Analogue hard disk device for computer

Abstract

The invention discloses a simulated hard disk device for a computer, comprising a hard disk simulator and a hard disk head read-write controller, a hard disk simulator composed of a DSP chip, RAM, EEPROM, and an IDE40 interface, capable of receiving ATA in parallel with the original hard disk of the computer The bus command independently controls the hard disk, and then according to the bus command, it is limited by the partition read and write condition restriction table stored in the EEPROM with the address segment as the partition, and directly controls the head read and write controller between the hard disk head and the hard disk control circuit , to read and write the read and write current on and off, and also monitor the write signal of the EEPROM on the DSP chip by turning on and off the main power supply. Because the simulated hard disk device operates independently, and does not control the hard disk IO port, there is no time lag for reading and writing, and it can also prevent data changes and malicious programming on the hard disk. It is suitable for hard disk data security of high-speed computers, and the cost is low. Affected by defects in the original system.

Description

technical field [0001] The invention relates to the technical field of computer hardware, in particular to an analog hard disk device for a computer. Background technique [0002] Today, computer technology has been widely used in various fields of people's life, work and study, and its importance is self-evident. Computers are composed of hardware systems and software systems. The hardware system is the foundation, and the hard disk is the most important part of the computer. Storage devices, including the operating system, for various software, programs, and data need to be stored on the hard disk, and the hard disk is mainly composed of interface circuits and control circuits, through the bus connected to the input and output devices and the central processing unit. The IDE interface bus technology is the commonly used read-write and control technology at present. Although the known read-write control of the IDE bus technology uses the level control of 23 and 25 pins, it ...

AI Technical Summary

Problems solved by technology

Since some DSPs have programming ports that can directly control the EEPROM, and some do not directly control the programming port of the EEPROM, but rely on the on-chip EEPROM pre-stored program to read and write the off-chip EEPROM, so it is necessary to rely on 23, 25 pins It is very difficult to completely control the data reading and writing of the hard disk and the rewriting of the on-chip and off-chip EEPROM in the flat state

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