The drive kernal ROM ("ProfessionalDOS-Release-0x6000-0x7FFF.rom" and
"Professional-DOS 1541N L1 01.01.1988 - C1541 expansion EPROM 27128.rom")
has been fixed manually.

It was corrupted, because the EPROM was not read out with an EPROM burner,
but with a dumping tool from the drive memory. Simple dumping tools are
_definetly_ not sufficient to read out the contents of the drive kernal ROM
of Professional-DOS, because the hardware circuits of the expansion board
_scramble_ the data of the GCR conversion tables. Without taking into
account the internal 4-Bit register of the Professional-DOS hardware on
every access to the GCR tables, wrong contents are dumped.

In this fixed ROM archive, the GCR tables from another Professional-DOS
ROM set were used and the whole system was tested for funtionality after.

In the first archive version, there was only a C64 Kernal ROM available,
that accesses the parallel port via a special Expansion port cartridge
(known from Floppy-Flash or Romllers Turbo-Access). With this release a
C64 Kernal for Userport connected parallel cables was added. Unfortunately
this Kernal ROM is not authentic, it was customized by some unknown
individual and has been patched back as good as possible (Reset message,
colors and some stupid drive initialization).
