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SETBLK.2.adoc

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SETBLK(2) Manual Page

NAME

SETBLK - set a memory block in the current task's memory mapping

SYNOPSIS

Input

  • YR - index in task’s memory mapping table

  • AC - new value for entry in mapping table

Call

jsr ENMEM

Output

  • C=1 - invalid index in mapping table

  • C=0 - success

Note
 this call changes all registers

DESCRIPTION

In the CS/A architecture each environment has a mapping table that determines the mapping of the environment’s 64k address space into the 1M physical address space using 16 entries, one for each 4k block. This mapping is loaded at any time the system switches to a new environment.

Using SETBLK the task can change its own memory mapping.

RETURN CODES

SEE ALSO

AUTHOR

Written by André Fachat.

REPORTING BUGS