Instruction manual

3-12 / Service ControlWaveLP
Table 3-3 - POST Status Codes (Continued)
Hex Code
Status LEDs
1 2 3 4 5 6
Definition
45 1 0 1 0 0 0 checking for wrap, find total memory size.
46 0 1 1 0 0 0 write extended memory test patterns.
47 1 1 1 0 0 0 write conventional memory test patterns.
48 0 0 0 1 0 0 finding low memory size from patterns.
49 1 0 0 1 0 0 finding high memory size from patterns.
4A 0 1 0 1 0 0 check ROM BIOS data area again.
4B 1 1 0 1 0 0 check for <DEL>, clear low mem for soft reset.
4C 0 0 1 1 0 0 clearing ext mem for soft reset.
4D 1 0 1 1 0 0 saving memory size.
4E 0 1 1 1 0 0 on cold boot, display 1
st
64KB memtest.
4F 1 1 1 1 0 0 on cold boot, test all of low memory.
50 0 0 0 0 1 0 adjust memsize for 1K usage.
51 1 0 0 0 1 0 on cold boot, test high memory.
52 0 1 0 0 1 0 prepare for shutdown to real-mode.
53 1 1 0 0 1 0 saved regs & memsize, entering real-mode.
54 0 0 1 0 1 0 shutdown successful, restoring codepath.
55 1 0 1 0 1 0 disabling A20 line.
56 0 1 1 0 1 0 checking ROM BIOS data area again.
57 1 1 1 0 1 0 checking ROM BIOS data area some more.
58 0 0 0 1 1 0 clear the “Hit <DEL>” message.
59 1 0 0 1 1 0 test DMA page register.
60 0 0 0 0 0 1 verify from display memory (???).
61 1 0 0 0 0 1 test DMA0 base register.
62 0 1 0 0 0 1 test DMA1 base register.
63 1 1 0 0 0 1 checking ROM BIOS data area again.
64 0 0 1 0 0 1 checking ROM BIOS data area some more.
65 1 0 1 0 0 1 programming DMA ctrllrs 0 & 1
66 0 1 1 0 0 1 initializing INT ctrllrs 0 & 1.
67 1 1 1 0 0 1 starting keyboard test.
80 0 0 0 0 0 0 issuing reset cmd & clring output buffer
81 1 0 0 0 0 0 check for stuck keys & issue test cmd.
82 0 1 0 0 0 0 initializing circular buffer.
83 1 1 0 0 0 0 check for locked keys.
84 0 0 1 0 0 0 check for memsize mismatch.
85 1 0 1 0 0 0 check for pswd or bypass setup.
86 0 1 1 0 0 0 pswd checked. Do pgming before setup.
87 1 1 1 0 0 0 call the setup module.
88 0 0 0 1 0 0 back from setup, clr screen.
89 1 0 0 1 0 0 display power-on screen message.
8A 0 1 0 1 0 0 display “Wait…” message.
8B 1 1 0 1 0 0 do system & video BIOS shadowing.
8C 0 0 1 1 0 0 load standard setup params into BIOSDATA.
8D 1 0 1 1 0 0 check and initialize mouse.
8E 0 1 1 1 0 0 check floppy disks.
8F 1 1 1 1 0 0 configure floppy drives.
90 0 0 0 0 1 0 check hard disks.
91 1 0 0 0 1 0 configure IDE drives.
92 0 1 0 0 1 0 checking ROM BIOS data area again.
93 1 1 0 0 1 0 checking ROM BIOS data area some more.
94 0 0 1 0 1 0 setting base & ext mem sizes.
95 1 0 1 0 1 0 memsize adjusted for 1K, verifying disp mem.