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H8DGU(-F) Serverboard User’s Manual
Checkpoint | Code Description |
2Eh | Completed |
| the display memory read/write test next. |
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2Fh | The EGA/VGA controller was not found. The display memory read/write test is about to begin. |
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30h | The display memory read/write test passed. Look for retrace checking next. |
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31h | The display memory read/write test or retrace checking failed. Performing the alternate display |
| memory read/write test next. |
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32h | The alternate display memory read/write test passed. Looking for alternate display retrace |
| checking next. |
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34h | Video display checking is over. Setting the display mode next. |
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37h | The display mode is set. Displaying the power on message next. |
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38h | Initializing the bus input, IPL, general devices next, if present. See the last page of this chapter |
| for additional information. |
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39h | Displaying bus initialization error messages. See the last page of this chapter for additional |
| information. |
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3Ah | The new cursor position has been read and saved. Displaying the Hit <DEL> message next. |
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3Bh | The Hit <DEL> message is displayed. The protected mode memory test is about to start. |
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40h | Preparing the descriptor tables next. |
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42h | The descriptor tables are prepared. Entering protected mode for the memory test next. |
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43h | Entered protected mode. Enabling interrupts for diagnostics mode next. |
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44h | Interrupts enabled if the diagnostics switch is on. Initializing data to check memory wraparound |
| at 0:0 next. |
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45h | Data initialized. Checking for memory wraparound at 0:0 and finding the total system memory |
| size next. |
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46h | The memory wraparound test is done. Memory size calculation has been done. Writing patterns |
| to test memory next. |
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47h | The memory pattern has been written to extended memory. Writing patterns to the base 640 |
| KB memory next. |
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48h | Patterns written in base memory. Determining the amount of memory below 1 MB next. |
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49h | The amount of memory below 1 MB has been found and verified. |
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4Bh | The amount of memory above 1 MB has been found and verified. Checking for a soft reset and |
| clearing the memory below 1 MB for the soft reset next. If this is a power on situation, going to |
| checkpoint 4Eh next. |
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4Ch | The memory below 1 MB has been cleared via a soft reset. Clearing the memory above 1 MB |
| next. |
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4Dh | The memory above 1 MB has been cleared via a soft reset. Saving the memory size next. |
| Going to checkpoint 52h next. |
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4Eh | The memory test started, but not as the result of a soft reset. Displaying the first 64 KB memory |
| size next. |
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4Fh | The memory size display has started. The display is updated during the memory test. |
| Performing the sequential and random memory test next. |
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50h | The memory below 1 MB has been tested and initialized. Adjusting the displayed memory size |
| for relocation and shadowing next. |
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51h | The memory size display was adjusted for relocation and shadowing. |
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52h | The memory above 1 MB has been tested and initialized. Saving the memory size information |
| next. |
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53h | The memory size information and the CPU registers are saved. Entering real mode next. |
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