Using the DFI HS 3000 Plus Scanner in Enhanced Mode

• Microsoft Windows operating system versions 3.0, 3.0a, 3.1, 3.11

SYMPTOMS

When running Microsoft Windows in 386 enhanced mode in conjunction with the DFI's scanner program (SCAN.EXE) that comes with the DFI HS 3000 Plus Scanner, you may get the following error message:

   DMA buffer too small, set DmaBufferSize entry in SYSTEM.INI to XXX

CAUSE

The DmaBufferSize line may need to be added in the [386Enh] section of the SYSTEM.INI file so that the DFI scanner program can run.

RESOLUTION

To make the adjustment:

1. Switch to the directory that contains the SYSTEM.INI file.

2. Run Notepad and open SYSTEM.INI.

3. Locate the [386Enh] section.

4. Add the line

         DMABufferSize=XXX
   

   where XXX = the size stated in the error message

5. Save the new changes to the SYSTEM.INI file, exit Windows, and then restart Windows for the changes to take effect.

MORE INFORMATION

DMABufferSize specifies the amount of memory (in kilobytes) to be reserved for buffered direct memory access (DMA). This memory is allocated above 640K, if possible. Windows in 386 enhanced mode defaults to a DMA buffer size that handles disk access. The default setting size is 16. To change the value, add the line above to the [386Enh] section.

The products included here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

REFERENCES

SYSINI2.TXT