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Different ROM image files and utilities of the Floppy-Speeder system Professional-DOS

Tool disks and ROM sets Headerless binary
format (PC based) 		Commodore format
(with load address)
D64 image file containing several versions of different copy tools for Professional-DOS n.a. Tools (20KB)
Professional-DOS N/L1 ROM set, Expansion port version, 1541-ROM version string: DOS1541N L101.01.881+2MHZ
Note: *1 		N/L1 ROMs (26KB) N/L1 Kernals (23KB)
Professional-DOS N/L1 ROM set, Expansion port and Userport versions, 1541-ROM version string: DOS1541N L101.01.881+2MHZ
Note: *2 		N/L1 E+U ROMs (34KB) N/L1 E+U Kernals (21KB)
Professional-DOS N/L1 Kernal (© 1987) for the C128D (Expansionport version, kernal only, no floppy ROMs) C128D ROM (25KB) C128D Kernal (26KB)

Kernal and floppy ROM (whole memory map) dump utilities n.a. not available yet

Notes:
  1. The drive kernal ROM is corrupted, it seems that 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, because the hardware circuit of the expansion board »scrambles« 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.

  2. This archive contains ROMs with fixed and tested GCR tables. A C64 Kernal ROM for parallel cables connected to the Userport has been added. In contrast to the Expansionport-Kernal, the Userport-Kernal is not authentic, it has been added from third sources. It was customized by some individual before and therefore was reworked, so that it looks like an original as good as possible.

 
Wolfgang Moser, 2003-05-25,  ,  ("contact me" form disabled due to too high demand, sorry)