Set clock prescale based on BIOS supplied value instead of trying to calculate an optimum value from (constant) parameters. This should set the SCNTL3 register of the 53c860 and 53c875 to twice the divider it used to be, since cards based on those chips seem to use an 80MHz clock instead of the Clock Doubler feature and a 40MHz clock.
Set clock prescale based on BIOS supplied value instead of trying to
calculate an optimum value from (constant) parameters.
This should set the SCNTL3 register of the 53c860 and 53c875 to twice
the divider it used to be, since cards based on those chips seem to use
an 80MHz clock instead of the Clock Doubler feature and a 40MHz clock.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase