HP Data Entry and Forms Management System (VPLUS) Reference Manual (32209-90024)

Appendix J 625
HP PRECISION ARCHITECTURE
MIGRATION ISSUES
switch stubs, which require the correct parameter types. The wrong parameter causes a
run-time error because the VPLUS native mode access layer does not have the capacity to
edit the data passed through it.
If your application fails with a VPLUS error 998 or 999, or a memory fault, you can take
the following steps:
1. Activate the VPLUS trace facility and examine the trace, especially the entering and
leaving messages from the VPLUS native mode stub software.
2. Check the parameter content messages of the last VPLUS intrinsic call before the
program failed.
3. Examine and correct VPLUS parameter declarations as needed, both in native mode
code and in compatibility mode code if this is a migrated application.
Supported Peripherals and Applications
The following are currently supported on MPE/XL.
Printers-HPIB 2565, 2566, 2680, 2688
Terminals 2392, 2393, 2394, 2397,
2622, 2624B, 2627,
HP 150, Vectra, Port+
Native Mode COBOL II/XL, FORTRAN 77/XL
Languages HP Pascal/XL
Compatibility Mode SPL/V RPG/V, Business BASIC/V,
Languages Transact/V