GDSX (Extended General Device Support) Manual

Design and Development

Extended General Device Support (GDSX) Manual—529931-001

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BACKUPCPU

This static parameter is used to specify a backup processer when a GDSX application

is run in NonStop mode. You must specify a backup processor that is different from

the primary processor.

When a GDSX application designed for NonStop mode is configured to run as a

TS/MP server, you do not use the BACKUPCPU configuration parameter to specify a

backup processor. For this case, the specification of the primary and backup

processors is always assigned by TS/MP. However, you must use the NONSTOP and

SERVER configuration parameters to notify the GDSX server to start a backup process

in the processor specified by TS/MP.

BREAKENABLED

This dynamic parameter determines whether user tasks can take break ownership by

means of TAKEBREAK.

If this BREAKENABLED is set to 1, user tasks can successfully call the TAKEBREAK

procedure, otherwise calls to TAKEBREAK return file error 99. See Section 8, Service

Routines for a description of GIVEBREAK and TAKEBREAK.

BUFFERTIMEOUT

This dynamic parameter specifies the maximum time that TSCODE should wait for a

buffer to become available during a call to GETLOCALPOOL that does not specify a

timeout. (See GETLOCALPOOL on page 8-36.) If a task waits longer than

BUFFERTIMEOUT ticks, it is suspended with a fault.

CONTROLFLAGS

This dynamic parameter is used to set multiple configuration controls. It is a bit-

encoded parameter, but bit 12 (d^plus^enabled) cannot be changed after GDSX is

started.

Internal DEFINE Name CONFIG^PARAMS Name Default Value Range

brother^cpu^no N.A. -1 0–15

Internal DEFINE Name CONFIG^PARAMS Name Default Value Range

breakenabled breakenabled^term 1 (ON) 0–1

Internal DEFINE Name CONFIG^PARAMS Name Default Value Range

buffertimeout buffer^timeout 1,000 ticks 0–65,535 ticks

Internal DEFINE Name CONFIG^PARAMS Name Default Value Range

controlflags control^flags 2 N.A.

dmap^flag control^flags.<0> 0 (OFF) 0–1

d^plus^enabled control^flags.<12> 0 (OFF) 0–1