HP 8921A, Руководство программиста

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347
Chapter 6, Memory Cards/Mass Storage
DOS and LIF File System Considerations
Files that have been stored using the STORE command must be retrieved using
the LOAD command:
STORE "FM_TEST:,704,1"
LOAD "FM_TESTS:,704,1"
TESTS Subsystem DOS File Restrictions
The Test Set uses IBASIC revision 1.0. The IBASIC 1.0 file system cannot
distinguish between DOS files that have been “SAVEd” and those that were
“STOREd.” As shown in
table 37 on page 346
, SAVE and STORE both produce a
file type DOS. This can result in undesired operation when trying to run a Test
procedure from the TESTS (Main Menu) screen.
The process for running a Test Procedure is described below. The potential
problem is described in step 3.
1. The procedure file location is selected using the
Select Procedure Location:
field.
2. The desired procedure file is selected using the
Select Procedure Filename:
field. When the procedure file is selected, the Test Set loads the specified procedure file
into memory. One of the pieces of information in the procedure file is the name of the
code file used with that procedure.
3. The
Run Test
softkey is selected. When the
Run Test
softkey is selected the Test
Set attempts to load the code file into memory. If the code file is located on a DOS
formatted media the Test Set will attempt to GET the file (the Test Set assumes the file
was stored using the SAVE command). If the code file was stored to the DOS formatted
media using the STORE command an
ERROR 58 Improper file type
is
generated.
If an
ERROR 58 Improper file type
is generated the code file must be
loaded into memory and then stored back to mass storage using the SAVE
command as follows:
1. Access the TESTS (IBASIC Controller) screen and LOAD the code file into the Test
Set.
2. Delete the stored code file from the mass storage location using the IBASIC PURGE
command.
3. SAVE the program as a Code file, using a lower-case c as a prefix, to the same mass
storage location as the original code file.
The IBASIC 1.0 file system can distinguish between LIF files that have been
“SAVEd” and those that were “STOREd.” Consequently the Test Set can
determine whether to use a GET or a LOAD on a code file which is located on a
LIF formatted media.