Rom Bios/Post - IBM Personal System/2 CL57 SX Hardware Maintenance Reference

IBM PS/2 Model CL57 SX HMR

ROM BIOS/POST

1.2.3 ROM BIOS/POST
Read Only Memory - Basic Input/Output System (ROM BIOS) contains the
instructions and routines that control the keyboard, diskette drive, hard
disk drive, displays and other major I/O devices in the system. Some
adapters have their own ROM modules containing extended BIOS routines that
work with the system board ROM BIOS. The routines for performing the
power-on self-test (POST) are also contained in the ROM.
_ Copyright IBM Corp. 1991
1.2.3 - 1