User Tip #110: Increase serial port performance with larger FIFO

Hits: Failed to execute CGI : Win32 Error Code = 3

To increase serial port performance, increase the fifo buffer size from NT defaults which are receive buffer = 8 bytes and transfer buffer = 1 byte. Cut and paste the following Windows NT registry code into fifo.reg file and run it.

REGEDIT4
BLANK LINE GOES HERE
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Serial]
"RxFIFO"=dword:00000010
"TxFIFO"=dword:00000010
 BLANK LINE GOES HERE

This script sets the buffers to 16 bytes which is Win98s default.

See .REG files for background information on .REG files.



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