 |
» |
|
|
|
CM callable only. Switches the DB register pointer.
Privileged mode (PM) capability is required. Syntax | |
U16 O-P U16V
logindex:=SWITCHDB(index)
|
Functional Return | |
- logindex
16-bit unsigned integer (assigned functional return) Returns the logical index of the data segment indicated by the previous
DB register setting, allowing this setting to be restored later.
If the previous DB setting indicated the stack, a zero is returned.
Parameters | |
- index
16-bit unsigned integer by value (required) Passes the logical index of the data segment where the DB register is to
be switched (obtained through the GETDSEG intrinsic). The value
specified is checked to ensure that the process has acquired access to the
segment previously. For an extra data segment, a positive, nonzero
integer must be specified. To switch to the stack segment, a zero
must be specified.
Condition Codes | |
- CCE (2)
Request granted. - CCG (0)
Not returned. - CCL (1)
Request denied. An illegal data segment was specified.
Related Information | |
- Intrinsics
GETDSEG - Commands
None - Manuals
Introduction to MPE XL for MPE V Programmers (30367-90005)
|
