R0STUB.SYS

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Product Support
OS/2 1.3
OS/2 2.0
OS/2 2.1 S
OS/2 2.11 SMP S
OS/2 Warp 3 S
OS/2 Warp Connect S
OS/2 Warp 4 S
OS/2 Warp Server for e-Business S

R0STUB.SYS is the ring-0 half of the sync-stream-manager (SSM) that allows MMPM/2 to synchronize audio and video. Allows AUDIOSH.DLL to talk to audio drivers via IDC entry point. In the beginning, all the streaming took place at ring-0. Later (Warp 3?), the audio streaming was moved to ring-3. The API still had to be maintained to audio driver. R0STUB is small piece of code that takes FIFOs buffers to/from MMPM/2 ring-3 audio stream handler and delivers them from/to the hardware vendor audio device driver.

Version

Date Version Size Comments
2001-07-26 14.075 7,252 bytes

CONFIG.SYS

DEVICE=\MMOS2\R0STUB.SYS