Ullrich von Bassewitz wrote:

> replacement kernal routines (call kernal routines from any bank),

On a related note, as I posted to the uIEC mailing list and on the
C128/PET Alive web forum but not yet on this list:

Last Friday I assembled a cassette to IEC port adaptor for the CBM 610,
a project Ullrich uploaded to Funet/Zimmers FTP back in 1998. It comes
with a custom Kernel and source code.

http://www.cbm.sfks.se/pics/610-iec-adapter1.jpg
http://www.cbm.sfks.se/pics/610-iec-adapter2.jpg

I and Steve Gray have toyed with the idea to extract the IEC driver code
to make a cartridge instead of replacing the kernel. Since I have a small
surplus of CBM 610 cartridges fitted with dual 2764 EPROM sockets, it
should be possible to manufacture a few for people who like this feature
to connect a 1541 compatible floppy drive to their CBM 610/710.

Now when you mention this club magazine has an article how to replace
the kernel routines, I suppose it may come handy. Before looking at the
article in question, would it allow soft override so one could load the
new kernel routines from e.g. IEEE floppy or a cartridge and at some
point swap back to the original kernel? Would it be possible to just
redirect some device handling routines, possibly even have both IEC and
IEEE access simultaneously? I realize strange things may happen if you
have two drives on different interfaces, both listening to device #8.

Besides my knowledge of German is non-existing but I'd rely on automatic
translation services to get a rough understanding of the articles. One
may get some funny results but most of the time it'll probably be fine.

Best regards

-- 
Anders Carlsson

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