ROM scan memory expander

Details ROM scan memory expander ROM scan memory expander

2007-10-16

2007-10-16

Kim, Matthew (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S170000, C713S002000

Reexamination Certificate

active

10929323

ABSTRACT:
A method and system for booting up multiple PCI peripheral devices, such that the number of bootable PCI peripheral devices is not limited by the amount of computer system memory that is dedicated to storing executable boot code for the peripheral devices. The executable boot code is stored on a Read Only Memory (ROM) on each peripheral device. When a new PCI peripheral device begins to boot up, a check for available memory space in a ROM scan memory address space is performed. If there is not enough available room in the ROM scan memory address space for the new device's executable boot code, then a ROM scan detection logic pages an image of another peripheral device's executable boot code out of the ROM scan memory address space before storing the new device's executable boot code into the ROM scan memory address space.

REFERENCES:
patent: 2005/0182913 (2005-08-01), Zimmer
Introduction to PCI-Express: the AGP8X Replacement, PCstats.com Newsletter, 2004.

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