DDC NHi-15504 Manuel d'instructions - Page 12

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6.0
NHi-15504PCI MEMORY STRUCTURE
REMOTE TERMINAL MEMORY ORGANIZATION
The T/R bit subaddress and word count fields in the Command word are used to index into a message
Pointer table as defined below:
Message Pointer
Table Address
16 Bits
(Register
MESSAGE POINTER TABLE INDEX
Index
0
1 - 30
31
32
33 - 62
63
64 - 95
96
97 - 126
127
Note : Broadcast messages may be separate or combined with Receive.
Message Pointer
Table(16Bit Ptrs)
Pointer 0
Pointer 1
Up To 63 Pointers
Per Message
Pointer 127
T/R
Subaddress
Not Used
0
1 - 30
0
31 (Note 2)
Not Used
1
1 - 30
1
31 (Note 2)
X
0,31 (Note 2)
Not Used
0
1 - 30
0
31 (Note 2)
Subaddress Data Table
Pointers(16Bit Ptrs)
Receive Subaddress 1
Table Control Word
Pointer To Data Table 1
Pointer To Data Table 63
Mode Code
0 - 31
12
Command
Receive/Bcst
Receive/Bcst
Transmit
Transmit
Mode Code
Broadcast
Broadcast