Re: Please help: FCOPY PC 1.0 by TWA ? Weird version ?

From: Raymond C. Bryan (
Date: 2005-07-24 21:47:05

>>  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?

I seem to recall someone writing about in-out hardware hacks in 
Commodore/powerplay magazines.  May have been a whole book of 
hardware hacks that included some of those.
|Raymond C. Bryan  651-642-9890 vox      | The battle is sometimes |
|Raymond Computer  651-642-9891 fax      | to the small for 
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