APM NH.SYS
Replacement APM driver (APM_NH.SYS) APM_NH.SYS is based on 10.037 level of IBM's APM.SYS (same as XR_D002 but probably outdated with respect to OS/2 v 4.52 G.A.). Its purpose is to honor the APM hooks installed by VIAAPM.SYS while allowing usual APM tasks such as power-down or suspend mode. It is therefore essential that one installs APM_NH.SYS rather than APM.SYS, so the KT266A idle hook would not be taken out by IBM's driver.
DEVICE=APM_NH.SYS
Tip: In System which only have ACPI it is reported that APM-NH.SYS works even it is a Intel chipset.
| OS/2 2.x | OS/2 3.0 | OS/2 4.0 | OS/2 4.5x |
|---|---|---|---|
| No | Yes | Yes | Yes |