3-18
Performer-HD Instruction Manual
Section 3 — Operation and Maintenance
SMPTE information fields implemented by Performer-HD are listed in
SMPTE Message Processing
Message processing uses a buffer that can contain up to 200 bytes to hold
outgoing messages. All messages waiting to be sent are concatenated to-
gether into a single message block not surrounded by a Block command
(see below), which is placed in the message buffer and sent at the next mes-
sage send time. The controlling machine must therefore be careful not to re-
quest too much information at one time, lest it overflow the buffer. If this
buffer does overflow before the bus controller polls and responds to the
router service request to send the data, the entire buffer contents are cleared
and replaced with a system service error (
SERR
) message indicating buffer
overflow.
Table 3-10. SMPTE Information Fields Implemented by Performer-HD
Byte
Full Name
Type/Value
21
Virtual Machine Type
Common, 8-bit unsigned = 05
22
Equipment Type
Common, Byte Count/ASCII chars: Performer-HD\r07XXXX-00 VERS 1.0
27
Virtual Machine Status
Common, 8-bit unsigned=02 (available)
41
Matrix Pointer
Type-Specific, 1 byte, 00 or FF: 00=this Performer matrix; FF=all matrices
42
Level Pointer
Type-Specific, 1 byte, 00-02 or FF:
00=video
01=audio 1
02=audio 2
FF=all levels
43
Source Pointer
Type-Specific, 2 bytes,0000-0009 or FFFF:
0000-0009=source
FFFF=all sources
44
Destination Pointer
Type-Specific, 2 bytes, 0000 or FFFF
0000=this Performers destination
FFFF=all destinations
46
Destinations to Source
Type-Specific, 4 or 5 bytes: matrix, level, source, 0/1:
0=no connection
1=next 2 bytes give destination (0000)
47
Sources to Destination
Type-Specific, 4 or 5 bytes: matrix, level, destination, 0/1:
0=no connection
1=next 2 bytes give source (0000-0009)
4A
Level Configuration
Type-Specific, 11 bytes:
matrix=00
level=00-02
min source=0000
max source=0009
min dest=0000
max dest=0000
nonexistent block count=00
Содержание PERFORMER-HD
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Страница 8: ...viii Performer HD Instruction Manual Preface ...
Страница 32: ...2 14 Performer HD Instruction Manual Section 2 Installation ...
Страница 54: ...3 22 Performer HD Instruction Manual Section 3 Operation and Maintenance ...
Страница 58: ...Glossary 4 Performer HD Instruction Manual VCO Voltage Control Oscillator ...
Страница 60: ...Index 2 Performer HD Instruction Manual ...