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 Post subject: Commodore 1541 demo
PostPosted: Tue Jul 06, 2021 6:26 am 
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Hi!
I’m not sure if posting this kind of thing here is okay, or whether this was already posted, but this guy built a demo that runs 100% on the commodore 1541 disk drive : http://www.quiss.org/freespin/

I wonder how one acquires the skill set to pull off that sort of thing...

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 Post subject: Re: Commodore 1541 demo
PostPosted: Tue Jul 06, 2021 3:17 pm 
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jfoucher wrote:
I wonder how one acquires the skill set to pull off that sort of thing...

I think possessing the potential ability to acquire that skill set might be pre-determined before birth. :)

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 Post subject: Re: Commodore 1541 demo
PostPosted: Tue Jul 06, 2021 5:09 pm 
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That is a pretty interesting project. Granted, it's a chunk of 6502 code and a fair amount of data stored on the diskette. Cool idea using the clock output for sync and the data output for luminous levels.

However, I just can't see why anyone would chop up a pair of cables with a knife :shock: .... it would be more useful to simply make an adapter with a couple connectors, some wire and the 100-ohm resistor :roll:

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 Post subject: Re: Commodore 1541 demo
PostPosted: Tue Jul 06, 2021 7:15 pm 
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floobydust wrote:
However, I just can't see why anyone would chop up a pair of cables with a knife :shock: .... it would be more useful to simply make an adapter with a couple connectors, some wire and the 100-ohm resistor :roll:


I see it as more of a humorous flourish than a serious suggestion. If you want practical, you're not going to be generating video on a floppy drive in the first place.

Adding extra components, even if they're just connectors, goes against the purity of a demo that runs on unmodified hardware. Yes, cutting the cable is technically a modification, and suggesting that the resistor be taken from the C64 is just cheeky. But this way he can at least acknowledge the rules (while bending them past their limit).


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 Post subject: Re: Commodore 1541 demo
PostPosted: Wed Jul 07, 2021 7:02 pm 
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The reason for the brutal cutting of the cord: once you get a taste of coding directly on the 1541, you'll never go back.

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 Post subject: Re: Commodore 1541 demo
PostPosted: Sat Aug 07, 2021 1:04 pm 
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That was really neat. Thanks for posting.


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