3.5 Command Formats
Level III commands on the
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Command Mnemonic Ñ Each Level III command is expressed as two ASCII alphabetic characters, representing the command mnemonic. There is no distinction between uppercase letters and lowercase letters. Example: PL (Play); Pl (Play); pl (Play).
Argument ÑAn argument is expressed in ASCII digits and it is placed before the command. When a command requiring an argument has no argument, an error
(E06) is returned. An argument consists of either an address or an integer:
1)An Address Ñ The address can be a frame, time, or chapter number (LDs) or time, block, track or index number (CDs) depending how the address flag is set. When an address larger than the maximum allowable value is input, correct evaluation cannot be made. Addresses may be expressed as numbers indicated below:
LDs | Frame number | CAV: |
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| xxxxx | N1 | N2 | N3 | N4 | N5 |
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| minimum = 0 0 0 0 0 » maximum = 65535 |
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| Chapter number | CAV, CLV |
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| xx | N1 | N2 |
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| minimum = 00 » maximum = 79 |
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| Time numbers | CLV: |
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| H:MM:SS | N1 | N2 | N3 | N4 | N5 |
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| (N1=hour, N2 N3=minutes, N4 N5=seconds) |
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| minimum = 00000 » maximum = 95959 |
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| Extended Time numbers | CLV: |
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| H:MM:SS.FF | N1 | N2 | N3 | N4 | N5 N6 | N7 |
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| (N1=hour, N2 N3=minutes, N4 N5=seconds, N6 N7 Frame No.) |
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| minimum = 00000 » maximum = 9595929 |
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CDs | Time | CD |
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N1 N2 N3 N4 | N1 | N2 | N3 | N4 |
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| MM:SS | N1 N2=minutes, N3 N4=seconds, N5=blocks |
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| Block numbers |
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| N1 N2 N3 N4 N5 N6 | N1 | N2 | N3 | N4 N5 N6 |
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| MM:SS:BB | Minutes |
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| minimum = 00000 » maximum = 995974 |
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| Track numbers | CD |
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| xx | N1 | N2 |
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| minimum = 01 » maximum = 99 |
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| Index numbers | CD |
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| N1 | N2 | N3 N4 |
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| N1 | N2 = Track , N3 N4= Index |
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Track =
Figure