[daip] missing TDD file???

[Eric Greisen]

Bob Becker writes:
 > hi, i am running 15APR98 and get the following message when i try to run a homemade task
 > 
 > AIPS 1: Found in Version=FIRST
 > MKBOX1: ZOPEN: FILE DA00:TDD000000;          NOT FOUND
 > MKBOX1: AV2INP: ERROR  2 OBTAINING INPUT PARAMETERS
 > MKBOX1: ZOPEN: FILE DA02:CAD000000.001;      NOT FOUND
 > MKBOX1: ZOPEN: FILE DA03:CAD000000.001;      NOT FOUND
 > MKBOX1: ZOPEN: FILE DA05:CAD000000.001;      NOT FOUND
 > MKBOX1: ZOPEN: FILE DA06:CAD000000.001;      NOT FOUND
 > MKBOX1: ZOPEN: FILE DA07:CAD000000.001;      NOT FOUND
 > MKBOX1: ZOPEN: FILE DA08:CAD000000.001;      NOT FOUND
 > MKBOX1: ZOPEN: FILE DA09:CAD000000.001;      NOT FOUND
 > MKBOX1: ZOPEN: FILE DA0A:CAD000000.001;      NOT FOUND
 > MKBOX1: ERROR  5 FINDING
 > MKBOX1: IMGATT: ERROR WITH IMAGE Input object
 > MKBOX1: Purports to die of UNNATURAL causes
 > MKBOX1: ZOPEN: FILE DA00:TDD000000;          NOT FOUND
 > MKBOX1: FAILS TO SEND RETURN CODE TO POPS  1 IO ERROR    2
 > 
 > this program was working fine up until today. any advice?
 > 
This is curious.  The TDD file is used to pass parameters from AIPS to
tasks and back.  AIPS would not have started MKBOX if the file was
actually missing.  My first thought was that the logical DA00 must
have gotten lost.  But every aips task must begin with a call to
  CALL ZDCHIN (.TRUE.)
which would also access DA00:SPD.. and that call is provided by
AV2INP.  Are the CA files actually missing at the moment (it looks as
if 1 and 4 are there)?  I was wondering about loss of all logicals
somehow but that makes little to no sense.

$DA00 is normally $AIPS_ROOT/DA00/<HOSTNAME>/

ERic