A |
COMMON COMMAND SET AND DISK OPERATION
| BYTE OFFSET | VALUE | COMMENTS | |
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8 | (Note 4) | Alternate tracks per volume (MSB) | ||
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9 | (Note 4) | Alternate tracks per volume (LSB) | ||
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| A | (Note 5) | Sectors per track (MSB) | |
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| B | (Note 5) | Sectors per track (LSB) | |
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| C | (Note 6) | Bytes per sector (MSB) | |
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| D | (Note 6) | Bytes per sector (LSB) | |
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| E | (Note 7) | Interleave (MSB) | |
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| F | (Note 7) | Interleave (LSB) | |
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10 | (Note 8) | Track skew factor (MSB) | ||
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11 | (Note 8) | Track skew factor (LSB) | ||
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12 | (Note 9) | Cylinder skew factor (MSB) | ||
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Mode Select Parameter List: Page 3 Parameters for Winchester drives (cont’d)
| BYTE OFFSET | VALUE | COMMENTS | |
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13 | (Note 9) | Cylinder skew factor (LSB) | ||
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14 | (Note 10) | Drive type field | ||
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15 | (Note 11) | Reserved | ||
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16 | (Note 11) | Reserved | ||
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NOTES: | 1. | Tracks per zone is set to $0001 if bit 11 (track = zone flag) of |
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| the attach packets attribute word (byte offset $10) is = 0. |
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| Tracks per zone is set to the number of heads (attach packet |
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| byte offset $07) if bit 11 (track = zone flag) of the attach |
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| packets attribute word (byte offset $10) is = 1. |
| 2. | Alternate sectors per zone is taken from the attach packets |
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| alternate sectors per zone field (byte offset $1E for "old" |
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| attach ($08), or offset $28 for "new" ATTACH ($78)). |
| 3. | Alternate tracks per zone field is left as the default value as |
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| returned from the mode sense command. |
