Introduction
1230B0026701
1-13
Table 1-8 DIM Code Checkpoints
Checkpoint Description
2A
Initialize different buses and perform the following functions: Reset, Detect, and
Disable (function 0); Static Device Initialization (function 1); Boot Output Device
Initialization (function 2). Function 0 disables all device nodes, PCI devices, and PnP
ISA cards. It also assigns PCI bus numbers. Function 1 initializes all static devices
that include manual configured onboard peripherals, memory and I/O decode
windows in PCI-PCI bridges, and noncompliant PCI devices. Static resources are also
reserved. Function 2 searches for and initializes any PnP, PCI, or AGP video devices.
38
Initialize different buses and perform the following functions: Boot Input Device
Initialization (function 3); IPL Device Initialization (function 4); General Device
Initialization (function 5). Function 3 searches for and configures PCI input devices
and detects if system has standard keyboard controller. Function 4 searches for and
configures all PnP and PCI boot devices. Function 5 configures all onboard
peripherals that are set to an automatic configuration and configures all remaining
PnP and PCI devices.
Table 1-9 ACPI Runtime Checkpoints
Checkpoint Description
AC
First ASL check point. Indicates the system is running in ACPI mode.
AA
System is running in APIC mode.
01, 02, 03,
04, 05
Entering sleep state S1, S2, S3, S4, or S5.
10, 20, 30,
40, 50
Waking from sleep state S1, S2, S3, S4, or S5.
Table 1-10 Beep Codes
Number of Beeps
Description
1
Memory refresh timer error.
2
Parity error
3
Main memory read / write test error.
4
Motherboard timer not operational
5
Processor error
6
Keyboard controller BAT test error.
7
General exception error.
8
Display memory error.
9
ROM checksum error
10
CMOS shutdown register read/write error
