A.4 Commands
A.4.8 SET SUBWINDOW command
The following table shows the normal sequence of the SET SUBWINDOW command when used with this scanner.
Step | Bus phase | Initiator operation | ← → | Target operation |
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1 | BUS FREE | Verifies bus free |
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2 | ARBITRATION | Obtains |
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| right |
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3 | SELECTION | Selects target | → |
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| Drives BSY signal |
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4 | MESSAGE OUT | Selects logical unit | → |
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5 | COMMAND | Specifies SET | → | Sets subwindow |
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| SUBWINDOW |
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| (CDB) |
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6 | DATA OUT | Specifies subwindow | → |
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| data |
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7 | STATUS |
| ← | Reports GOOD status |
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8 | MESSAGE IN |
| ← | Reports message |
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| (Command Complete) |
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| Releases BSY signal |
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9 | BUS FREE |
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Appendix