69
SYSTEM
Code (hex)
Name
Description
1B-1E
Reserved
-
1F
Set EISA Mode
If EISA non-volatile memory checksum is good, executes EISA initialization.
If not, executes ISA tests and clears EISA mode flag. Tests EISA
Configuration Memory Integrity (checksum and communication interface).
20
Enable Slot 0
Initializes slot 0 (system board).
21-2F
Enable Slots 1-15
Initialize slots 1 through 15.
30
Size Base and Extended
Sizes base memory from 256KB to 640KB and extended memory above 1MB.
Memory
31
T
est Base and Extended
T
ests base memory from 256KB to 640KB and extended memory above 1MB
Memory
using various patterns. Note: This test is skipped in EISA mode and can be
skipped in ISA mode by pressing the <Esc> key.
32
T
est EISA Extended Memory
If EISA mode flag is set, then tests the EISA memory found in initialized slots.
Note: This test is skipped in ISA mode and can be skipped in EISA mode by
pressing the <Esc> key.
33-3B
Reserved
-
3C
-
Enables Setup.
3D
Initialize and Install Mouse
Detects whether or not mouse is present. If it is, initializes mouse and installs
interrupt vectors.
3E
Setup Cache Controller
Initializes the cache controller.
3F
Reserved
-
BF
Chipset Initialization
Programs chipset registers with Setup values.
40
-
Displays whether or not virus protection is enabled or disabled.
41
Initialize Floppy Drive and
Initializes floppy disk drive controller and any drives.
Controller
42
Initialize Hard Drive and
Initializes hard drive controller and any drives.
Controller
43
Detect and Initialize
Initializes any serial and parallel ports, and also the game port.
Serial/Parallel Ports
