expression Primary Hard Drives, 81 expressions are from hard disk, and 0 representes floppy disk etc.

Int 13h; Standard BIOS disk funcall

Though here declarative description certain this characteristic of the present invention and a kind of implementation method, for the professional and technical personnel, many modifications, replacement, variation and equivalent substitution will appear.Therefore, protection scope of the present invention is as the criterion by the scope of appended claim.

Claims

1. the new method of an autonomous exented memory; This method may further comprise the steps: when writing PCI expansion ROM program; In as PCI expansion ROM setup code, add and read and handle the function of data in the hard disk and the information of Data Position; And be used for storing the information of hard disk the 0th cylinder O magnetic track 2-63 sector position of the non-setup code partial content of PCI expansion ROM mirror image; Generate initialization section and non-initialization section binary result file by normal PCI expansion ROM development process respectively again; This setup code part still is cured in the storage medium of PCI expansion ROM, and this non-setup code content is partly write in the secondary storage medium;

2. the new method of an autonomous exented memory; It is characterized in that: the setup code in this PCI expansion ROM is called when operation, reads as required to be stored in the content in the secondary storage medium and to handle, to accomplish the support to high capacity PCI expansion ROM.