User’s Manual
114
ECM-3410/3410L/3410N User’s Manual
Code (Hex)
Name
Description
B
Test CMOS RAM Checksum
Test CMOS RAM Checksum, if bad, or insert key
pressed. Load defaults.
C
INITIALIZE KEYBOARD
DETECT TYPE OF KEYBOARD CONTROLLER
(OPTIONAL).
Set NUM_LOCK status.
D
INITIALIZE VIDEO INTERFACE
Detect CPU clock.
Read CMOS location 14h to find out type of video in
use.
Detect and initialize Video adapter.
E
Test Video memory
Test video memory, write sign-on message to
screen.
Setup shadow RAM – Enable shadow according to
Setup.
F
Test DMA Controller 0
BIOS Checksum test.
Keyboard detect and initialization.
10
Test DMA Controller 1
11
Test DMA Page Registers
TEST DMA PAGE REGISTERS.
12-13
Reserved
14
Test Timer Counter 2
Test 8254 Timer 0 Counter 2.
15
Test 8259-1 Mask Bits
Verify 8259 Channel 1 masked interrupts by
alternately turning off and on the interrupt lines.
16
Test 8259-2 Mask Bits
Verify 8259 Channel 2 masked interrupts by
alternately turning off and on the interrupt lines.
17
Test Stuck 8259’s Interrupt Bits
Turn off interrupts then verify no Interrupt mask
register is on.
18
Test 8259 Interrupt Functionality
Force an interrupt and verify the interrupt occurred.
19
Test Stuck NMI Bits (Parity / IO Check)
Verify NMI can be cleared.
1A
DISPLAY CPU CLOCK
1B-1E
RESERVED
1F
SET EISA MODE
If EISA non-volatile memory checksum is good,
execute EISA initialization. If not, execute ISA tests a
clear EISA mode flag.
Test EISA Configuration Memory Integrity
(checksum & communication interface).
20
Enable Slot 0
Initialize slot 0 (System Board).
21-2F
Enable Slots 1-15
Initialize slot 1 through 15.
30
Size Base and Extended Memory
Size base memory from 256K to 640K and extended
memory above 1MB.
