부산대학교 도서관

Certain embodiments for modifying operation of ROM based boot code may include modifying a bootup sequence for boot code resident in a ROM within a network adapter chip (NAC). The bootup sequence may be modified during booting of the NAC using code patches in memory external to the NAC. The boot code may comprise ROM loader code and/or self-boot code in the ROM within the NAC. Execution of the self-boot code may comprise execution of code patches. The code patches may comprise initialization code patches and service code patches. The code patches may be executed in place of functions in the self-boot code or in addition to the functions in the self-boot code. Additionally, the code patches may be configured such that a function in the self-boot code may be effectively deleted where no corresponding code patch may be executed in place of the function.