Experimental Physics and
Industrial Control System

[email protected] (Kevin Tsubota) · Tue, 18 May 1999 16:25:44 -1000

Hello PowerPC VME Users,

I'm in the process of uprading our 68k based VME system to
PowerPCs.  In particular MVME230x boards.

We're running EPICS R3.13.0Beta12.

Has any one seen this before? And if so what have you done
to fix it? Once this happens my only option is to reboot.

*********

-> dbpr "ktt:test:trig"   
ASG:                DESC: analog input record               DISA: 0             
DISP: 0             DISV: 1             NAME: ktt:test:trig RVAL: 0             
SEVR: INVALID       STAT: UDF           SVAL: 0             TPRO: 0             
VAL: 0              
value = 0 = 0x0
-> 
-> dbpr "ktt:test:trig",1

Floating point invalid operation for interger convert
Exception current instruction address: 0x03b0f7d4
Machine Status Register: 0x0010b130
Condition Register: 0x48400040
Fp Control and Status Register: 0xe00041d0

1608e0 vxTaskEntry    +60 : shell ()
13c2e4 shell          +18c: 13c310 ()
13c518 shell          +3c0: execute ()
13c698 execute        +d8 : yyparse ()
17cd84 yyparse        +7a8: 17ace8 ()
17ae60 yystart        +8f8: dbpr ()
3b339ac dbpr           +94 : 3b35de0 ()
3b35fb8 dbhcr          +1018: dbGetString (

**********

I have another ai record that is of DTYP=Soft Channel which
print without a problem.  This record is of DTYP=Bancomm 635.

I'm already disabling floating point underflows. 

Is it the general consensus to just disable floating point
exceptions as a whole?  Has anyone been looking into actually
getting to the root of these problems?  Or is it just me?

Thank you.
Kevin Tsubota
[email protected]

California Assoc. for Research in Astronomy
(808)885-7887

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System