Fast_Ser by Franz Sirl is a low level serial port driver that
provides optomized high speed serial routines AND also provides a way
for you to set the SCC driven serial ports to 38400 and 57600.
Includes a replacement Modem cpx module and a text file describing a
bug in the Mega STe gals that prevents the SCC ports from working
properly. The program and all documentation is in German.