From: Jim Brain (brain_at_jbrain.com)
Date: 2005-07-24 20:42:12
Antitrack@networld.at wrote:
>a) "Fcopy PC 1.0 by TWA"
>Someone obviously made a link to the PC and added this into FCOPY functionality,
>but the link must be very weird. I disassembled the code and it would toggle and
>wiggle a lot of $dc00/$dc01 registers; the code is at $4000-4200.
>This means someone obviously constructed a very weird PC-to-c64-Joystickport
>connector. Whilst it is clear that this would be able to transfer data from PC
>to the 64, it is beyond my imagination how this hardware would ever allow one to
>transfer data from the 64 to the PC, since the joyports are, naturally,
>readonly.
>
Naturally, they are not. They are read write ports. I think the cable
does nybble copying to the PC parallel port, which is also read/write on
most newer parallel port implementations.
To all: I've heard this myth of joyports being read-only often. Is it
because the joysticks are read-only?
Jim
--
Jim Brain, Brain Innovations
brain@jbrain.com http://www.jbrain.com
Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times!
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