Meinberg VME31 - Manual (Page 10)

10
Using Periodic Interrupts
If the clock shall generate periodic interrupts, three bytes must be written to the dual
port RAM:
Interrupt Vector
After power up, this byte is set to 0Fh. The user must take care to set up the vector
number corresponding to the system's exception vector assignments.
Interrupt Level
This byte is set to 00h after power up. The user must supply the desired interrupt level
(01h..07h).
Interrupt Rate
The contents of this byte reflects the rate of interrupts generated by the board. After
power up, its value is 00h. Valid codes are given below:
00h no interrupt
01h once ever 10 milliseconds
02h once every 100 milliseconds
03h once every second
04h on every 10 seconds
05h once every minute
06h once every 10 minutes
07h once every hours
others: (reserved)