Acer Altos R510, Service Manual

Page: 128 / 143

121 Chapter 4
2A G OFF A OFF Initializes different devices through DIM.
See DIM Code Checkpoints section of document for more
information.
2C G G R OFF Initializes different devices. Detects and initializes the video
adapter installed in the system that have optional ROMs.
2E G G A OFF Initializes all the output devices.
31 OFF OFF R A Allocate memory for ADM module and uncompress it. Give control
to ADM module for initialization. Initialize language and font
modules for ADM. Activate ADM module.
33 OFF OFF A A Initializes the silent boot module. Set the window for displaying text
information.
37 OFF G A A Displaying sign-on message, CPU information, setup key
message, and any OEM specific information.
38 G OFF R R Initializes different devices through DIM. See DIM Code
Checkpoints section of document for more information.
39 G OFF R A Initializes DMAC-1 and DMAC-2.
3A G OFF A R Initialize RTC date/time.
3B G OFF R A Test for total memory installed in the system. Also, Check for DEL
or ESC keys to limit memory test. Display total memory in the
system.
3C G G R R Mid POST initialization of chipset registers.
40 OFF R OFF OFF Detect different devices (Parallel ports, serial ports, and
coprocessor in CPU, … etc.) successfully installed in the system
and update the BDA, EBDA…etc.
50 OFF R OFF R Programming the memory hole or any kind of implementation that
needs an adjustment in system RAM size if needed.
52 OFF R G R Updates CMOS memory size from memory found in memory test.
Allocates memory for Extended BIOS Data Area from base
memory.
60 OFF R R OFF Initializes NUM-LOCK status and programs the KBD typematic
rate.
75 OFF A R A Initialize Int-13 and prepare for IPL detection.
78 G R R R Initializes IPL devices controlled by BIOS and option ROMs.
7A G R A R Initializes remaining option ROMs.
7C G A R R Generate and write contents of ESCD in NVRam.
84 R G OFF OFF Log errors encountered during POST.
85 R G OFF G Display errors to the user and gets the user response for error.
87 R G G G Execute BIOS setup if needed / requested.
8C A G OFF OFF Late POST initialization of chipset registers.
8D A G OFF G Build ACPI tables (if ACPI is supported)
8E A G G OFF Program the peripheral parameters. Enable/Disable NMI as
selected
90 R OFF OFF R Late POST initialization of system management interrupt.
A0 R OFF R OFF Check boot password if installed.