| Component | Tests | Function |
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| Hard disk | Hard disk format | See “Hard Disk Diagnostics” |
| drives | Media analysis |
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| Performance |
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| Seek |
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| Read/verify |
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| Check test cylinder |
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| Force bad tracks |
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| Floppy disk | Diskette format | See “Floppy Disk |
| drives | Drive speed | Diagnostics” |
|
| Random read/write |
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| Sequential read/write |
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| Disk change line |
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| Keyboard | Controller | Tests the keyboard controller |
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| Scan/ASCII code | Tests the scan codes assigned |
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| to the keys |
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| Keyboard clock line | Tests the keyboard clock line |
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| Keyboard data line | Tests the keyboard data line |
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| Video | Adapter | Tests the display adapter |
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| memory |
|
| Attribute | Tests the display adapter |
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|
| attributes |
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| 80 x 25 display | Tests the 80 x 25 display |
|
| 40 x 25 display* | Tests the 40 x 25 display |
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| 320 x 200 graphics* | Tests the 320 x 200 graphics |
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|
| display |
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| 640 x 200 graphics* | Tests the 640 x 200 graphics |
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|
| display |
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| Page selection* | Tests the paging function of |
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| the adapter |
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| Color* | Tests the background and |
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| border color mapping |
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•Test appears only if you have installed a color monitor.
Performing System Diagnostics |