What does this dragon mod do?

Hardware Hacking, Programming and Game Solutions/Cheats
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jedie
Posts: 655
Joined: Wed Aug 14, 2013 12:23 pm
Location: germany
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What does this dragon mod do?

Post by jedie »

I have a Dragon 64 here, buyed on ebay... Now i see there is a mod.

There is a condenser connected parallel to the "quartz crystal" XL2. See picture on the right side.

What does it do? Change the frequency pulse?
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... too many ideas and too little time ... Related stuff written in Python:
Dragon 32 emulator / PyDC - Python Dragon 32 converter: https://github.com/jedie/DragonPy
DWLOAD server / Dragon-Lib and other stuff: https://github.com/6809
sorchard
Posts: 530
Joined: Sat Jun 07, 2014 9:43 pm
Location: Norwich UK

Re: What does this dragon mod do?

Post by sorchard »

That looks like the mod that switches the display to monochrome for a sharper picture. 'Shorting' the crystal with a capacitor removes the colour sub carrier from the PAL signal.

That said, I've always had the impression that the D64 display was a lot cleaner than the D32. Maybe some still had an annoying amount of 'dot crawl'?
Stew
jedie
Posts: 655
Joined: Wed Aug 14, 2013 12:23 pm
Location: germany
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Re: What does this dragon mod do?

Post by jedie »

Yes you are right. I connected the dragon and test it. It switched to greyscale and it's clearer.

I didn't not see any significant difference between 32 and 64 screen output.
... too many ideas and too little time ... Related stuff written in Python:
Dragon 32 emulator / PyDC - Python Dragon 32 converter: https://github.com/jedie/DragonPy
DWLOAD server / Dragon-Lib and other stuff: https://github.com/6809
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