Intel S875WP1LX Specification page 103

S875WP1-E TPS
Code
2F EGA/VGA not found. Display memory R/W test about to begin.
30 Display memory R/W test passed. About to look for the retrace checking.
31 Display memory R/W test or retrace checking failed. To do alternate Display memory R/W test.
32 Alternate Display memory R/W test passed. To look for the alternate display retrace checking.
34 Video display checking over. Display mode to be set next.
37 Display mode set. Going to display the power-on message.
38 Different buses init (input, IPL, general devices) to start if present.
39 Display different buses initialization error messages.
3A New cursor position read and saved. To display the Hit <DEL> message.
40 To prepare the descriptor tables.
42 To enter in virtual mode for memory test.
43 To enable interrupts for diagnostics mode.
44 To initialize data to check memory wrap around at 0:0.
45 Data initialized. Going to check for memory wrap around at 0:0 and finding the total system memory size.
46 Memory wrap around test done. Memory size calculation over. About to go for writing patterns to test
memory.
47 Pattern to be tested written in extended memory. Going to write patterns in base 640k memory.
48 Patterns written in base memory. Going to find out amount of memory below 1M memory.
49 Amount of memory below 1M found and verified. Going to find out amount of memory above 1M memory.
4B Amount of memory above 1M found and verified. Check for soft reset and going to clear memory below 1M
for soft reset. (If power on, go to check point # 4Eh).
4C Memory below 1M cleared. (SOFT RESET) Going to clear memory above 1M.
4D Memory above 1M cleared. (SOFT RESET) Going to save the memory size. (Go to check
point # 52h).
4E Memory test started. (NOT SOFT RESET) About to display the first 64k memory size.
4F Memory size display started. This will be updated during memory test. Going for sequential and random
memory test.
50 Memory testing/initialization below 1M complete. Going to adjust displayed memory size for
relocation/shadow.
51 Memory size display adjusted due to relocation/ shadow. Memory test above 1M to follow.
52 Memory testing/initialization above 1M complete. Going to save memory size information.
53 Memory size information is saved. CPU registers are saved. Going to enter in real mode.
54 Shutdown successful, CPU in real mode. Going to disable gate A20 line and disable parity/NMI.
57 A20 address line, parity/NMI disable successful. Going to adjust memory size depending on
relocation/shadow.
58 Memory size adjusted for relocation/shadow. Going to clear Hit <DEL> message.
59 Hit <DEL> message cleared. <WAIT...> message displayed. About to start DMA and interrupt controller test.
60 DMA page register test passed. To do DMA#1 base register test.
62 DMA#1 base register test passed. To do DMA#2 base register test.
65 DMA#2 base register test passed. To program DMA unit 1 and 2.
66 DMA unit 1 and 2 programming over. To initialize 8259 interrupt controller.
7F Extended NMI sources enabling is in progress.
80 Keyboard test started. Clearing output buffer, checking for stuck key, to issue keyboard reset command.
81 Keyboard reset error/stuck key found. To issue keyboard controller interface test command.
82 Keyboard controller interface test over. To write command byte and init circular buffer.
83 Command byte written, global data init done. To check for lock-key.
Revision 4.0
Description of POST Operation
Error Reporting and Handling
91