ControlWave Instruction Manual (CI-ControlWave)
5.3.3 Port 80 Display Codes
The Port 80 Display shows two different types of codes. POST codes,
and run-time status codes.
Power-On-Self-
Test (POST)
Codes
When you first power up the ControlWave, or if you reset it using the
reset switch, the BIOS runs a power-on-self-test (POST) to test the
hardware. Normally, the POST codes pass by too quickly for you to see
them, and the system enters normal run time, or if the CPU is set for
force recovery mode, you see the code “86.” If there is a fault during the
POST process, see Table 5-3 for the 2-digit failure code.
Table 5-3. Port 80 POST Status Codes
HEX Code Definition
00 POST beginning.
01 CPU register test about to start.
02 NMIs are disabled; delay starts.
03 power-on delay finished.
04 kbd BAT done; reading kbd SYS bit.
05 disabling shadowing & cache.
06 calcing ROM cksum, wait kbd ctrllr.
07 cksum okay, kbd ctrllr free.
08 verifying BAT cmd to kbd ctrllr.
09 issuing kbd ctrllr cmd byte.
0A issuing kbd ctrllr data byte.
0B issuing pin 23, 24 blocking & unblocking.
0C issuing kbd ctrllr NOP cmd next.
0D testing CMOS RAM shutdown register.
0E checking CMOS cksum, updating DIAG byte.
0F initializing CMOS (if req’d every boot).
10 Init. CMOS status reg. for date/time.
11 disabling DMA, interrupt ctrllrs.
12 disabling Port B, disabling video display.
13 Init. board, start auto-mem detect.
14 starting timer tests.
15 testing 8254 T2, for spkr, part B.
16 testing 8254 T1, for refresh.
17 testing 8254 To, for 18.2 Hz.
18 starting memory refresh.
19 testing memory refresh.
1A testing 15usec refresh ON/OFF time.
1B testing base 64KB memory.
1C testing data lines.
1D currently loading the Boot Project.
20 testing address lines.
21 testing parity (toggling).
22 base 64KB mem read/write test.
23 system init before vector table init.
24 init vector table.
25 reading 8042 for turbo switch setting.
26 initiating turbo data.
5-22 Service & Troubleshooting Revised Nov-2010
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