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930102FG.TXT
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1993-02-02
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1 February, 1993
Issue No: TSN930102
Technical Support Note
Product(s) involve : Sound Blaster 16 Advanced Signal Processor
Third party card(s): Adaptec 154X SCSI host adaptors
Subject
Error message "DMA buffer allocation error" encountered when running in
Windows 3.1 in enhanced mode.
Description
With ASPI4DOS.SYS loaded in CONFIG.SYS file (this driver is required to
interface with CDROM connected to the adaptec SCSI host adaptor), running
Windows 3.1 in enhanced mode will result in the above error described.
Changing of hardware addresses/IRQs/DMAs on both cards does not solve the
problem. Adding of other DMA related parameters in SYSTEM.INI file does not
help either.
Solution/Action
This problem can be solved by appending a "/W" parameter at the end of the
line that contains the ASPI4DOS.SYS in the CONFIG.SYS file. The actual
command will look like the following after appending the "/W" parameter:
DEVICE=C:\ASPI4DOS.SYS /W
Remarks
"/W" actually instruct the ASPI4DOS.SYS to allocate 64Kb of XMS or base
memory to act as Virtual DMA buffer under enhanced mode.
Feedback from distributor sites and users are encouraged and welcomed.
930102FG.DOC
Technical Department, Creative Technology Ltd