|
|
| Read/Write Packet |
|
|
| in SG table, if zero, |
|
|
| SG is disabled |
$12 | 00000000 | 00000000 | Reserved |
$14 | xxxxxxxx |
| Command Control |
| 0 |
| Cache ON for type 13 |
|
|
| controller only |
| 1 |
| Cache OFF for type |
|
|
| 13 controller only |
| .0 |
| Tape read forward for |
|
|
| tape devices that |
|
|
| support this |
| .1 |
| Tape read reverse for |
|
|
| tape devices that |
|
|
| support this |
| ..0 |
| Tape do not suppress |
|
|
| illegal length |
|
|
| indication for tape |
|
|
| devices that support |
|
|
| this |
| ..1 |
| Tape suppress illegal |
|
|
| length indication |
|
|
| for tape devices that |
|
|
| support this |
$15 | xxxxxxxx |
| SCSI function ($70 = |
|
|
| Read, $74 = Write) |
$16 | 00000xxx |
| Interrupt level (7 |
|
|
| through 0) |
|
|
| (0 = polled mode) |
|
|
| (Notes 3, 5) |
$17 | xxxxxxxx |
| Vector number to use |
|
|
| upon return |
|
|
| (Notes 4, 5) |
$18 | xxxxxxxx |
| Status from SCSI |
|
|
| firmware (byte 2) |
|
|
| (Note 1) |
$19 | xxxxxxxx |
| Status from SCSI |
|
|
| firmware (byte 3) |
|
|
| (Note 1) |
7 |
