CPU - (CPU.EXE)
The CPU test checks the general purpose registers by copying a bit pattern through each register. Then a test of the Translation Lookaside Buffer is performed.
DOS Parameter | Explanation |
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none |
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Valid Keystrokes | Action |
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n/a | The CPU test ignores the keyboard. | |
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Failure Message | Error Code | Meaning |
User Aborted | 1 | User aborted test. |
Failed | 2 | The register test failed. |
Failed | 3 | The CPU is in protected |
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| mode, must clean boot. |
Failed | 4 | The Translate Lookaside |
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| Buffer test failed. |
RAM - (RAM.COM)
The RAM test checks the base 640K of RAM first, then the remainder of memory.
DOS Parameter |
| Explanation |
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none |
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Valid Keystrokes |
| Action |
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Backspace |
| Aborts the test, all other keys are flushed. | |
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Failure Message |
| Error Code | Meaning |
User Aborted |
| 1 | User aborted test. |
Failed |
| 3 | Could not move to new code |
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| segment. RAM is bad. |
Failed |
| 4 | CPU protected mode bit set, |
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| must clean boot. |
ROM - (ROM.EXE)
The ROM test performs a
DOS Parameter Explanation
none
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