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SUPERCEDED BY: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