49) REGISTER A REQUEST |
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Function: | Returns the | contents of Register A. (Display) |
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Format: | $ A |
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Explanation: | Returns detailed attributes of Register A in the following format: | |||||||||
| A | C8 | C7 | C6 | C5 | C4 | C3 | C2 | C1 | <C/R> |
| C1: | Frame number display |
| 1 = ON; | 0 = OFF | |||||
| C2: | Chapter number display |
| 1 = ON; | 0 = OFF | |||||
| C3: | User Area display |
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| 1 = ON; | 0 = OFF | ||||
| C4 to C8 are set to “0”. |
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Execution: | 7 R A <C/R> |
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| R <C/R> |
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| $ A <C/R> |
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| A 0 0 0 0 0 1 1 1 <C/R> |
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* Frame number, chapter number and User’s Display are enabled.
50) REGISTER B REQUEST | LD/CD |
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Function: | Returns the contents of Register B. (Squelch Control) |
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Format: | $ B |
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Explanation: | Returns Register B video and audio squelch attributes in the | ||||||||||
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| B | C8 | C7 | C6 | C5 | C4 | C3 | C2 | C1 | <C/R> | |
| C8: | Video squelch disabled; |
| 1 = | ON; | 0 = | OFF | ||||
| C7: | Audio squelch disabled |
| 1 = | ON; | 0 = | OFF | ||||
| C1 to C6 are set to “0”. |
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Execution: | 1 2 8 R B <C/R> |
| R <C/R> |
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| $ B <C/R> |
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| B 1 0 0 0 0 0 0 0 <C/R> |
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| * Video squelch is disabled; Audio squelch is enabled. |
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| 1 9 2 R B <C/R> |
| R <C/R> |
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| $ B <C/R> |
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| B 1 1 0 0 0 0 0 0 <C/R> |
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| * Video and audio squelch are both disabled. |
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| 0 R B <C/R> |
| R <C/R> |
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| $ B <C/R> |
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| B 0 0 0 0 0 0 0 0 <C/R> |
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* Video and audio squelch are both enabled
TP 121 v. 1.0 • 1/96 |