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Session 32 - April 30, 2003
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AGENDA:
0 Admin
1 P6: adding a new task
2 Ch. 4.6: segmentation

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0 - ADMIN
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Due Friday
* HM 6: Questions 4.2, 4.7, 4.14, 4.17, and 4.21.

P6 due next Monday night


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1 - ADDING A NEW TASK
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Hints for adding a new task.

By the way, there is a test suite in /usr/src/test
* do a "make"
* then "./run"
* This will help warn you of any problems in your
  system. You should redo the "make" and "run" after
  you think that everything is set.

New device drivers
* To be really safe, force a recompile of everything 
  each time you change one of the global minix.h files.
* The new driver should use same message interface as
  existing drivers.

/usr/src/kernel
* Driver should be put in kernel directory
* Update "makefile"
* new entry point must be added to list contained in
  the array "task" in "table.c". Add entries in "dmp.c"

/usr/include/minix
* "const.h": NR_TASKS must be increased by 1
* New task must be given a name in "com.h"

/dev
* new special file will have to be created. 

A line has to be added to the array "dmap" in
  "fs/table.c"

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2 - CH 4.6 SEGMENTATION
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fig 4-19 p. 344
* play Robin Hood with memory?
* fig 4-20 p. 345
* shared segments
* fig 4-21 p. 347

Pure segmentation
* fig 4-22 p. 348
* notice checkerboarding + compaction


COS 421 - Lecture Notes #32		SPRING 2003	
COS421-lect-2003-04-28	Page 1	Printed 30.04.03