Specifications

System Macros Invoked by Drivers
RELSCHAN
RELSCHAN
Releases all secondary channels allocated to the driver.
Format
RELSCHAN
Description
The RELSCHAN macro calls IOC$RELSCHAN to release all secondary data
channels (for example, the MASSBUS adapter’s controller data channel) allocated
to the driver.
When the RELSCHAN macro is invoked, R5 must contain the address of the
UCB. RELSCHAN destroys the contents of R0 through R2.
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