IBM PS/2 65 SX Hardware Maintenance Reference page 13

IBM PS/2 Model 65 SX HMR
ROM BIOS
1.2.4 ROM BIOS
|ROM BIOS contains the instructions and routines that control the keyboard,
|diskette drives, fixed disk drive, displays, and other major input/output
|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 BIOS.
1.2.4 - 1