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- ------------------------------------------------------------------
- WinFax PRO 3.0 Windows COMM Driver Readme Notes March 31, 1993
- ==================================================================
-
- Using updated Windows communications driver (WFXCOMM.DRV)
- ---------------------------------------------------------
- The WFXCOMM.DRV file should be copied to the Windows\System
- directory. When enabled, this driver should permit WinFax
- and all other communication programs using the same COM
- port to operate at 14,400 bps.
-
- The updated Windows communications driver is named
-
- WFXCOMM.DRV
-
- To enable this driver, edit your SYSTEM.INI file, and change
- the COMM.DRV= line as follows:
-
- comm.drv=WFXCOMM.DRV
-
- The driver tests for the presence of a 16550 UART, and will not
- enable the FIFOs if the UART is not of the correct type.
-
- Advanced settings for this driver are also available. The settings
- for both transmit and receive FIFO thresholds are adjustable via
- SYSTEM.INI entries in the [386 Enh] section.
-
- To define the number of bytes loaded into the transmit FIFO on each
- interrupt, edit:
-
- ComxTXSize=y
-
- where
-
- x is the COM port number
- y is a number between 1 and 16
-
- The default value is 8 bytes, but 16 bytes provides a reduction in
- interrupt overhead, with no change in fax transmission reliability.
- If you use a transmit FIFO setting of 1, the driver cannot stream
- at maximum throughput.
-
- To define the interrupt threshold for the receive FIFO, edit:
-
- ComxRXSize=Y
-
- where
-
- x is the COM port number
- y is one of: 1, 4, 8, or 14
-
- The default value is 14 bytes, which matches the setting in the original
- Windows 3.1 commmunications driver. Setting the receive threshold to a
- lower value increases receive reliability. A setting of 8 is recommended
- for most systems.