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