
28
Data Device Corporation
www.ddc-web.com
BU-6174X/6184X/6186X
F-10/02-300
FIGURE 10. RT (and MONITOR) INTERRUPT STATUS QUEUE
(shown for message Interrupt event)
INTERRUPT
VECTOR
DATA WORD
BLOCK
DESCRIPTOR
STACK
PARAMETER
(POINTER)
INTERRUPT STATUS QUEUE
(64 Locations)
INTERRUPT VECTOR
QUEUE POINTER
REGISTER (IF)
BLOCK STATUS WORD
TIME TAG
DATA BLOCK POINTER
RECEIVED COMMAND
NEXT
VECTOR
FIGURE 9. 50% and 100% ROLLOVER INTERRUPTS
DATA POINTER
CIRCULAR
BUFFER*
(128,256,...8192 WORDS)
LOOK-UP TABLE
RECEIVED
(TRANSMITTED)
MESSAGE DATA
BLOCK STATUS WORD
TIME TAG WORD
DATA BLOCK POINTER
RECEIVED COMMAND WORD
DESCRIPTOR STACK
50%
ROLLOVER
INTERRUPT
50%
The example shown is for an RT Subaddress Circular Buffer.
The 50% and 100% Rollover Interrupts are also applicable to
the RT Global Circulat Buffer, RT Command Stack,
Monitor Command Stack, and Monitor Data Stack.
Note
100%
ROLLOVER
INTERRUPT
100%