HP Compaq dc7100 CMT User Manual

C-10 361834-001 Technical Reference Guide
Keyboard
C.2.5 Keyboard Commands
Table C-1 lists the commands that the keyboard can send to the system (specifically, to the
8042-type logic).
Note:
[1] Modes 2 and 3.
[2] Mode 1 only.
Table C-1.
Keyboard-to-System Commands
Command Value Description
Key Detection Error/Over/run 00h [1]
FFh [2]
Indicates to the system that a switch closure
couldn’t be identified.
BAT Completion AAh Indicates to the system that the BAT has been
successful.
BAT Failure FCh Indicates failure of the BAT by the keyboard.
Echo EEh Indicates that the Echo command was received by
the keyboard.
Acknowledge (ACK) FAh Issued by the keyboard as a response to valid
system inputs (except the Echo and Resend
commands).
Resend FEh Issued by the keyboard following an invalid input.
Keyboard ID 83ABh Upon receipt of the Read ID command from the
system, the keyboard issues the ACK command
followed by the two IDS bytes.

HP Compaq dc7100 CMT Specifications

General

Memory	Up to 4 GB DDR2 SDRAM
Operating System	Windows XP Professional
Processor	Intel Pentium 4
Chipset	Intel 915G Express
Storage	40GB to 160GB SATA HDD
Graphics	Integrated Intel Graphics Media Accelerator 900
Optical Drive	DVD-ROM, CD-RW, DVD+/-RW
Network	Integrated Gigabit Ethernet
Form Factor	Convertible Minitower
Expansion Slots	1 PCI Express x16, 3 PCI
Ports	USB 2.0, serial, parallel, PS/2, audio in/out