7 |
SCSI PACKETS
| 3½, 5¼ | 3½, 5¼, 8 | 3½, 5¼ | 3½, 5¼ |
| 250K B/S Data | 500K B/S Data | 250K B/S Data | 500K B/S Data |
| Rate | Rate | Rate | Rate |
Step Rate | 0 | 0 | 0 | 0 |
Heads | 2 | 2 | 2 | 2 |
Precompensation | $50 (Note 1) | $50 or $4D 8 in. | $28 | $50 |
Cylinder |
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Sectors/Track | $10 | $1A | $9 | $0F |
Attribute Word | $0203 | $020B | $0281 | $028B |
Controller Type | $0F | $0F | $0F | $0F |
Drive Type | 0 | 0 | 0 | 0 |
Function Code | $78 | $78 | $78 | $78 |
Interrupt Level | $02 (Note 2) | $02 (Note 2) | $02 (Note 2) | $02 (Note 2) |
Return Vector | $4E (Note 2) | $4E (Note 2) | $4E (Note 2) | $4E (Note 2) |
Retry Count | $03 | $03 | $03 | $03 |
Physical Bytes/ | $100 | $100 | $200 | $200 |
Block |
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Pointer to Work | $10000 | $10000 | $10000 | $10000 |
| (Note 2) | (Note 2) | (Note 2) | (Note 2) |
Logical Bytes/ | $100 | $100 | $200 | $200 |
Block |
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NOTE: | 1. | Refer to drive specification. |
| 2. | Up to user. |
New Packet
Even Byte \
Odd Byte \
| FC |
| B8 | 74 |
| 30 |
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+$00 |
| Controller LUN |
| Device LUN | ||
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+$02 |
| Status Byte 0 |
| Status Byte 1 (Note 1) | ||
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