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-
-
- STAC ELECTRONICS
- TECHNICAL SUPPORT BULLETIN
-
- NUMBER: 005
- SUBJECT: STACKER-MISC
-
- DATE: May 24, 1991
- TIME: 2:57 PM
-
- SOURCE: Engineering, User's Manual
- SUPERCEDES/
- SUPERCEDED BY:
- RELEASE STATUS: Public
-
- TITLE:
- The STACKER device driver's memory requirements.
-
- OVERVIEW:
- The STACKER device driver is a resident program. It loads from the
- CONFIG.SYS file at boot-time, mounts the compressed STACKER volumes, then
- shrinks down and remains in RAM until powered off.
-
- Starting sizes in bytes, without STACKER cache (/M=0)
-
- Coprocessor Software
- Version Version
-
- 1st volume (with 4KB clusters):21,504 30,720
- (with 8KB clusters):25,600 38,912
- add'l volumes: 3,072 each 3,072 each
-
- When STACKER loads at boot time, the size of the driver (both initial and
- resident) is displayed.
-
- ISSUES/COMMENTS:
- 1) The amount of memory used by STACKER may prevent the launching of
- programs which ran properly before STACKER was installed. "Insufficient
- memory" messages may result.
-
- 2) When loading both the driver and the STACKER cache into high memory,
- there may not be a sufficiently large contiguous block of memory. This
- may result in an error message from the memory manager and failure to
- load the driver high.
-
- 3) In the coprocessor version, 9 Kbytes are allocated for internal
- buffers by default.
-
- RECOMMENDED ACTIONS:
- 1) If the STACKER cache has been specified, try lowering the /M=xx switch
- in the "DEVICE=C:\STACKER\STACKER.COM..." line for a smaller cache (see
- User's Manual, "STACKER Utilites/Commands"). If errors persist even with
- the driver as small as possible, use a memory manager to load the STACKER
- driver (and cache, if present) into high memory.
-
- 2) Lower the size of the STACKER cache, as in (1), until the driver fits
- into high memory. Most memory managers include a utility for optimizing
- the organization of device drivers; optimizing high memory may allow the
- STACKER driver and cache to fit better.
-
- 3) To free up the 9 Kbytes of internal buffers, insert an /M=0 switch to
- the STACKER device driver line in CONFIG.SYS, as in (1).