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4 - 3 - 5.
Self Interrupts Command
At level 2, the CPU issues an auto vector level 2 inter-
rupt to itself.
AST refers to an interrupt auto vector level 1 which is
issued when a special authorization command is executed with
the CPU in user status.
The AST interrupt is issued when a
special authorization command is executed from a user program.
For both types of interrupt, a "TIME OUT" error is gener-
ated if no interrupt is generated within a fixed period of time.
diag>
intr
-v
SELF INTERRUPTS CHECK:
Level 2 ..•....••.......•.....•••..•........ OK
.lST . . • • • . . . • • • . . • . . . . . • . . . . • . . . • . . . . • . . . . • . OK
diag>
4 - 3 - 6 •
FPCP Command
The FPCP (floating-point coprocessor) test performs
floating-point calculations of the four basic arithmetic
functions and checks whether the results are correct.
Lastly, it determines and displays the coprocessor type
(MC68882)
diag> fpcp -v
FLOATING-POINT COPROCESSOR CHECK:
Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OK
Coprocessor type ...........................
MC68882
diag>
NWS-1510/1530/1580
4-9
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