Attach/Detach Packet (all devices)
|
|
|
| be described as either |
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|
|
| a track or a cylinder, |
|
|
|
| as specified by bit 11 |
|
|
|
| of the SCSI drive |
|
|
|
| attributes (byte offset |
|
|
|
| $10). |
$1F | xxxxxxxx |
|
| Alternate cylinders |
|
|
|
| defines the number of |
|
|
|
| alternate cylinders |
|
|
|
| per disk that are to be |
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|
|
| reserved at the end of |
|
|
|
| the disk for |
|
|
|
| alternates. |
$20 | xxxxxxxx | xxxxxxxx |
| Address of |
|
|
|
| SCSI RAM area |
|
|
|
| (MSW) |
$22 | xxxxxxxx | xxxxxxxx |
| Address of |
|
|
|
| SCSI RAM area |
|
|
|
| (LSW) |
|
|
|
| This SCSI RAM work |
|
|
|
| area cannot be |
|
|
|
| deallocated or moved |
|
|
|
| except after a detach |
|
|
|
| or reset command. |
|
|
|
| The firmware uses |
|
|
|
| this |
|
|
|
| area for the SCSI CDB |
|
|
|
| and local pointers |
|
|
|
| and variables. |
NOTE: | 1. | Refer to Chapter 3. | ||
| Example for floppy: |
|
|
|
| 3½, 5¼ | 3½, 5¼, 8 | 3½, 5¼ | 3½, 5¼ |
| Norm Density | High Density | PCXT | PCAT |
| FM/MFM | FM/MFM | MFM | MFM |
7 |
